CARDIAC PATHWAYS CORP
S-8, 1998-12-17
ELECTROMEDICAL & ELECTROTHERAPEUTIC APPARATUS
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<PAGE>   1
   AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON DECEMBER 17, 1998
                                                     REGISTRATION NO. 333-
===============================================================================



                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549


                      ------------------------------------

                                    FORM S-8
                             REGISTRATION STATEMENT
                                      UNDER
                           THE SECURITIES ACT OF 1933

                      ------------------------------------


                          CARDIAC PATHWAYS CORPORATION
             (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)

                      ------------------------------------


         DELAWARE                                    77-0278793
- ------------------------               -----------------------------------
 (STATE OF INCORPORATION               (I.R.S. EMPLOYER IDENTIFICATION NO.)

                               995 BENECIA AVENUE
                           SUNNYVALE, CALIFORNIA 94086
   (ADDRESS, INCLUDING ZIP CODE, OF REGISTRANT'S PRINCIPAL EXECUTIVE OFFICES)

                      ------------------------------------


                       1998 NONSTATUTORY STOCK OPTION PLAN
                        1998 EMPLOYEE STOCK PURCHASE PLAN
                            1996 DIRECTOR OPTION PLAN
                                 1991 STOCK PLAN
                            (FULL TITLE OF THE PLAN)

                      ------------------------------------


                               WILLIAM N. STARLING
                      PRESIDENT AND CHIEF EXECUTIVE OFFICER
                          CARDIAC PATHWAYS CORPORATION
                               995 BENECIA AVENUE
                           SUNNYVALE, CALIFORNIA 94086
                                 (408) 737-0505
(NAME, ADDRESS, AND TELEPHONE NUMBER, INCLUDING AREA CODE, OF AGENT FOR SERVICE)

                      ------------------------------------


                                   COPIES TO:
                             CHRIS F. FENNELL, ESQ.
                        WILSON SONSINI GOODRICH & ROSATI
                            PROFESSIONAL CORPORATION
                               650 PAGE MILL ROAD
                               PALO ALTO, CA 94304
                                 (650) 493-9300
                      ------------------------------------

<PAGE>   2
                         CALCULATION OF REGISTRATION FEE
<TABLE>
<CAPTION>
                                                                           Proposed           Proposed
                                                                            Maximum           Maximum           Amount of
                 Title of Each Class of             Amount to be          Offering Price      Aggregate        Registration
               Securities to be Registered          Registered              Per Share       Offering Price        Fee
- ---------------------------------------------------------------------------------------------------------------------------
<S>                                            <C>                         <C>              <C>                <C>                
Common Stock, $0.001 par value (1)..........     720,000 shares (2)        $ 4.625(3)        $3,330,000        $  926.00
Common Stock, $0.001 par value (1)..........   1,900,000 shares (4)        $ 3.931(5)        $7,469,375        $2,077.00
===========================================================================================================================
TOTAL                                                                                                          $3,003.00
===========================================================================================================================
</TABLE>
(1)     Includes Preferred Share Purchase Rights which, prior to the occurrence
        of certain events, will not be exercisable or evidenced separately from
        the Common Stock.

(2)     This subtotal represents the number of shares being registered pursuant
        to this Registration Statement which are issuable upon exercise of
        options that have not yet been granted under the 1998 Nonstatutory Stock
        Option Plan, the 1996 Director Option Plan and the 1991 Stock Plan as of
        the date of this Registration Statement. Of the total of 720,000 shares
        that will be issuable upon the exercise of such options to be granted in
        the future, 400,000 shares will be issuable upon exercise of options to
        be granted in the future under the 1998 Nonstatutory Stock Option Plan,
        20,000 shares will be issuable upon exercise of options to be granted in
        the future under the 1996 Director Option Plan and 300,000 shares will
        be issuable upon exercise of options to be granted in the future under
        the 1991 Stock Plan.

(3)     Estimated in accordance with Rule 457(h) solely for the purpose of
        computing the amount of the registration fee. Computation based upon the
        average of the high and low prices for the Common Stock as reported by
        The Nasdaq National Market on December 15, 1998.

(4)     This subtotal represents the number of shares being registered pursuant
        to this Registration Statement which are the maximum number of shares 
        authorized to be issued under the 1998 Employee Stock Purchase Plan.

(5)     Estimated in accordance with Rule 457(h) under the Securities Act of
        1933 solely for the purpose of calculating the total registration fee.
        Computation based upon 85% (see explanation in following sentence) of
        the average of the high and low prices of the Common Stock as reported
        by The Nasdaq National Market on December 15, 1998. Pursuant to the 1998
        Employee Stock Purchase Plan, which plan is incorporated by reference
        herein, the purchase price of a share of Common Stock shall be an amount
        equal to 85% of the Fair Market Value of a share of Common Stock on the
        Enrollment Date or the Exercise Date (as defined in such Plan),
        whichever is lower.


<PAGE>   3

                          CARDIAC PATHWAYS CORPORATION
                       REGISTRATION STATEMENT ON FORM S-8
                                        
                                    PART II
                                        
                 INFORMATION REQUIRED IN REGISTRATION STATEMENT


ITEM 3.   INCORPORATION OF DOCUMENTS BY REFERENCE.

     There are hereby incorporated by reference in this Registration Statement
the following documents and information heretofore filed with the Securities and
Exchange Commission:

     (1)  The Registrant's Annual Report on Form 10-K for the year ended June
30, 1998 filed pursuant to Section 13 of the Securities Exchange Act of 1934, as
amended (the "Exchange Act"), on September 25, 1998.

     (2)  The Registrant's Quarterly Report on Form 10-Q for the quarter ended
September 30, 1998 filed pursuant to Section 13 of the Exchange Act on November
6, 1998.

     (3)  The Registrant's Proxy Statement dated October 28, 1998 relating to
the Registrant's 1998 Annual Meeting of Stockholders.

     (4)  The description of the Common Stock of the Company that is contained
in the Registration Statement on Form 8-A filed April 27, 1996 pursuant to
Section 12(g) of the Exchange Act and declared effective on June 12, 1996.

     (5)  The description of the Registrant's Preferred Share Purchase Rights
contained in the Registrant's Registration Statement on Form 8-A filed May 15,
1997 pursuant to Section 12(g) of the Exchange Act.

     (6)  With respect to the 1991 Stock Option Plan and the 1996 Director
Option Plan, the contents of the Registration Statements (Reg. Nos. 333-07629
and 333-38049) as filed with the Commission on July 3, 1996 and October 16,
1997, respectively.

     (7)  All documents filed by the registrant pursuant to Sections 13(a),
13(c), 14 and 15(d) of the Exchange Act on or after the date of this
Registration Statement and prior to the filing of a post-effective amendment
which indicates that all securities offered have been sold or which deregisters
all securities then remaining unsold shall be deemed to be incorporated by
reference in this Registration Statement and to be part hereof from the date of
filing of such documents.

ITEM 4.   DESCRIPTION OF SECURITIES.

     Not applicable.

ITEM 5.   INTERESTS OF NAMED EXPERTS AND COUNSEL.

     Not applicable.

                                      II-1
                                     
<PAGE>   4
ITEM 6.   INDEMNIFICATION OF DIRECTORS AND OFFICERS.

     The Registrant's Certificate of Incorporation limits the liability of
directors to the maximum extent permitted by Delaware law. Delaware law provides
that directors of a corporation will not be personally liable for monetary
damages for breach of their fiduciary duties as directors, except for liability
(i) for any breach of their duty of loyalty to the corporation or its
stockholders, (ii) for acts or omissions not in good faith or that involve
intentional misconduct or a knowing violation of law, (iii) for unlawful
payments of dividends or unlawful stock repurchases or redemption as provided in
section 174 of the Delaware General Corporation Law, or (v) for any transaction
from which the director derived an improper personal benefit.

     The Registrant's Bylaws provide that the Registrant shall indemnify its
directors and officers and may indemnify its employees and other agents to the
fullest extent permitted by law. The Registrant believes that indemnification
under its Bylaws covers at least negligence and gross negligence on the part of
indemnified parties. The Registrant's Bylaws also permit the Registrant to
secure insurance on behalf of any officer, director, and employee or other
agents for any liability arising out of his or her actions in such capacity,
regardless of whether the Registrant would have the power to indemnify him or
her against such liability under the General Corporation Law of Delaware. The
Registrant currently has secured such insurance on behalf of its officers and
directors.

     The Registrant has entered into agreements to indemnify its directors and
officers, in addition to indemnification provided for in the Registrant's
Bylaws. Subject to certain conditions, these agreements, among other things,
indemnify the Registrant's directors and officers for certain expenses
(including attorney's fees), judgments, fines and settlement amounts incurred by
any such person in any action or proceeding, including any action by or in the
right of the Registrant, arising out of such person's services as a director or
officer of the Registrant, any subsidiary of the Registrant or any other company
or enterprise to which the person provides services at the request of the
Registrant.

ITEM 7.   EXEMPTION FROM REGISTRATION CLAIMED.

     Not applicable.

ITEM 8.   EXHIBITS.
<TABLE>
<CAPTION>
                        Exhibit
                        Number   Document
                        ------   --------

                        <S>      <C>                                                             
                        4.1      1998 Nonstatutory Stock Option Plan and form of Option Agreement
                                 thereunder.

                        4.2      1998 Employee Stock Purchase Plan and form of Subscription Agreement
                                 thereunder.

                        4.3      1991 Stock Plan, as amended.

                        4.4      1996 Director Option Plan, as amended.

                        5.1      Opinion of Wilson Sonsini Goodrich & Rosati, a Professional Corporation.

                        23.1     Consent of Ernst & Young LLP, Independent Auditors.

                        23.2     Consent of Counsel (contained in Exhibit 5.1).

                        24.1     Power of Attorney (see page II-4).
</TABLE>


                                      II-2
<PAGE>   5
ITEM 9.   UNDERTAKINGS.

     A.   The undersigned registrant hereby undertakes:

          (1)  To file, during any period in which offers or sales are being
made, a post-effective amendment to this registration statement to include any
material information with respect to the plan of distribution not previously
disclosed in the registration statement or any material change to such
information in the registration statement.

          (2)  That, for the purpose of determining any liability under the
Securities Act of 1933, each such post-effective amendment shall be deemed to be
a new registration statement relating to the securities offered therein, and the
offering of such securities at that time shall be deemed to be the initial bona
fide offering thereof.

          (3)  To remove from registration by means of a post-effective
amendment any of the securities being registered which remain unsold at the
termination of the offering.

     B.   The undersigned registrant hereby undertakes that, for purposes of
determining any liability under the Securities Act of 1933, as amended, (the
"Securities Act") each filing of the registrant's annual report pursuant to
Section 13(a) or Section 15(d) of the Securities Exchange Act of 1934 (and,
where applicable, each filing of an employee benefit plan's annual report
pursuant to Section 15(d) of the Securities Exchange Act of 1934) that is
incorporated by reference in the registration statement shall be deemed to be a
new registration statement relating to the securities offered therein, and the
offering of such securities at that time shall be deemed to be the initial bona
fide offering thereof.

     C.   Insofar as indemnification for liabilities arising under the
Securities Act may be permitted to directors, officers and controlling persons
of the Company pursuant to the Delaware General Corporation Law, the Articles of
Incorporation of the Company, the Bylaws of the Company, indemnification
agreements entered into between the Company and its officers and directors or
otherwise, the Company has been advised that in the opinion of the Securities
and Exchange Commission such indemnification is against public policy as
expressed in the Securities and Exchange Act and is, therefore, unenforceable.
In the event that a claim for indemnification against such liabilities (other
than the payment by the Company in successful defense of any action, suit or
proceeding) is asserted by such director, officer or controlling person in
connection with the securities being registered hereunder, the Company will,
unless in the opinion of its counsel the matter has been settled by controlling
precedent, submit to a court of appropriate jurisdiction the question of whether
such indemnification by it is against public policy as expressed in the
Securities Act and will be governed by the final adjudication of such issue.


                                   SIGNATURES

        Pursuant to the requirements of the Securities Act of 1933, the
Registrant, Cardiac Pathways Corporation, a corporation organized and existing
under the laws of the State of Delaware, certifies that it has reasonable
grounds to believe that it meets all of the requirements for filing on Form S-8
and has duly caused this Registration Statement to be signed on its behalf by
the undersigned, thereunto duly authorized, in the City of Sunnyvale, State of
California, on this 17th day of December, 1998.


                         CARDIAC PATHWAYS CORPORATION



                         By:    /s/ William N. Starling
                               ------------------------------------------------
                               William N. Starling,
                               President and Chief Executive Officer
                               (Principal Executive Officer)



                                      II-3
<PAGE>   6


                                POWER OF ATTORNEY

        KNOW ALL PERSONS BY THESE PRESENTS, that each such person whose
signature appears below constitutes and appoints, jointly and severally, William
N. Starling and G. Michael Latta as his or her attorneys-in-fact, each with the
power of substitution, for him or her in any and all capacities, to sign any
amendments to this Registration Statement on Form S-8 (including post-effective
amendments), and to file the same, with all exhibits thereto, and other
documents in connection therewith, with the Securities and Exchange Commission,
hereby ratifying and confirming all that each of said attorneys-in-fact, or his
substitute or substitutes, may do or cause to be done by virtue hereof.



        PURSUANT TO THE REQUIREMENTS OF THE SECURITIES ACT OF 1933, THIS
REGISTRATION STATEMENT HAS BEEN SIGNED BY THE FOLLOWING PERSONS IN THE
CAPACITIES AND ON THE DATES INDICATED.
<TABLE>
<CAPTION>

                SIGNATURE                                                        TITLE                           DATE
                ---------                                                        -----                           ----
<S>                                                                  <C>                                      <C> 

/s/ William N. Starling                                                                                       
- ------------------------------------------------------------------   President, Chief Executive               December 17, 1998
(William N. Starling)                                                  Officer and Director
                                                                       (Principal Executive
                                                                       Officer)
/s/ G. Michael Latta                                                                                          
- ------------------------------------------------------------------   Vice President and Chief                 December 17, 1998
(G. Michael Latta)                                                    Financial Officer (Principal
                                                                      Financial and Accounting
                                                                      Officer)
/s/ Michael L. Eagle                                                  
- ------------------------------------------------------------------    
(Michael L. Eagle)                                                    Director                                December 17, 1998

/s/ Thomas J. Fogarty, M.D.                                           
- ------------------------------------------------------------------    Director                                December 17, 1998
(Thomas J. Fogarty, M.D.)

/s/ Glendon E. French                                                 
- ------------------------------------------------------------------    Director                                December 17, 1998
(Glendon E. French)

/s/ Joseph P. Ilvento, M.D.                                           
- ------------------------------------------------------------------    Director                                December 17, 1998
(Joseph P. Ilvento, M.D.)

/s/ Louis G. Lange, M.D.                                                                      
- ------------------------------------------------------------------    Director                                December 17, 1998
(Louis G. Lange, M.D.)

</TABLE>

                                      II-4
<PAGE>   7



                       SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549



                       -----------------------------------

                                    EXHIBITS

                       -----------------------------------


                       Registration Statement on Form S-8

                          Cardiac Pathways Corporation

                                December 17, 1998



<PAGE>   8
                                INDEX TO EXHIBITS

<TABLE>
<CAPTION>
       EXHIBIT
       NUMBER                          EXHIBIT
       ------                          -------
        <S>      <C>                                                        
         4.1     1998 Nonstatutory Stock Option Plan and form of Option
                 Agreement thereunder.
         4.2     1998 Employee Stock Purchase Plan and form of Subscription
                 Agreement thereunder.
         4.3     1991 Stock Plan, as amended.
         4.4     1996 Director Option Plan, as amended.
         5.1     Opinion of Wilson Sonsini Goodrich & Rosati, a
                 Professional Corporation.
        23.1     Consent of Ernst & Young LLP, Independent Auditors.
        23.2     Consent of Counsel (contained in Exhibit 5.1).
        24.1     Power of Attorney (see page II-4).
</TABLE>


<PAGE>   1
                                                                     EXHIBIT 4.1

                          CARDIAC PATHWAYS CORPORATION

                       1998 NONSTATUTORY STOCK OPTION PLAN


     1.   Purposes of the Plan. The purposes of this 1998 Nonstatutory Stock
Option Plan are:

          -    to attract and retain the best available personnel for positions
               of substantial responsibility,

          -    to provide additional incentive to Employees, Directors and
               Consultants, and

          -    to promote the success of the Company's business.

          Options granted under the Plan will be Nonstatutory Stock Options.

     2.   Definitions. As used herein, the following definitions shall apply:

          (a)  "Administrator" means the Board or any of its Committees as shall
be administering the Plan, in accordance with Section 4 of the Plan.

          (b)  "Applicable Laws" means the requirements relating to the
administration of stock option plans under U.S. state corporate laws, U.S.
federal and state securities laws, the Code, any stock exchange or quotation
system on which the Common Stock is listed or quoted and the applicable laws of
any foreign country or jurisdiction where Options are, or will be, granted under
the Plan.

          (c)  "Board" means the Board of Directors of the Company.

          (d)  "Code" means the Internal Revenue Code of 1986, as amended.

          (e)  "Committee" means a committee of Directors appointed by the Board
in accordance with Section 4 of the Plan.

          (f)  "Common Stock" means the Common Stock of the Company.

          (g)  "Company" means Cardiac Pathways Corporation, a Delaware
corporation.

          (h)  "Consultant" means any person, including an advisor, engaged by
the Company or a Parent or Subsidiary to render services to such entity.

          (i)  "Director" means a member of the Board.

<PAGE>   2

          (j)  "Disability" means total and permanent disability as defined in
Section 22(e)(3) of the Code.

          (k)  "Employee" means any person, including Officers, employed by the
Company or any Parent or Subsidiary of the Company. A Service Provider shall not
cease to be an Employee in the case of (i) any leave of absence approved by the
Company or (ii) transfers between locations of the Company or between the
Company, its Parent, any Subsidiary, or any successor. Neither service as a
Director nor payment of a director's fee by the Company shall be sufficient to
constitute "employment" by the Company.

          (l)  "Exchange Act" means the Securities Exchange Act of 1934, as
amended.

          (m)  "Fair Market Value" means, as of any date, the value of Common
Stock determined as follows:

               (i)     If the Common Stock is listed on any established stock
exchange or a national market system, including without limitation the Nasdaq
National Market or The Nasdaq SmallCap Market of The Nasdaq Stock Market, its
Fair Market Value shall be the closing sales price for such stock (or the
closing bid, if no sales were reported) as quoted on such exchange or system for
the last market trading day prior to the time of determination, as reported in
The Wall Street Journal or such other source as the Administrator deems
reliable;

               (ii)    If the Common Stock is regularly quoted by a recognized
securities dealer but selling prices are not reported, the Fair Market Value of
a Share of Common Stock shall be the mean between the high bid and low asked
prices for the Common Stock on the last market trading day prior to the day of
determination, as reported in The Wall Street Journal or such other source as
the Administrator deems reliable;

               (iii)   In the absence of an established market for the Common
Stock, the Fair Market Value shall be determined in good faith by the
Administrator.

          (n)  "Notice of Grant" means a written or electronic notice evidencing
certain terms and conditions of an individual Option grant. The Notice of Grant
is part of the Option Agreement.

          (o)  "Officer" means a person who is an officer of the Company within
the meaning of Section 16 of the Exchange Act and the rules and regulations
promulgated thereunder.

          (p)  "Option" means a nonstatutory stock option granted pursuant to
the Plan, that is not intended to qualify as an incentive stock option within
the meaning of Section 422 of the Code and the regulations promulgated
thereunder.

          (q)  "Option Agreement" means an agreement between the Company and an
Optionee evidencing the terms and conditions of an individual Option grant. The
Option Agreement is subject to the terms and conditions of the Plan.


                                      -2-
<PAGE>   3

          (r)  "Option Exchange Program" means a program whereby outstanding
options are surrendered in exchange for options with a lower exercise price.

          (s)  "Optioned Stock" means the Common Stock subject to an Option.

          (t)  "Optionee" means the holder of an outstanding Option granted
under the Plan.

          (u)  "Parent" means a "parent corporation," whether now or hereafter
existing, as defined in Section 424(e) of the Code.

          (v)  "Plan" means this 1998 Nonstatutory Stock Option Plan.

          (w)  "Service Provider" means an Employee including an Officer,
Consultant or Director.

          (x)  "Share" means a share of the Common Stock, as adjusted in
accordance with Section 12 of the Plan.

          (y)  "Subsidiary" means a "subsidiary corporation," whether now or
hereafter existing, as defined in Section 424(f) of the Code.

     3.   Stock Subject to the Plan. Subject to the provisions of Section 12 of
the Plan, the maximum aggregate number of Shares which may be optioned and sold
under the Plan is Four Hundred Thousand (400,000) Shares. The Shares may be
authorized, but unissued, or reacquired Common Stock.

          If an Option expires or becomes unexercisable without having been
exercised in full, or is surrendered pursuant to an Option Exchange Program, the
unpurchased Shares which were subject thereto shall become available for future
grant or sale under the Plan (unless the Plan has terminated).

     4.   Administration of the Plan.

          (a)  Administration. The Plan shall be administered by (i) the Board
or (ii) a Committee, which committee shall be constituted to satisfy Applicable
Laws.

          (b)  Powers of the Administrator. Subject to the provisions of the
Plan, and in the case of a Committee, subject to the specific duties delegated
by the Board to such Committee, the Administrator shall have the authority, in
its discretion:

               (i)     to determine the Fair Market Value of the Common Stock;

               (ii)    to select the Service Providers to whom Options may be
granted hereunder;

               (iii)   to determine whether and to what extent Options are
granted hereunder;


                                      -3-
<PAGE>   4

               (iv)    to determine the number of shares of Common Stock to be
covered by each Option granted hereunder;

               (v)     to approve forms of agreement for use under the Plan;

               (vi)    to determine the terms and conditions, not inconsistent
with the terms of the Plan, of any award granted hereunder. Such terms and
conditions include, but are not limited to, the exercise price, the time or
times when Options may be exercised (which may be based on performance
criteria), any vesting acceleration or waiver of forfeiture restrictions, and
any restriction or limitation regarding any Option or the shares of Common Stock
relating thereto, based in each case on such factors as the Administrator, in
its sole discretion, shall determine;

               (vii)   to reduce the exercise price of any Option to the then
current Fair Market Value if the Fair Market Value of the Common Stock covered
by such Option shall have declined since the date the Option was granted;

               (viii)  to institute an Option Exchange Program;

               (ix)    to construe and interpret the terms of the Plan and
awards granted pursuant to the Plan;

               (x)     to prescribe, amend and rescind rules and regulations
relating to the Plan, including rules and regulations relating to sub-plans
established for the purpose of qualifying for preferred tax treatment under
foreign tax laws;

               (xi)    to modify or amend each Option (subject to Section 14(b)
of the Plan), including the discretionary authority to extend the
post-termination exercisability period of Options longer than is otherwise
provided for in the Plan;

               (xii)   to authorize any person to execute on behalf of the
Company any instrument required to effect the grant of an Option previously
granted by the Administrator;

               (xiii)  to determine the terms and restrictions applicable to
Options;

               (xiv)   to allow Optionees to satisfy withholding tax
obligations by electing to have the Company withhold from the Shares to be
issued upon exercise of an Option that number of Shares having a Fair Market
Value equal to the amount required to be withheld. The Fair Market Value of the
Shares to be withheld shall be determined on the date that the amount of tax to
be withheld is to be determined. All elections by an Optionee to have Shares
withheld for this purpose shall be made in such form and under such conditions
as the Administrator may deem necessary or advisable; and

               (xv)    to make all other determinations deemed necessary or
advisable for administering the Plan.


                                      -4-
<PAGE>   5

          (c)  Effect of Administrator's Decision. The Administrator's
decisions, determinations and interpretations shall be final and binding on all
Optionees and any other holders of Options.

     5.   Eligibility. Options may be granted to Service Providers; provided,
however, that notwithstanding anything to the contrary contained in the Plan,
Options may not be granted to Officers and Directors.

     6.   Limitation. Neither the Plan nor any Option shall confer upon an
Optionee any right with respect to continuing the Optionee's relationship as a
Service Provider with the Company, nor shall they interfere in any way with the
Optionee's right or the Company's right to terminate such relationship at any
time, with or without cause.

     7.   Term of Plan. The Plan shall become effective upon its adoption by the
Board. It shall continue in effect for ten (10) years, unless sooner terminated
under Section 14 of the Plan.

     8.   Term of Option. The term of each Option shall be stated in the Option
Agreement.

     9.   Option Exercise Price and Consideration.

          (a)  Exercise Price. The per share exercise price for the Shares to be
issued pursuant to exercise of an Option shall be determined by the
Administrator.

          (b)  Waiting Period and Exercise Dates. At the time an Option is
granted, the Administrator shall fix the period within which the Option may be
exercised and shall determine any conditions which must be satisfied before the
Option may be exercised.

          (c)  Form of Consideration. The Administrator shall determine the
acceptable form of consideration for exercising an Option, including the method
of payment. Such consideration may consist entirely of:

               (i)     cash;

               (ii)    check;

               (iii)   promissory note;

               (iv)    other Shares which (A) in the case of Shares acquired
upon exercise of an option, have been owned by the Optionee for more than six
months on the date of surrender, and (B) have a Fair Market Value on the date of
surrender equal to the aggregate exercise price of the Shares as to which said
Option shall be exercised;

               (v)     consideration received by the Company under a cashless
exercise program implemented by the Company in connection with the Plan;


                                      -5-
<PAGE>   6

               (vi)    a reduction in the amount of any Company liability to
the Optionee, including any liability attributable to the Optionee's
participation in any Company-sponsored deferred compensation program or
arrangement;

               (vii)   such other consideration and method of payment for the
issuance of Shares to the extent permitted by Applicable Laws; or

               (viii)  any combination of the foregoing methods of payment.

     10.  Exercise of Option.

          (a)  Procedure for Exercise; Rights as a Stockholder. Any Option
granted hereunder shall be exercisable according to the terms of the Plan and at
such times and under such conditions as determined by the Administrator and set
forth in the Option Agreement. An Option may not be exercised for a fraction of
a Share.

               An Option shall be deemed exercised when the Company receives:
(i) written or electronic notice of exercise (in accordance with the Option
Agreement) from the person entitled to exercise the Option, and (ii) full
payment for the Shares with respect to which the Option is exercised. Full
payment may consist of any consideration and method of payment authorized by the
Administrator and permitted by the Option Agreement and the Plan. Shares issued
upon exercise of an Option shall be issued in the name of the Optionee or, if
requested by the Optionee, in the name of the Optionee and his or her spouse.
Until the Shares are issued (as evidenced by the appropriate entry on the books
of the Company or of a duly authorized transfer agent of the Company), no right
to vote or receive dividends or any other rights as a stockholder shall exist
with respect to the Optioned Stock, notwithstanding the exercise of the Option.
The Company shall issue (or cause to be issued) such Shares promptly after the
Option is exercised. No adjustment will be made for a dividend or other right
for which the record date is prior to the date the Shares are issued, except as
provided in Section 12 of the Plan.

               Exercising an Option in any manner shall decrease the number of
Shares thereafter available, both for purposes of the Plan and for sale under
the Option, by the number of Shares as to which the Option is exercised.

          (b)  Termination of Relationship as a Service Provider. If an Optionee
ceases to be a Service Provider, other than upon the Optionee's death or
Disability, the Optionee may exercise his or her Option, but only within such
period of time as is specified in the Option Agreement, and only to the extent
that the Option is vested on the date of termination (but in no event later than
the expiration of the term of such Option as set forth in the Option Agreement).
In the absence of a specified time in the Option Agreement, the Option shall
remain exercisable for three (3) months following the Optionee's termination.
If, on the date of termination, the Optionee is not vested as to his or her
entire Option, the Shares covered by the unvested portion of the Option shall
revert to the Plan. If, after termination, the Optionee does not exercise his or
her Option within the time specified by the Administrator, the Option shall
terminate, and the Shares covered by such Option shall revert to the Plan.


                                      -6-
<PAGE>   7

          (c)  Disability of Optionee. If an Optionee ceases to be a Service
Provider as a result of the Optionee's Disability, the Optionee may exercise his
or her Option within such period of time as is specified in the Option
Agreement, to the extent the Option is vested on the date of termination (but in
no event later than the expiration of the term of such Option as set forth in
the Option Agreement). In the absence of a specified time in the Option
Agreement, the Option shall remain exercisable for twelve (12) months following
the Optionee's termination. If, on the date of termination, the Optionee is not
vested as to his or her entire Option, the Shares covered by the unvested
portion of the Option shall revert to the Plan. If, after termination, the
Optionee does not exercise his or her Option within the time specified herein,
the Option shall terminate, and the Shares covered by such Option shall revert
to the Plan.

          (d)  Death of Optionee. If an Optionee dies while a Service Provider,
the Option may be exercised within such period of time as is specified in the
Option Agreement (but in no event later than the expiration of the term of such
Option as set forth in the Notice of Grant), by the Optionee's estate or by a
person who acquires the right to exercise the Option by bequest or inheritance,
but only to the extent that the Option is vested on the date of death. In the
absence of a specified time in the Option Agreement, the Option shall remain
exercisable for twelve (12) months following the Optionee's termination. If, at
the time of death, the Optionee is not vested as to his or her entire Option,
the Shares covered by the unvested portion of the Option shall immediately
revert to the Plan. The Option may be exercised by the executor or administrator
of the Optionee's estate or, if none, by the person(s) entitled to exercise the
Option under the Optionee's will or the laws of descent or distribution. If the
Option is not so exercised within the time specified herein, the Option shall
terminate, and the Shares covered by such Option shall revert to the Plan.

          (e)  Buyout Provisions. The Administrator may at any time offer to buy
out for a payment in cash or Shares, an Option previously granted based on such
terms and conditions as the Administrator shall establish and communicate to the
Optionee at the time that such offer is made.

     11.  Non-Transferability of Options . Unless determined otherwise by the
Administrator, an Option may not be sold, pledged, assigned, hypothecated,
transferred, or disposed of in any manner other than by will or by the laws of
descent or distribution and may be exercised, during the lifetime of the
Optionee, only by the Optionee. If the Administrator makes an Option
transferable, such Option shall contain such additional terms and conditions as
the Administrator deems appropriate.

     12.  Adjustments Upon Changes in Capitalization, Dissolution, Merger or
Asset Sale.

          (a)  Changes in Capitalization. Subject to any required action by the
stockholders of the Company, the number of shares of Common Stock covered by
each outstanding Option, and the number of shares of Common Stock which have
been authorized for issuance under the Plan but as to which no Options have yet
been granted or which have been returned to the Plan upon cancellation or
expiration of an Option, as well as the price per share of Common Stock covered
by each such outstanding Option, shall be proportionately adjusted for any
increase or decrease in the number of issued shares of Common Stock resulting
from a stock split, reverse stock split, stock dividend, combination or
reclassification of the Common Stock, or any other increase or decrease in the
number of issued shares of Common Stock


                                      -7-
<PAGE>   8

effected without receipt of consideration by the Company; provided, however,
that conversion of any convertible securities of the Company shall not be deemed
to have been "effected without receipt of consideration." Such adjustment shall
be made by the Board, whose determination in that respect shall be final,
binding and conclusive. Except as expressly provided herein, no issuance by the
Company of shares of stock of any class, or securities convertible into shares
of stock of any class, shall affect, and no adjustment by reason thereof shall
be made with respect to, the number or price of shares of Common Stock subject
to an Option.

          (b)  Dissolution or Liquidation. In the event of the proposed
dissolution or liquidation of the Company, the Administrator shall notify each
Optionee as soon as practicable prior to the effective date of such proposed
transaction. The Administrator in its discretion may provide for an Optionee to
have the right to exercise his or her Option until ten (10) days prior to such
transaction as to all of the Optioned Stock covered thereby, including Shares as
to which the Option would not otherwise be exercisable. In addition, the
Administrator may provide that any Company repurchase option applicable to any
Shares purchased upon exercise of an Option shall lapse as to all such Shares,
provided the proposed dissolution or liquidation takes place at the time and in
the manner contemplated. To the extent it has not been previously exercised, an
Option will terminate immediately prior to the consummation of such proposed
action.

          (c)  Merger or Asset Sale. In the event of a merger of the Company
with or into another corporation, or the sale of substantially all of the assets
of the Company, each outstanding Option shall be assumed or an equivalent option
or right substituted by the successor corporation or a Parent or Subsidiary of
the successor corporation. In the event that the successor corporation refuses
to assume or substitute for the Option, the Optionee shall fully vest in and
have the right to exercise the Option as to all of the Optioned Stock, including
Shares as to which it would not otherwise be vested or exercisable. If an Option
becomes fully vested and exercisable in lieu of assumption or substitution in
the event of a merger or sale of assets, the Administrator shall notify the
Optionee in writing or electronically that the Option shall be fully vested and
exercisable for a period of fifteen (15) days from the date of such notice, and
the Option shall terminate upon the expiration of such period. For the purposes
of this paragraph, the Option shall be considered assumed if, following the
merger or sale of assets, the option or right confers the right to purchase or
receive, for each Share of Optioned Stock, immediately prior to the merger or
sale of assets, the consideration (whether stock, cash, or other securities or
property) received in the merger or sale of assets by holders of Common Stock
for each Share held on the effective date of the transaction (and if holders
were offered a choice of consideration, the type of consideration chosen by the
holders of a majority of the outstanding Shares); provided, however, that if
such consideration received in the merger or sale of assets is not solely common
stock of the successor corporation or its Parent, the Administrator may, with
the consent of the successor corporation, provide for the consideration to be
received upon the exercise of the Option, for each Share of Optioned Stock to be
solely common stock of the successor corporation or its Parent equal in fair
market value to the per share consideration received by holders of Common Stock
in the merger or sale of assets.

     13.  Date of Grant. The date of grant of an Option shall be, for all
purposes, the date on which the Administrator makes the determination granting
such Option, or such other later date as is determined


                                      -8-
<PAGE>   9

by the Administrator. Notice of the determination shall be provided to each
Optionee within a reasonable time after the date of such grant.

     14.  Amendment and Termination of the Plan.

          (a)  Amendment and Termination. The Board may at any time amend,
alter, suspend or terminate the Plan.

          (b)  Effect of Amendment or Termination. No amendment, alteration,
suspension or termination of the Plan shall impair the rights of any Optionee,
unless mutually agreed otherwise between the Optionee and the Administrator,
which agreement must be in writing and signed by the Optionee and the Company.
Termination of the Plan shall not affect the Administrator's ability to exercise
the powers granted to it hereunder with respect to options granted under the
Plan prior to the date of such termination.

     15.  Conditions Upon Issuance of Shares.

          (a)  Legal Compliance. Shares shall not be issued pursuant to the
exercise of an Option unless the exercise of such Option and the issuance and
delivery of such Shares shall comply with Applicable Laws and shall be further
subject to the approval of counsel for the Company with respect to such
compliance.

          (b)  Investment Representations. As a condition to the exercise of an
Option the Company may require the person exercising such Option to represent
and warrant at the time of any such exercise that the Shares are being purchased
only for investment and without any present intention to sell or distribute such
Shares if, in the opinion of counsel for the Company, such a representation is
required.

     16.  Inability to Obtain Authority. The inability of the Company to obtain
authority from any regulatory body having jurisdiction, which authority is
deemed by the Company's counsel to be necessary to the lawful issuance and sale
of any Shares hereunder, shall relieve the Company of any liability in respect
of the failure to issue or sell such Shares as to which such requisite authority
shall not have been obtained.

     17.  Reservation of Shares. The Company, during the term of this Plan, will
at all times reserve and keep available such number of Shares as shall be
sufficient to satisfy the requirements of the Plan.


                                      -9-
<PAGE>   10

                          CARDIAC PATHWAYS CORPORATION

                       1998 NONSTATUTORY STOCK OPTION PLAN

                             STOCK OPTION AGREEMENT


     Unless otherwise defined herein, the terms defined in the 1998 Nonstatutory
Stock Option Plan shall have the same defined meanings in this Stock Option
Agreement.

I.   NOTICE OF STOCK OPTION GRANT

     [OPTIONEE'S NAME AND ADDRESS]

     You have been granted an option to purchase Common Stock of the Company,
subject to the terms and conditions of the Plan and this Option Agreement, as
follows:

<TABLE>
<S>                                             <C>
           Grant Number                           ______________________________

           Date of Grant                          ______________________________

           Vesting Commencement Date              ______________________________

           Exercise Price per Share               $_____________________________

           Total Number of Shares Granted         ______________________________

           Total Exercise Price                   $_____________________________

           Type of Option:                        Nonstatutory Stock Option

           Term/Expiration Date:                  ______________________________

</TABLE>

     Vesting Schedule:

     Subject to the Optionee continuing to be a Service Provider on such dates,
this Option shall vest and become exercisable in accordance with the following
schedule:

     [25% OF THE SHARES SUBJECT TO THE OPTION SHALL VEST TWELVE MONTHS AFTER THE
VESTING COMMENCEMENT DATE, AND 1/48TH OF THE SHARES SUBJECT TO THE OPTION SHALL
VEST UPON THE LAST DAY OF EACH MONTH THEREAFTER.]


<PAGE>   11

     Termination Period:

     This Option may be exercised for _____ [DAYS/MONTHS] after Optionee ceases
to be a Service Provider. Upon the death or Disability of the Optionee, this
Option may be exercised for such longer period as provided in the Plan. In no
event shall this Option be exercised later than the Term/Expiration Date as
provided above.

II.  AGREEMENT

     1.   Grant of Option. The Plan Administrator of the Company hereby grants
to the Optionee named in the Notice of Grant attached as Part I of this
Agreement (the "Optionee") an option (the "Option") to purchase the number of
Shares, as set forth in the Notice of Grant, at the exercise price per share set
forth in the Notice of Grant (the "Exercise Price"), subject to the terms and
conditions of the Plan, which is incorporated herein by reference. Subject to
Section 14(b) of the Plan, in the event of a conflict between the terms and
conditions of the Plan and the terms and conditions of this Option Agreement,
the terms and conditions of the Plan shall prevail.

     2.   Exercise of Option.

          (a)  Right to Exercise. This Option is exercisable during its term in
accordance with the Vesting Schedule set out in the Notice of Grant and the
applicable provisions of the Plan and this Option Agreement.

          (b)  Method of Exercise. This Option is exercisable by delivery of an
exercise notice, in the form attached as Exhibit A (the "Exercise Notice"),
which shall state the election to exercise the Option, the number of Shares in
respect of which the Option is being exercised (the "Exercised Shares"), and
such other representations and agreements as may be required by the Company
pursuant to the provisions of the Plan. The Exercise Notice shall be completed
by the Optionee and delivered to [TITLE]. The Exercise Notice shall be
accompanied by payment of the aggregate Exercise Price as to all Exercised
Shares. This Option shall be deemed to be exercised upon receipt by the Company
of such fully executed Exercise Notice accompanied by such aggregate Exercise
Price.

          No Shares shall be issued pursuant to the exercise of this Option
unless such issuance and exercise complies with Applicable Laws. Assuming such
compliance, for income tax purposes the Exercised Shares shall be considered
transferred to the Optionee on the date the Option is exercised with respect to
such Exercised Shares.

     3.   Method of Payment. Payment of the aggregate Exercise Price shall be by
any of the following, or a combination thereof, at the election of the Optionee:

          (a)  cash;

          (b)  check;


                                      -2-
<PAGE>   12

          (c)  consideration received by the Company under a cashless exercise
program implemented by the Company in connection with the Plan; or

          (d)  surrender of other Shares which (i) in the case of Shares
acquired upon exercise of an option, have been owned by the Optionee for more
than six (6) months on the date of surrender, AND (ii) have a Fair Market Value
on the date of surrender equal to the aggregate Exercise Price of the Exercised
Shares.

     4.   Non-Transferability of Option. This Option may not be transferred in
any manner otherwise than by will or by the laws of descent or distribution and
may be exercised during the lifetime of Optionee only by the Optionee. The terms
of the Plan and this Option Agreement shall be binding upon the executors,
administrators, heirs, successors and assigns of the Optionee.

     5.   Term of Option. This Option may be exercised only within the term set
out in the Notice of Grant, and may be exercised during such term only in
accordance with the Plan and the terms of this Option Agreement.

     6.   Tax Consequences. Some of the federal tax consequences relating to
this Option, as of the date of this Option, are set forth below. THIS SUMMARY IS
NECESSARILY INCOMPLETE, AND THE TAX LAWS AND REGULATIONS ARE SUBJECT TO CHANGE.
THE OPTIONEE SHOULD CONSULT A TAX ADVISER BEFORE EXERCISING THIS OPTION OR
DISPOSING OF THE SHARES.

          (a)  Exercising the Option. The Optionee may incur regular federal
income tax liability upon exercise of an NSO. The Optionee will be treated as
having received compensation income (taxable at ordinary income tax rates) equal
to the excess, if any, of the Fair Market Value of the Exercised Shares on the
date of exercise over their aggregate Exercise Price. If the Optionee is an
Employee or a former Employee, the Company will be required to withhold from his
or her compensation or collect from Optionee and pay to the applicable taxing
authorities an amount in cash equal to a percentage of this compensation income
at the time of exercise, and may refuse to honor the exercise and refuse to
deliver Shares if such withholding amounts are not delivered at the time of
exercise.

          (b)  Disposition of Shares. If the Optionee holds NSO Shares for at
least one year, any gain realized on disposition of the Shares will be treated
as long-term capital gain for federal income tax purposes.

     7.   Entire Agreement; Governing Law. The Plan is incorporated herein by
reference. The Plan and this Option Agreement constitute the entire agreement of
the parties with respect to the subject matter hereof and supersede in their
entirety all prior undertakings and agreements of the Company and Optionee with
respect to the subject matter hereof, and may not be modified adversely to the
Optionee's interest except by means of a writing signed by the Company and
Optionee. This agreement is governed by the internal substantive laws, but not
the choice of law rules, of California.


                                      -3-
<PAGE>   13

     8.   NO GUARANTEE OF CONTINUED SERVICE. OPTIONEE ACKNOWLEDGES AND AGREES
THAT THE VESTING OF SHARES PURSUANT TO THE VESTING SCHEDULE HEREOF IS EARNED
ONLY BY CONTINUING AS A SERVICE PROVIDER AT THE WILL OF THE COMPANY (AND NOT
THROUGH THE ACT OF BEING HIRED, BEING GRANTED AN OPTION OR PURCHASING SHARES
HEREUNDER). OPTIONEE FURTHER ACKNOWLEDGES AND AGREES THAT THIS AGREEMENT, THE
TRANSACTIONS CONTEMPLATED HEREUNDER AND THE VESTING SCHEDULE SET FORTH HEREIN DO
NOT CONSTITUTE AN EXPRESS OR IMPLIED PROMISE OF CONTINUED ENGAGEMENT AS A
SERVICE PROVIDER FOR THE VESTING PERIOD, FOR ANY PERIOD, OR AT ALL, AND SHALL
NOT INTERFERE WITH OPTIONEE'S RIGHT OR THE COMPANY'S RIGHT TO TERMINATE
OPTIONEE'S RELATIONSHIP AS A SERVICE PROVIDER AT ANY TIME, WITH OR WITHOUT
CAUSE.

     By your signature and the signature of the Company's representative below,
you and the Company agree that this Option is granted under and governed by the
terms and conditions of the Plan and this Option Agreement. Optionee has
reviewed the Plan and this Option Agreement in their entirety, has had an
opportunity to obtain the advice of counsel prior to executing this Option
Agreement and fully understands all provisions of the Plan and Option Agreement.
Optionee hereby agrees to accept as binding, conclusive and final all decisions
or interpretations of the Administrator upon any questions relating to the Plan
and Option Agreement. Optionee further agrees to notify the Company upon any
change in the residence address indicated below.

<TABLE>
<S>                                        <C>

OPTIONEE                                   CARDIAC PATHWAYS CORPORATION


- -----------------------------------        -------------------------------------
Signature                                  By

- -----------------------------------        -------------------------------------
Print Name                                 Title

- -----------------------------------
Residence Address

- -----------------------------------
</TABLE>



                                      -4-
<PAGE>   14

                                    EXHIBIT A

                          CARDIAC PATHWAYS CORPORATION

                       1998 NONSTATUTORY STOCK OPTION PLAN

                                 EXERCISE NOTICE


CARDIAC PATHWAYS CORPORATION
[ADDRESS]

Attention: [TITLE]

     1.   Exercise of Option. Effective as of today, ________________, 199__,
the undersigned ("Purchaser") hereby elects to purchase ______________ shares
(the "Shares") of the Common Stock of Cardiac Pathways Corporation (the
"Company") under and pursuant to the 1998 Nonstatutory Stock Option Plan (the
"Plan") and the Stock Option Agreement dated ________, 19___ (the "Option
Agreement"). The purchase price for the Shares shall be $_____ , as required by
the Option Agreement.


     2.   Delivery of Payment. Purchaser herewith delivers to the Company the
full purchase price for the Shares.

     3.   Representations of Purchaser. Purchaser acknowledges that Purchaser
has received, read and understood the Plan and the Option Agreement and agrees
to abide by and be bound by their terms and conditions.

     4.   Rights as Stockholder. Until the issuance (as evidenced by the
appropriate entry on the books of the Company or of a duly authorized transfer
agent of the Company) of the Shares, no right to vote or receive dividends or
any other rights as a stockholder shall exist with respect to the Optioned
Stock, notwithstanding the exercise of the Option. The Shares so acquired shall
be issued to the Optionee as soon as practicable after exercise of the Option.
No adjustment will be made for a dividend or other right for which the record
date is prior to the date of issuance, except as provided in Section 12 of the
Plan.

     5.   Tax Consultation. Purchaser understands that Purchaser may suffer
adverse tax consequences as a result of Purchaser's purchase or disposition of
the Shares. Purchaser represents that Purchaser has consulted with any tax
consultants Purchaser deems advisable in connection with the purchase or
disposition of the Shares and that Purchaser is not relying on the Company for
any tax advice.


<PAGE>   15

     6.   Entire Agreement; Governing Law. The Plan and Option Agreement are
incorporated herein by reference. This Agreement, the Plan and the Option
Agreement constitute the entire agreement of the parties with respect to the
subject matter hereof and supersede in their entirety all prior undertakings and
agreements of the Company and Purchaser with respect to the subject matter
hereof, and may not be modified adversely to the Purchaser's interest except by
means of a writing signed by the Company and Purchaser. This agreement is
governed by the internal substantive laws, but not the choice of law rules, of
California.

<TABLE>
<S>                                         <C>
Submitted by:                               Accepted by:

PURCHASER                                  CARDIAC PATHWAYS CORPORATION


- ----------------------------------         -------------------------------------
Signature                                  By

- ----------------------------------         -------------------------------------
Print Name                                 Title


                                           -------------------------------------
                                           Date Received


Address:                                   Address:
        --------------------------                 -----------------------------

        --------------------------                 -----------------------------

        --------------------------                 -----------------------------
</TABLE>


                                      -2-

<PAGE>   1

                                                                     EXHIBIT 4.2


                          CARDIAC PATHWAYS CORPORATION

                        1998 EMPLOYEE STOCK PURCHASE PLAN


            The following constitute the provisions of the 1998 Employee Stock
Purchase Plan of Cardiac Pathways Corporation.

        1.      Purpose. The purpose of the Plan is to provide employees of the
Company and its Designated Subsidiaries with an opportunity to purchase Common
Stock of the Company through accumulated payroll deductions. It is the intention
of the Company to have the Plan qualify as an "Employee Stock Purchase Plan"
under Section 423 of the Internal Revenue Code of 1986, as amended. The
provisions of the Plan, accordingly, shall be construed so as to extend and
limit participation in a manner consistent with the requirements of that section
of the Code.

        2.      Definitions.

                (a)     "Board" shall mean the Board of Directors of the
Company.

                (b)     "Code" shall mean the Internal Revenue Code of 1986, as
amended.

                (c)     "Common Stock" shall mean the common stock of the
Company.

                (d)     "Company" shall mean Cardiac Pathways Corporation and
any Designated Subsidiary of the Company.

                (e)     "Compensation" shall mean all base straight time gross
earnings, commissions, overtime, shift premium, incentive compensation,
incentive payments, and bonuses but exclusive of payments for any other
compensation.

                (f)     "Designated Subsidiary" shall mean any Subsidiary which
has been designated by the Board from time to time in its sole discretion as
eligible to participate in the Plan.

                (g)     "Employee" shall mean any individual who is an Employee
of the Company for tax purposes whose customary employment with the Company is
at least twenty (20) hours per week and more than five (5) months in any
calendar year. For purposes of the Plan, the employment relationship shall be
treated as continuing intact while the individual is on sick leave or other
leave of absence approved by the Company. Where the period of leave exceeds 90
days and the individual's right to reemployment is not guaranteed either by
statute or by contract, the employment relationship shall be deemed to have
terminated on the 91st day of such leave.

                (h)     "Enrollment Date" shall mean the first Trading Day of
each Offering Period.

                (i)     "Exercise Date" shall mean the last Trading Day of each
Purchase Period.

<PAGE>   2



                (j)     "Fair Market Value" shall mean, as of any date, the
value of Common Stock determined as follows:

                        (1)     If the Common Stock is listed on any established
stock exchange or a national market system, including without limitation the
Nasdaq National Market or The Nasdaq SmallCap Market of The Nasdaq Stock Market,
its Fair Market Value shall be the closing sales price for such stock (or the
closing bid, if no sales were reported) as quoted on such exchange or system for
the last market trading day on the date of such determination, as reported in
The Wall Street Journal or such other source as the Board deems reliable;

                        (2)     If the Common Stock is regularly quoted by a
recognized securities dealer but selling prices are not reported, its Fair
Market Value shall be the mean of the closing bid and asked prices for the
Common Stock on the date of such determination, as reported in The Wall Street
Journal or such other source as the Board deems reliable; or

                        (3)     In the absence of an established market for the
Common Stock, the Fair Market Value thereof shall be determined in good faith by
the Board.

                (k)     "Offering Periods" shall mean the periods of
approximately twenty-four (24) months during which an option granted pursuant to
the Plan may be exercised, commencing on the first Trading Day on or after May 1
and November 1 (beginning in 1998) of each year and terminating on the last
Trading Day in the periods ending twenty-four months later. The first Offering
Period shall be the period commencing with December 1, 1998 and terminating on
the last Trading Day on or before October 31, 2000. The duration and timing of
Offering Periods may be changed pursuant to Section 4 of this Plan.

                (l)     "Plan" shall mean this 1998 Employee Stock Purchase
Plan.

                (m)     "Purchase Period" shall mean the approximately six month
period commencing after one Exercise Date and ending with the next Exercise
Date, except that the first Purchase Period of any Offering Period shall
commence on the Enrollment Date and end with the next Exercise Date.

                (n)     "Purchase Price" shall mean 85% of the Fair Market Value
of a share of Common Stock on the Enrollment Date or on the Exercise Date,
whichever is lower; provided however, that the Purchase Price may be adjusted by
the Board pursuant to Section 20.

                (o)     "Reserves" shall mean the number of shares of Common
Stock covered by each option under the Plan which have not yet been exercised
and the number of shares of Common Stock which have been authorized for issuance
under the Plan but not yet placed under option.

                (p)     "Subsidiary" shall mean a corporation, domestic or
foreign, of which not less than 50% of the voting shares are held by the Company
or a Subsidiary, whether or not such corporation now exists or is hereafter
organized or acquired by the Company or a Subsidiary.



                                      -2-
<PAGE>   3

                (q)     "Trading Day" shall mean a day on which national stock
exchanges and the Nasdaq System are open for trading.

        3.      Eligibility.

                (a)     Any Employee who shall be employed by the Company on a
given Enrollment Date shall be eligible to participate in the Plan.

                (b)     Any provisions of the Plan to the contrary
notwithstanding, no Employee shall be granted an option under the Plan (i) to
the extent that, immediately after the grant, such Employee (or any other person
whose stock would be attributed to such Employee pursuant to Section 424(d) of
the Code) would own capital stock of the Company and/or hold outstanding options
to purchase such stock possessing five percent (5%) or more of the total
combined voting power or value of all classes of the capital stock of the
Company or of any Subsidiary, or (ii) to the extent that his or her rights to
purchase stock under all employee stock purchase plans of the Company and its
subsidiaries accrues at a rate which exceeds Twenty-Five Thousand Dollars
($25,000) worth of stock (determined at the fair market value of the shares at
the time such option is granted) for each calendar year in which such option is
outstanding at any time.

        4.      Offering Periods. The Plan shall be implemented by consecutive,
overlapping Offering Periods with a new Offering Period commencing on the first
Trading Day on or after May 1 and November 1 of each year, or on such other date
as the Board shall determine, and continuing thereafter until terminated in
accordance with Section 20 hereof. The first Offering Period shall begin on
December 1, 1998 and shall end on the last Trading Day on or before October 31,
2000. The Board shall have the power to change the duration of Offering Periods
(including the commencement dates thereof) with respect to future offerings
without stockholder approval if such change is announced prior to the scheduled
beginning of the first Offering Period to be affected thereafter.

        5.      Participation.

                (a)     An eligible Employee may become a participant in the
Plan by completing a subscription agreement authorizing payroll deductions in
the form of Exhibit A to this Plan and filing it with the Company's payroll
office prior to the applicable Enrollment Date.

                (b)     Payroll deductions for a participant shall commence on
the first payroll following the Enrollment Date and shall end on the last
payroll in the Offering Period to which such authorization is applicable, unless
sooner terminated by the participant as provided in Section 10 hereof.

        6.      Payroll Deductions.

                (a)     At the time a participant files his or her subscription
agreement, he or she shall elect to have payroll deductions made on each pay day
during the Offering Period in an amount not



                                      -3-
<PAGE>   4

exceeding fifteen percent (15%) of the Compensation which he or she receives on
each pay day during the Offering Period.

                (b)     All payroll deductions made for a participant shall be
credited to his or her account under the Plan and shall be withheld in whole
percentages only. A participant may not make any additional payments into such
account.

                (c)     A participant may discontinue his or her participation
in the Plan as provided in Section 10 hereof, or may increase or decrease the
rate of his or her payroll deductions during the Offering Period by completing
or filing with the Company a new subscription agreement authorizing a change in
payroll deduction rate. The Board may, in its discretion, limit the number of
participation rate changes during any Offering Period. The change in rate shall
be effective with the first full payroll period following five (5) business days
after the Company's receipt of the new subscription agreement unless the Company
elects to process a given change in participation more quickly. A participant's
subscription agreement shall remain in effect for successive Offering Periods
unless terminated as provided in Section 10 hereof.

                (d)     Notwithstanding the foregoing, to the extent necessary
to comply with Section 423(b)(8) of the Code and Section 3(b) hereof, a
participant's payroll deductions may be decreased to zero percent (0%) at any
time during a Purchase Period. Payroll deductions shall recommence at the rate
provided in such participant's subscription agreement at the beginning of the
first Purchase Period which is scheduled to end in the following calendar year,
unless terminated by the participant as provided in Section 10 hereof.

                (e)     At the time the option is exercised, in whole or in
part, or at the time some or all of the Company's Common Stock issued under the
Plan is disposed of, the participant must make adequate provision for the
Company's federal, state, or other tax withholding obligations, if any, which
arise upon the exercise of the option or the disposition of the Common Stock. At
any time, the Company may, but shall not be obligated to, withhold from the
participant's compensation the amount necessary for the Company to meet
applicable withholding obligations, including any withholding required to make
available to the Company any tax deductions or benefits attributable to sale or
early disposition of Common Stock by the Employee.

        7.      Grant of Option. On the Enrollment Date of each Offering Period,
each eligible Employee participating in such Offering Period shall be granted an
option to purchase on each Exercise Date during such Offering Period (at the
applicable Purchase Price) up to a number of shares of the Company's Common
Stock determined by dividing such Employee's payroll deductions accumulated
prior to such Exercise Date and retained in the Participant's account as of the
Exercise Date by the applicable Purchase Price; provided that in no event shall
an Employee be permitted to purchase during each Purchase Period more than 5,000
shares of the Company's Common Stock (subject to any adjustment pursuant to
Section 19), and provided further that such purchase shall be subject to the
limitations set forth in Sections 3(b) and 12 hereof. The Board may, for future
Offering Periods, increase or decrease, in its absolute discretion, the maximum
number of shares of the



                                      -4-
<PAGE>   5

Company's Common Stock an Employee may purchase during each Purchase Period of
such Offering Period. Exercise of the option shall occur as provided in Section
8 hereof, unless the participant has withdrawn pursuant to Section 10 hereof.
The option shall expire on the last day of the Offering Period.

        8.      Exercise of Option.

                (a)     Unless a participant withdraws from the Plan as provided
in Section 10 hereof, his or her option for the purchase of shares shall be
exercised automatically on the Exercise Date, and the maximum number of full
shares subject to option shall be purchased for such participant at the
applicable Purchase Price with the accumulated payroll deductions in his or her
account. No fractional shares shall be purchased; any payroll deductions
accumulated in a participant's account which are not sufficient to purchase a
full share shall be retained in the participant's account for the subsequent
Purchase Period or Offering Period, subject to earlier withdrawal by the
participant as provided in Section 10 hereof. Any other monies left over in a
participant's account after the Exercise Date shall be returned to the
participant. During a participant's lifetime, a participant's option to purchase
shares hereunder is exercisable only by him or her.

                (b)     If the Board determines that, on a given Exercise Date,
the number of shares with respect to which options are to be exercised may
exceed (i) the number of shares of Common Stock that were available for sale
under the Plan on the Enrollment Date of the applicable Offering Period, or (ii)
the number of shares available for sale under the Plan on such Exercise Date,
the Board may in its sole discretion (x) provide that the Company shall make a
pro rata allocation of the shares of Common Stock available for purchase on such
Enrollment Date or Exercise Date, as applicable, in as uniform a manner as shall
be practicable and as it shall determine in its sole discretion to be equitable
among all participants exercising options to purchase Common Stock on such
Exercise Date, and continue all Offering Periods then in effect, or (y) provide
that the Company shall make a pro rata allocation of the shares available for
purchase on such Enrollment Date or Exercise Date, as applicable, in as uniform
a manner as shall be practicable and as it shall determine in its sole
discretion to be equitable among all participants exercising options to purchase
Common Stock on such Exercise Date, and terminate any or all Offering Periods
then in effect pursuant to Section 20 hereof. The Company may make pro rata
allocation of the shares available on the Enrollment Date of any applicable
Offering Period pursuant to the preceding sentence, notwithstanding any
authorization of additional shares for issuance under the Plan by the Company's
stockholders subsequent to such Enrollment Date.

        9.      Delivery. As promptly as practicable after each Exercise Date on
which a purchase of shares occurs, the Company shall arrange the delivery to
each participant, as appropriate, of a certificate representing the shares
purchased upon exercise of his or her option.



                                      -5-
<PAGE>   6

        10.     Withdrawal.

                (a)     A participant may withdraw all but not less than all the
payroll deductions credited to his or her account and not yet used to exercise
his or her option under the Plan at any time by giving written notice to the
Company in the form of Exhibit B to this Plan. All of the participant's payroll
deductions credited to his or her account shall be paid to such participant
promptly after receipt of notice of withdrawal and such participant's option for
the Offering Period shall be automatically terminated, and no further payroll
deductions for the purchase of shares shall be made for such Offering Period. If
a participant withdraws from an Offering Period, payroll deductions shall not
resume at the beginning of the succeeding Offering Period unless the participant
delivers to the Company a new subscription agreement.

                (b)     A participant's withdrawal from an Offering Period shall
not have any effect upon his or her eligibility to participate in any similar
plan which may hereafter be adopted by the Company or in succeeding Offering
Periods which commence after the termination of the Offering Period from which
the participant withdraws.

        11.     Termination of Employment.

                Upon a participant's ceasing to be an Employee, for any reason,
he or she shall be deemed to have elected to withdraw from the Plan and the
payroll deductions credited to such participant's account during the Offering
Period but not yet used to exercise the option shall be returned to such
participant or, in the case of his or her death, to the person or persons
entitled thereto under Section 15 hereof, and such participant's option shall be
automatically terminated. The preceding sentence notwithstanding, a participant
who receives payment in lieu of notice of termination of employment shall be
treated as continuing to be an Employee for the participant's customary number
of hours per week of employment during the period in which the participant is
subject to such payment in lieu of notice.

        12.     Interest. No interest shall accrue on the payroll deductions of
a participant in the Plan.

        13.     Stock.

                (a)     Subject to adjustment upon changes in capitalization of
the Company as provided in Section 19 hereof, the maximum number of shares of
the Company's Common Stock which shall be made available for sale under the Plan
shall be 100,000 shares, plus an annual increase to be added on the first day of
the Company's fiscal year beginning in 1999 equal to the lesser of (i) 200,000
shares, (ii) 1.5% of the outstanding shares on the last day of the Company's
prior fiscal year or (iii) such amount as may be determined by the Board.

                (b)     The participant shall have no interest or voting right
in shares covered by his option until such option has been exercised.



                                      -6-
<PAGE>   7

                (c)     Shares to be delivered to a participant under the Plan
shall be registered in the name of the participant or in the name of the
participant and his or her spouse.

        14.     Administration. The Plan shall be administered by the Board or a
committee of members of the Board appointed by the Board. The Board or its
committee shall have full and exclusive discretionary authority to construe,
interpret and apply the terms of the Plan, to determine eligibility and to
adjudicate all disputed claims filed under the Plan. Every finding, decision and
determination made by the Board or its committee shall, to the full extent
permitted by law, be final and binding upon all parties.

        15.     Designation of Beneficiary.

                (a)     A participant may file a written designation of a
beneficiary who is to receive any shares and cash, if any, from the
participant's account under the Plan in the event of such participant's death
subsequent to an Exercise Date on which the option is exercised but prior to
delivery to such participant of such shares and cash. In addition, a participant
may file a written designation of a beneficiary who is to receive any cash from
the participant's account under the Plan in the event of such participant's
death prior to exercise of the option. If a participant is married and the
designated beneficiary is not the spouse, spousal consent shall be required for
such designation to be effective.

                (b)     Such designation of beneficiary may be changed by the
participant at any time by written notice. In the event of the death of a
participant and in the absence of a beneficiary validly designated under the
Plan who is living at the time of such participant's death, the Company shall
deliver such shares and/or cash to the executor or administrator of the estate
of the participant, or if no such executor or administrator has been appointed
(to the knowledge of the Company), the Company, in its discretion, may deliver
such shares and/or cash to the spouse or to any one or more dependents or
relatives of the participant, or if no spouse, dependent or relative is known to
the Company, then to such other person as the Company may designate.

        16.     Transferability. Neither payroll deductions credited to a
participant's account nor any rights with regard to the exercise of an option or
to receive shares under the Plan may be assigned, transferred, pledged or
otherwise disposed of in any way (other than by will, the laws of descent and
distribution or as provided in Section 15 hereof) by the participant. Any such
attempt at assignment, transfer, pledge or other disposition shall be without
effect, except that the Company may treat such act as an election to withdraw
funds from an Offering Period in accordance with Section 10 hereof.

        17.     Use of Funds. All payroll deductions received or held by the
Company under the Plan may be used by the Company for any corporate purpose, and
the Company shall not be obligated to segregate such payroll deductions.

        18.     Reports. Individual accounts shall be maintained for each
participant in the Plan. Statements of account shall be given to participating
Employees at least annually, which statements



                                      -7-
<PAGE>   8

shall set forth the amounts of payroll deductions, the Purchase Price, the
number of shares purchased and the remaining cash balance, if any.

        19.     Adjustments Upon Changes in Capitalization, Dissolution,
Liquidation, Merger or Asset Sale.

                (a)     Changes in Capitalization. Subject to any required
action by the stockholders of the Company, the Reserves, the maximum number of
shares each participant may purchase each Purchase Period (pursuant to Section
7), as well as the price per share and the number of shares of Common Stock
covered by each option under the Plan which has not yet been exercised shall be
proportionately adjusted for any increase or decrease in the number of issued
shares of Common Stock resulting from a stock split, reverse stock split, stock
dividend, combination or reclassification of the Common Stock, or any other
increase or decrease in the number of shares of Common Stock effected without
receipt of consideration by the Company; provided, however, that conversion of
any convertible securities of the Company shall not be deemed to have been
"effected without receipt of consideration". Such adjustment shall be made by
the Board, whose determination in that respect shall be final, binding and
conclusive. Except as expressly provided herein, no issuance by the Company of
shares of stock of any class, or securities convertible into shares of stock of
any class, shall affect, and no adjustment by reason thereof shall be made with
respect to, the number or price of shares of Common Stock subject to an option.

                (b)     Dissolution or Liquidation. In the event of the proposed
dissolution or liquidation of the Company, the Offering Period then in progress
shall be shortened by setting a new Exercise Date (the "New Exercise Date"), and
shall terminate immediately prior to the consummation of such proposed
dissolution or liquidation, unless provided otherwise by the Board. The New
Exercise Date shall be before the date of the Company's proposed dissolution or
liquidation. The Board shall notify each participant in writing, at least ten
(10) business days prior to the New Exercise Date, that the Exercise Date for
the participant's option has been changed to the New Exercise Date and that the
participant's option shall be exercised automatically on the New Exercise Date,
unless prior to such date the participant has withdrawn from the Offering Period
as provided in Section 10 hereof.

                (c)     Merger or Asset Sale. In the event of a proposed sale of
all or substantially all of the assets of the Company, or the merger of the
Company with or into another corporation, each outstanding option shall be
assumed or an equivalent option substituted by the successor corporation or a
Parent or Subsidiary of the successor corporation. In the event that the
successor corporation refuses to assume or substitute for the option, any
Purchase Periods then in progress shall be shortened by setting a new Exercise
Date (the "New Exercise Date") and any Offering Periods then in progress shall
end on the New Exercise Date. The New Exercise Date shall be before the date of
the Company's proposed sale or merger. The Board shall notify each participant
in writing, at least ten (10) business days prior to the New Exercise Date, that
the Exercise Date for the participant's option has been changed to the New
Exercise Date and that the participant's option shall be exercised



                                      -8-
<PAGE>   9

automatically on the New Exercise Date, unless prior to such date the
participant has withdrawn from the Offering Period as provided in Section 10
hereof.

        20.     Amendment or Termination.

                (a)     The Board of Directors of the Company may at any time
and for any reason terminate or amend the Plan. Except as provided in Section 19
hereof, no such termination can affect options previously granted, provided that
an Offering Period may be terminated by the Board of Directors on any Exercise
Date if the Board determines that the termination of the Offering Period or the
Plan is in the best interests of the Company and its stockholders. Except as
provided in Section 19 and this Section 20 hereof, no amendment may make any
change in any option theretofore granted which adversely affects the rights of
any participant. To the extent necessary to comply with Section 423 of the Code
(or any successor rule or provision or any other applicable law, regulation or
stock exchange rule), the Company shall obtain stockholder approval in such a
manner and to such a degree as required.

                (b)     Without stockholder consent and without regard to
whether any participant rights may be considered to have been "adversely
affected," the Board (or its committee) shall be entitled to change the Offering
Periods, limit the frequency and/or number of changes in the amount withheld
during an Offering Period, establish the exchange ratio applicable to amounts
withheld in a currency other than U.S. dollars, permit payroll withholding in
excess of the amount designated by a participant in order to adjust for delays
or mistakes in the Company's processing of properly completed withholding
elections, establish reasonable waiting and adjustment periods and/or accounting
and crediting procedures to ensure that amounts applied toward the purchase of
Common Stock for each participant properly correspond with amounts withheld from
the participant's Compensation, and establish such other limitations or
procedures as the Board (or its committee) determines in its sole discretion
advisable which are consistent with the Plan.

                (c)     In the event the Board determines that the ongoing
operation of the Plan may result in unfavorable financial accounting
consequences, the Board may, in its discretion and, to the extent necessary or
desirable, modify or amend the Plan to reduce or eliminate such accounting
consequence including, but not limited to:

                        (1)     altering the Purchase Price for any Offering
Period including an Offering Period underway at the time of the change in
Purchase Price;

                        (2)     shortening any Offering Period so that the
Offering Period ends on a new Exercise Date, including an Offering Period
underway at the time of the Board action; and

                        (3)     allocating shares.

                        Such modifications or amendments shall not require
stockholder approval or the consent of any Plan participants.



                                      -9-
<PAGE>   10

        21.     Notices. All notices or other communications by a participant to
the Company under or in connection with the Plan shall be deemed to have been
duly given when received in the form specified by the Company at the location,
or by the person, designated by the Company for the receipt thereof.

        22.     Conditions Upon Issuance of Shares. Shares shall not be issued
with respect to an option unless the exercise of such option and the issuance
and delivery of such shares pursuant thereto shall comply with all applicable
provisions of law, domestic or foreign, including, without limitation, the
Securities Act of 1933, as amended, the Securities Exchange Act of 1934, as
amended, the rules and regulations promulgated thereunder, and the requirements
of any stock exchange upon which the shares may then be listed, and shall be
further subject to the approval of counsel for the Company with respect to such
compliance.

                As a condition to the exercise of an option, the Company may
require the person exercising such option to represent and warrant at the time
of any such exercise that the shares are being purchased only for investment and
without any present intention to sell or distribute such shares if, in the
opinion of counsel for the Company, such a representation is required by any of
the aforementioned applicable provisions of law.

        23.     Term of Plan. The Plan shall become effective upon the earlier
to occur of its adoption by the Board of Directors or its approval by the
stockholders of the Company. It shall continue in effect for a term of ten (10)
years unless sooner terminated under Section 20 hereof.

        24.     Automatic Transfer to Low Price Offering Period. To the extent
permitted by any applicable laws, regulations, or stock exchange rules if the
Fair Market Value of the Common Stock on any Exercise Date in an Offering Period
is lower than the Fair Market Value of the Common Stock on the Enrollment Date
of such Offering Period, then all participants in such Offering Period shall be
automatically withdrawn from such Offering Period immediately after the exercise
of their option on such Exercise Date and automatically re-enrolled in the
immediately following Offering Period as of the first day thereof.



                                      -10-
<PAGE>   11

                                    EXHIBIT A


                          CARDIAC PATHWAYS CORPORATION

                        1998 EMPLOYEE STOCK PURCHASE PLAN

                             SUBSCRIPTION AGREEMENT



_____ Original Application                         Enrollment Date: ___________
_____ Change in Payroll Deduction Rate
_____ Change of Beneficiary(ies)


1.         ________________ hereby elects to participate in the Cardiac Pathways
            Corporation 1998 Employee Stock Purchase Plan (the "Employee Stock
            Purchase Plan") and subscribes to purchase shares of the Company's
            Common Stock in accordance with this Subscription Agreement and the
            Employee Stock Purchase Plan.

2.          I hereby authorize payroll deductions from each paycheck in the
            amount of ____% of my Compensation on each payday (from 1 to 15%)
            during the Offering Period in accordance with the Employee Stock
            Purchase Plan. (Please note that no fractional percentages are
            permitted.)

3.          I understand that said payroll deductions shall be accumulated for
            the purchase of shares of Common Stock at the applicable Purchase
            Price determined in accordance with the Employee Stock Purchase
            Plan. I understand that if I do not withdraw from an Offering
            Period, any accumulated payroll deductions will be used to
            automatically exercise my option.

4.          I have received a copy of the complete Employee Stock Purchase Plan.
            I understand that my participation in the Employee Stock Purchase
            Plan is in all respects subject to the terms of the Plan. I
            understand that my ability to exercise the option under this
            Subscription Agreement is subject to stockholder approval of the
            Employee Stock Purchase Plan.

5.          Shares purchased for me under the Employee Stock Purchase Plan
            should be issued in the name(s) of (Employee or Employee and Spouse
            only): ___________________________________________________.

6.          I understand that if I dispose of any shares received by me pursuant
            to the Plan within 2 years after the Enrollment Date (the first day
            of the Offering Period during which I purchased such shares) or one
            year after the Exercise Date, I will be treated for federal income
            tax purposes as having received ordinary income at the time of such
            disposition in an amount equal to the excess of the fair market
            value of the shares at the time such shares were purchased by me
            over the price which I paid for the shares. I hereby agree to notify
            the Company in writing


<PAGE>   12

            within 30 days after the date of any disposition of my shares and I
            will make adequate provision for Federal, state or other tax
            withholding obligations, if any, which arise upon the disposition of
            the Common Stock. The Company may, but will not be obligated to,
            withhold from my compensation the amount necessary to meet any
            applicable withholding obligation including any withholding
            necessary to make available to the Company any tax deductions or
            benefits attributable to sale or early disposition of Common Stock
            by me. If I dispose of such shares at any time after the expiration
            of the 2-year and 1-year holding periods, I understand that I will
            be treated for federal income tax purposes as having received income
            only at the time of such disposition, and that such income will be
            taxed as ordinary income only to the extent of an amount equal to
            the lesser of (1) the excess of the fair market value of the shares
            at the time of such disposition over the purchase price which I paid
            for the shares, or (2) 15% of the fair market value of the shares on
            the first day of the Offering Period. The remainder of the gain, if
            any, recognized on such disposition will be taxed as capital gain.

7.          I hereby agree to be bound by the terms of the Employee Stock
            Purchase Plan. The effectiveness of this Subscription Agreement is
            dependent upon my eligibility to participate in the Employee Stock
            Purchase Plan.

8.          In the event of my death, I hereby designate the following as my
            beneficiary(ies) to receive all payments and shares due me under the
            Employee Stock Purchase Plan:


NAME:  (Please print)
                     ----------------------------------------------------------
                             (First)         (Middle)            (Last)


- -------------------------------    ---------------------------------------------
Relationship

                                   ---------------------------------------------
                                                    (Address)



                                      -2-
<PAGE>   13

Employee's Social
Security Number:
                                   ---------------------------------------------



Employee's Address:
                                   ---------------------------------------------

                                   ---------------------------------------------

                                   ---------------------------------------------


I UNDERSTAND THAT THIS SUBSCRIPTION AGREEMENT SHALL REMAIN IN EFFECT THROUGHOUT
SUCCESSIVE OFFERING PERIODS UNLESS TERMINATED BY ME.



Dated:
      --------------------------   ---------------------------------------------
                                   Signature of Employee


                                   ---------------------------------------------
                                   Spouse's Signature (If beneficiary other 
                                     than spouse)



                                      -3-
<PAGE>   14

                                    EXHIBIT B


                          CARDIAC PATHWAYS CORPORATION

                        1998 EMPLOYEE STOCK PURCHASE PLAN

                              NOTICE OF WITHDRAWAL



            The undersigned participant in the Offering Period of the Cardiac
Pathways Corporation 1998 Employee Stock Purchase Plan which began on
____________, 19____ (the "Enrollment Date") hereby notifies the Company that he
or she hereby withdraws from the Offering Period. He or she hereby directs the
Company to pay to the undersigned as promptly as practicable all the payroll
deductions credited to his or her account with respect to such Offering Period.
The undersigned understands and agrees that his or her option for such Offering
Period will be automatically terminated. The undersigned understands further
that no further payroll deductions will be made for the purchase of shares in
the current Offering Period and the undersigned shall be eligible to participate
in succeeding Offering Periods only by delivering to the Company a new
Subscription Agreement.



                                         Name and Address of Participant:

                                         ------------------------------------


                                         ------------------------------------


                                         ------------------------------------


                                         Signature:


                                         ------------------------------------


                                         Date:
                                              -------------------------------


<PAGE>   1
                                                                     EXHIBIT 4.3


                          CARDIAC PATHWAYS CORPORATION
                                 1991 STOCK PLAN
                             (AS AMENDED APRIL 1996)
                        (AS FURTHER AMENDED OCTOBER 1997)
                        (AS FURTHER AMENDED OCTOBER 1998)
                       (AS FURTHER AMENDED NOVEMBER 1998)


        1.      PURPOSES OF THE PLAN. The purposes of this Stock Plan are to
attract and retain the best available personnel for positions of substantial
responsibility, to provide additional incentive to Employees and Consultants of
the Company and its Subsidiaries and to promote the success of the Company's
business. Options granted under the Plan may be incentive stock options (as
defined under Section 422 of the Code) or nonstatutory stock options, as
determined by the Administrator at the time of grant of an option and subject to
the applicable provisions of Section 422 of the Code, as amended, and the
regulations promulgated thereunder. Stock purchase rights may also be granted
under the Plan.

        2.      CERTAIN DEFINITIONS. As used herein, the following definitions
shall apply:

                (a)     "ADMINISTRATOR" means the Board or any of its Committees
appointed pursuant to Section 4 of the Plan.

                (b)     "BOARD" means the Board of Directors of the Company.

                (c)     "CODE" means the Internal Revenue Code of 1986, as
amended.

                (d)     "COMMITTEE" means the Committee appointed by the Board
of Directors in accordance with paragraph (a) of Section 4 of the Plan.

                (e)     "COMMON STOCK" means the Common Stock of the company.

                (f)     "COMPANY" means Cardiac Pathways Corporation, a
California corporation.

                (g)     "CONSULTANT" means any person, including an advisor, who
is engaged by the Company or any Parent or Subsidiary to render services and is
compensated for such services. The term Consultant shall not include directors
who are not compensated for their services or are paid only a director's fee by
the Company.

                (h)     "CONTINUOUS STATUS AS AN EMPLOYEE OR CONSULTANT" means
that the employment or consulting relationship with the Company, any Parent, or
Subsidiary, is not interrupted or terminated. Continuous Status as an Employee
or Consultant shall not be considered interrupted in the case of (i) any leave
of absence approved by the Company or (ii) transfers between locations of the
Company or between the Company, its Parent, any Subsidiary, or any successor. A


<PAGE>   2

leave of absence approved by the Company shall include sick leave, military
leave, or any other personal leave approved by an authorized representative of
the Company. For purposes of Incentive Stock Options, no such leave may exceed
ninety days, unless reemployment upon expiration of such leave is guaranteed by
statute or contract. If reemployment upon expiration of a leave of absence
approved by the Company is not so guaranteed, on the 181st day of such leave any
Incentive Stock Option held by the Optionee shall cease to be treated as an
Incentive Stock Option and shall be treated for tax purposes as a Nonstatutory
Stock Option.

                (i)     "EMPLOYEE" means any person, including officers and
directors, employed by the Company or any Parent or Subsidiary of the Company.
The payment of a director's fee by the Company shall not be sufficient to
constitute "employment" by the Company.

                (j)     "EXCHANGE ACT" means the Securities Exchange Act of
1934, as amended.

                (k)     "FAIR MARKET VALUE" means, as of any date, the value of
Common Stock determined as follows:

                        (i)     If the Common Stock is listed on any established
stock exchange or a national market system, including without limitation the
Nasdaq National Market or The Nasdaq SmallCap Market of The Nasdaq Stock Market,
its Fair Market Value shall be the closing sales price for such stock (or the
closing bid, if no sales were reported) as quoted on such exchange or system for
the last market trading day prior to the time of determination, as reported in
The Wall Street Journal or such other source as the Administrator deems
reliable;

                        (ii)    If the Common Stock is regularly quoted by a
recognized securities dealer but selling prices are not reported, the Fair
Market Value of a Share of Common Stock shall be the mean between the high bid
and low asked prices for the Common Stock on the last market trading day prior
to the day of determination, as reported in The Wall Street Journal or such
other source as the Administrator deems reliable;

                        (iii)   In the absence of an established market for the
Common Stock, the Fair Market Value shall be determined in good faith by the
Administrator.

                (l)     "INCENTIVE STOCK OPTION" means an Option intended to
qualify as an incentive stock option within the meaning of Section 422 of the
Code.

                (m)     "NONSTATUTORY STOCK OPTION" means an Option not intended
to qualify as an Incentive Stock Option.

                (n)     "OPTION" means a stock option granted pursuant to the
Plan.

                (o)     "OPTIONED STOCK" means the Common Stock subject to an
Option.

                (p)     "OPTIONEE" means an Employee or Consultant who receives
an Option.


                                      -2-
<PAGE>   3

                (q)     "PARENT" means a "parent corporation," whether now or
hereafter existing, as defined in Section 424(e) of the Code.

                (r)     "PLAN" means this 1991 Stock Plan.

                (s)     "RESTRICTED STOCK" means shares of Common Stock acquired
pursuant to a grant of a Stock Purchase Right under Section 11 below.

                (t)     "SHARE" means a share of the Common Stock, as adjusted
in accordance with Section 13 of the Plan.

                (u)     "SUBSIDIARY" means a "subsidiary corporation," whether
now or hereafter existing, as defined in Section 424(f) of the Code.

        3.      STOCK SUBJECT TO THE PLAN. Subject to the provisions of Section
14 of the Plan, the maximum aggregate number of shares which may be optioned and
sold under the Plan is 2,567,030 shares of Common Stock. The shares may be
authorized, but unissued, or re-acquired Common Stock.

                If an Option or Stock Purchase Right should expire or become
unexercisable for any reason without having been exercised in full, the
unpurchased Shares which were subject thereto shall, unless the Plan shall have
been terminated, become available for future grant under the Plan.

        4.      ADMINISTRATION OF THE PLAN.

                (a)     PROCEDURE.

                        (i)     MULTIPLE ADMINISTRATIVE BODIES. If permitted by
Rule 16b-3, the Plan may be administered by different bodies with respect to
directors, officers who are not directors, and Employees who are neither
directors nor officers.

                        (ii)    ADMINISTRATION WITH RESPECT TO DIRECTORS AND
OFFICERS SUBJECT TO SECTION 16(b). With respect to Option or Stock Purchase
Right grants made to Employees who are also officers or directors subject to
Section 16 of the Exchange Act, the Plan shall be administered by (A) the Board,
if the Board may administer the Plan in a manner complying with the rules under
Rule 16b-3 relating to the disinterested administration of employee benefit
plans under which Section 16(b) exempt discretionary grants and awards of equity
securities are to be made, or (B) a Committee designated by the Board to
administer the Plan, which Committee shall be constituted to comply with the
rules under Rule 16b-3 relating to the disinterested administration of employee
benefit plans under which Section 16(b) exempt discretionary grants and awards
of equity securities are to be made. Once appointed, such Committee shall
continue to serve in its designated capacity until otherwise directed by the
Board. From time to time the Board may increase the size of the Committee and
appoint additional members, remove members (with or without cause) and
substitute new members, fill vacancies (however caused), and remove all members
of the Committee and thereafter directly



                                      -3-
<PAGE>   4

administer the Plan, all to the extent permitted by the rules under Rule 16b-3
relating to the disinterested administration of employee benefit plans under
which Section 16(b) exempt discretionary grants and awards of equity securities
are to be made.

                        (iii)   ADMINISTRATION WITH RESPECT TO OTHER PERSONS.
With respect to Option or Stock Purchase Right grants made to Employees or
Consultants who are neither directors nor officers of the Company, the Plan
shall be administered by (A) the Board or (B) a Committee designated by the
Board, which committee shall be constituted to satisfy the legal requirements
relating to the administration of incentive stock plans of California corporate
and securities laws and the Code (the "Applicable Laws"). Once appointed, such
Committee shall serve in its designated capacity until otherwise directed by the
Board. The Board may increase the size of the Committee and appoint additional
members, remove members (with or without cause) and substitute new members, fill
vacancies (however caused), and remove all members of the Committee and
thereafter directly administer the Plan, all to the extent permitted by
Applicable Laws.

                (b)     POWERS OF THE ADMINISTRATOR. Subject to the provisions
of the Plan and in the case of a Committee, the specific duties delegated by the
Board to such Committee, the Administrator shall have the authority, in its
discretion:

                        (i)     to determine the Fair Market Value of the Common
Stock, in accordance with Section 2(k) of the Plan;

                        (ii)    to select the Consultants and Employees to whom
Options and Stock Purchase Rights may from time to time be granted hereunder;

                        (iii)   to determine whether and to what extent Options
and Stock Purchase Rights or any combination thereof, are granted hereunder;

                        (iv)    to determine the number of shares of Common
Stock to be covered by each such award granted hereunder;

                        (v)     to approve forms of agreement for use under the
Plan;

                        (vi)    to determine the terms and conditions, not
inconsistent with the terms of the Plan, of any award granted hereunder
(including, but not limited to, the share price and any restriction or
limitation or waiver of forfeiture restrictions regarding any Option or other
award and/or the shares of Common Stock relating thereto, based in each case on
such factors as the Administrator shall determine, in its sole discretion;

                        (vii)   to determine whether and under what
circumstances an Option may be settled in cash under subsection 10(f) instead of
Common Stock;

                        (viii)  to determine whether, to what extent and under
what circumstances Common Stock and other amounts payable with respect to an
award under this Plan shall be deferred


                                      -4-
<PAGE>   5

either automatically or at the election of the participant (including providing
for and determining the amount, if any, of any deemed earnings on any deferred
amount during any deferral period);

                        (ix)    to reduce the exercise price of any Option to
the then current Fair Market Value if the Fair Market Value of the Common Stock
covered by such Option shall have declined since the date the Option was
granted; provided, however, that the Administrator must seek the prior consent
of the Board of Directors and stockholders of the Company to effect such action;
and

                        (x)     to determine the terms and restrictions
applicable to Stock Purchase Rights and the Restricted Stock purchased by
exercising such Stock Purchase Rights.

                (c)     EFFECT OF COMMITTEE'S DECISION. All decisions,
determinations and interpretations of the Administrator shall be final and
binding on all Optionees and any other holders of any Options.

        5.      ELIGIBILITY. Nonstatutory Stock Options and Stock Purchase
Rights may be granted to Employees and Consultants. Incentive Stock Options may
be granted only to Employees. An Employee or Consultant who has been granted an
Option or Stock Purchase Right may, if he is otherwise eligible, be granted
additional Options or Stock Purchase Rights.

        6.      LIMITATIONS.

                (a)     Each Option shall be designated in the written option
agreement as either an Incentive Stock Option or a Nonstatutory Stock Option.
However, notwithstanding such designation, to the extent that the aggregate Fair
Market Value of the Shares with respect to which Incentive Stock Options are
exercisable for the first time by the Optionee during any calendar year (under
all plans of the Company and any Parent or Subsidiary) exceeds $100,000, such
Options shall be treated as Nonstatutory Stock Options. For purposes of this
Section 6(a), Incentive Stock Options shall be taken into account in the order
in which they were granted. The Fair Market Value of the Shares shall be
determined as of the time the Option with respect to such Shares is granted. If
an Option is granted hereunder that is part Incentive Stock Option and part
Nonstatutory Stock Option due to becoming first exercisable in any calendar year
in excess of $100,000, the Incentive Stock Option portion of such Option shall
become exercisable first in such calendar year, and the Nonstatutory Stock
Option portion shall commence becoming exercisable once the $100,000 limit has
been reached.

                (b)     Neither the Plan nor any Option or Stock Purchase Right
shall confer upon an Optionee any right with respect to continuing the
Optionee's employment or consulting relationship with the Company, nor shall
they interfere in any way with the Optionee's right or the Company's right to
terminate such employment or consulting relationship at any time, with or
without cause.

                (c)     The following limitations shall apply to grants of
Options and Stock Purchase Rights to Employees:

                                      -5-
<PAGE>   6


                        (i)     No Employee shall be granted, in any fiscal year
of the Company, Options to purchase more than 200,000 Shares.

                        (ii)    In connection with his or her initial
employment, an Employee may be granted Options to purchase up to an additional
100,000 Shares which shall not count against the limit set forth in subsection
(i) above.

                        (iii)   The foregoing limitations shall be adjusted
proportionately in connection with any change in the Company's capitalization as
described in Section 14.

                        (iv)    If an Option or Stock Purchase Right is
cancelled in the same fiscal year of the Company in which it was granted (other
than in connection with a transaction described in Section 14), the cancelled
Option or Stock Purchase Right will be counted against the limits set forth in
subsections (i) and (ii) above. For this purpose, if the exercise price of an
Option or Stock Purchase Right is reduced, the transaction will be treated as a
cancellation of the Option or Stock Purchase Right and the grant of a new Option
or Stock Purchase Right.

        7.      TERM OF PLAN. The Plan shall become effective upon the earlier
to occur of its adoption by the Board of Directors or its approval by the
stockholders of the Company as described in Section 20 of the Plan. It shall
continue in effect for a term of ten (10) years unless sooner terminated under
Section 16 of the Plan.

        8.      TERM OF OPTION. The term of each Option shall be the term stated
in the Option Agreement; provided, however, that in the case of an Incentive
Stock Option, the term shall be no more than ten (10) years from the date of
grant thereof or such shorter term as may be provided in the Option Agreement.
However, in the case of an Option granted to an Optionee who, at the time the
Option is granted, owns stock representing more than ten percent (10%) of the
voting power of all classes of stock of the Company or any Parent or Subsidiary,
the term of the Option shall be five (5) years from the date of grant thereof or
such shorter term as may be provided in the Option Agreement.

        9.      OPTION EXERCISE PRICE AND CONSIDERATION.

                (a)     The per share exercise price for the Shares to be issued
pursuant to exercise of an Option shall be such price as is determined by the
Administrator, but shall be subject to the following:

                        (i)     In the case of an INCENTIVE STOCK OPTION

                                (A)     granted to an Employee who, at the time
of the grant of such Incentive Stock Option, owns stock representing more than
ten percent (10%) of the voting power of all classes of stock of the Company or
any Parent or Subsidiary, the per Share exercise price shall be no less than
110% of the Fair Market Value per Share on the date of grant.


                                       -6-

<PAGE>   7



                                (B)     granted to any other Employee, the per
Share exercise price shall be no less than 100% of the Fair Market Value per
Share on the date of grant.

                        (ii)    In the case of a NONSTATUTORY STOCK OPTION, the
per Share exercise price shall be no less than 100% of the Fair Market Value per
Share on the date of grant.

                (b)     FORM OF CONSIDERATION. The Administrator shall determine
the acceptable form of consideration for exercising an Option, including the
method of payment. In the case of an Incentive Stock Option, the Administrator
shall determine the acceptable form of consideration at the time of grant. Such
consideration may consist entirely of:

                        (i)     cash;

                        (ii)    check;

                        (iii)   promissory note;

                        (iv)    other Shares which (A) in the case of Shares
acquired upon exercise of an option, have been owned by the Optionee for more
than six months on the date of surrender, and (B) have a Fair Market Value on
the date of surrender equal to the aggregate exercise price of the Shares as to
which said Option shall be exercised;

                        (v)     delivery of a properly executed exercise notice
together with such other documentation as the Administrator and the broker, if
applicable, shall require to effect an exercise of the Option and delivery to
the Company of the sale or loan proceeds required to pay the exercise price;

                        (vi)    a reduction in the amount of any Company
liability to the Optionee, including any liability attributable to the
Optionee's participation in any Company-sponsored deferred compensation program
or arrangement;

                        (vii)   any combination of the foregoing methods of
payment; or

                        (viii)  such other consideration and method of payment
for the issuance of Shares to the extent permitted by Applicable Laws.

        10.     EXERCISE OF OPTION.

                (a)     PROCEDURE FOR EXERCISE; RIGHTS AS A STOCKHOLDER. Any
Option granted hereunder shall be exercisable at such times and under such
conditions as determined by the Administrator, including performance criteria
with respect to the Company and/or the Optionee, and as shall be permissible
under the terms of the Plan.

                        An Option may not be exercised for a fraction of a
Share.


                                      -7-
<PAGE>   8

                        An Option shall be deemed to be exercised when written
notice of such exercise has been given to the Company in accordance with the
terms of the Option by the person entitled to exercise the Option, and full
payment for the Shares with respect to which the Option is exercised has been
received by the Company. Full payment may, as authorized by the Administrator,
consist of any consideration and method of payment allowable under Section 9(b)
of the Plan. Until the issuance (as evidenced by the appropriate entry on the
books of the Company or of a duly authorized transfer agent of the Company) of
the stock certificate evidencing such Shares, no right to vote or receive
dividends or any other rights as a stockholder shall exist with respect to the
Optioned Stock, notwithstanding the exercise of the Option. The Company shall
issue (or cause to be issued) such stock certificate promptly upon exercise of
the Option. No adjustment will be made for a dividend or other right for which
the record date is prior to the date the stock certificate is issued, except as
provided in Section 14 of the Plan.

                        Exercise of an Option in any manner shall result in a
decrease in the number of Shares which thereafter may be available, both for
purposes of the Plan and for sale under the Option, by the number of Shares as
to which the Option is exercised.

                (b)     TERMINATION OF EMPLOYMENT OR CONSULTING RELATIONSHIP.
Upon termination of an Optionee's Continuous Status as an Employee, other than
upon the Optionee's death or Disability, the Optionee may exercise his or her
Option within such period of time as is specified in the option agreement to the
extent that he or she is entitled to exercise it on the date of termination (but
in no event later than the expiration of the term of such Option). In the
absence of a specified time in the option agreement, the Option shall remain
exercisable for three (3) months following the Optionee's termination. In the
case of an Incentive Stock Option, such period of time for exercise shall not
exceed three (3) months from the date of termination. If, on the date of
termination, the Optionee is not entitled to exercise his or her entire Option,
the Shares covered by the unexercisable portion of the Option shall revert to
the Plan. If, after termination, the Optionee does not exercise his or her
Option within the time specified by the Administrator, the Option shall
terminate, and the Shares covered by such Option shall revert to the Plan.

                Notwithstanding the above, in the event of an Optionee's change
in status from Consultant to Employee or Employee to Consultant, the Optionee's
Continuous Status as an Employee or Consultant shall not automatically terminate
solely as a result of such change in status. In such event, an Incentive Stock
Option held by the Optionee shall cease to be treated as an Incentive Stock
Option and shall be treated for tax purposes as a Nonstatutory Stock Option
beginning three months and one day following such change of status.

                (c)     DISABILITY OF OPTIONEE. Upon termination of an
Optionee's Continuous Status as an Employee or Consultant as a result of the
Optionee's total and permanent disability (as defined in Section 22(e)(3) of the
Code), the Optionee may exercise his or her Option at any time within twelve
(12) months from the date of termination, but only to the extent that the
Optionee is entitled to exercise it on the date of termination (and in no event
later than the expiration of the term of the Option). If, on the date of
termination, the Optionee is not entitled to exercise his or her entire Option,
the Shares covered by the unexercisable portion of the Option shall revert to
the Plan. If,


                                      -8-
<PAGE>   9

after termination, the Optionee does not exercise his or her Option within the
time specified herein, the Option shall terminate, and the Shares covered by
such Option shall revert to the Plan.

                (d)     DEATH OF OPTIONEE. Upon the death of an Optionee, the
Option may be exercised at any time within twelve (12) months following the date
of death (but in no event later than the expiration of the term of such Option),
by the Optionee's estate or by a person who acquires the right to exercise the
Option by bequest or inheritance, but only to the extent that the Optionee would
have been entitled to exercise the Option on the date of death. If, at the time
of death, the Optionee is not entitled to exercise his or her entire Option, the
Shares covered by the unexercisable portion of the Option shall immediately
revert to the Plan. If the Optionee's estate or the person who acquires the
right to exercise the Option by bequest or inheritance does not exercise the
Option within the time specified herein, the Option shall terminate, and the
Shares covered by such Option shall revert to the Plan.

                (e)     RULE 16b-3. Options granted to persons subject to
Section 16 of the Exchange Act must comply with Rule 16b-3 and shall contain
such additional conditions or restrictions as may be required thereunder to
qualify for the maximum exemption from Section 16 of the Exchange Act with
respect to Plan transactions.

                (f)     BUYOUT PROVISIONS. The Administrator may at any time
offer to buy out for a payment in cash or Shares, an Option previously granted,
based on such terms and conditions as the Administrator shall establish and
communicate to the Optionee at the time that such offer is made.

        11.     STOCK PURCHASE RIGHTS.

                (a)     RIGHTS TO PURCHASE. Stock Purchase Rights may be issued
either alone, in addition to, or in tandem with other awards granted under the
Plan and/or cash awards made outside of the Plan. After the Administrator
determines that it will offer Stock Purchase Rights under the Plan, it shall
advise the offeree in writing of the terms, conditions and restrictions related
to the offer, including the number of Shares that such person shall be entitled
to purchase, the price to be paid (which price shall not be less than 50% of the
Fair Market Value of the Shares as of the date of the offer), and the time
within which such person must accept such offer, which shall in no event exceed
thirty (30) days from the date upon which the Administrator made the
determination to grant the Stock Purchase Right. The offer shall be accepted by
execution of a Restricted Stock purchase agreement in the form determined by the
Administrator. Shares purchased pursuant to the grant of a Stock Purchase Right
shall be referred to herein as "Restricted Stock."

                (b)     REPURCHASE OPTION. Unless the Administrator determines
otherwise, the Restricted Stock purchase agreement shall grant the Company a
repurchase option exercisable upon the voluntary or involuntary termination of
the purchaser's employment with the Company for any reason (including death or
Disability). The purchase price for Shares repurchased pursuant to the
Restricted Stock purchase agreement shall be the original price paid by the
purchaser and may be paid by cancellation of any indebtedness of the purchaser
to the Company. The repurchase option shall lapse at such rate as the Committee
may determine.


                                      -9-
<PAGE>   10

                (c)     RULE 16B-3. Stock Purchase Rights granted to persons
subject to Section 16 of the Exchange Act, and Shares purchased by such persons
in connection with Stock Purchase Rights, shall be subject to any restrictions
applicable thereto in compliance with Rule 16b-3. Such persons may only purchase
Shares pursuant to the grant of a Stock Purchase Right, and may only sell Shares
purchased pursuant to the grant of a Stock Purchase Right, during such time or
times as are permitted by Rule 16b-3.

                (d)     OTHER PROVISIONS. The Restricted Stock purchase
agreement shall contain such other terms, provisions and conditions not
inconsistent with the Plan as may be determined by the Administrator in its sole
discretion. In addition, the provisions of Restricted Stock purchase agreements
need not be the same with respect to each purchaser.

                (e)     RIGHTS AS A STOCKHOLDER. Once the Stock Purchase Right
is exercised, the purchaser shall have the rights equivalent to those of a
stockholder, and shall be a stockholder when his or her purchase is entered upon
the records of the duly authorized transfer agent of the Company. No adjustment
will be made for a dividend or other right for which the record date is prior to
the date the Stock Purchase Right is exercised, except as provided in Section 14
of the Plan.

        12.     NON-TRANSFERABILITY OF OPTIONS AND STOCK PURCHASE RIGHTS. An
Option or Stock Purchase Right may not be sold, pledged, assigned, hypothecated,
transferred, or disposed of in any manner other than by will or by the laws of
descent or distribution and may be exercised, during the lifetime of the
Optionee, only by the Optionee.

        13.     STOCK WITHHOLDING TO SATISFY WITHHOLDING TAX OBLIGATIONS. At the
discretion of the Administrator, Optionees may satisfy withholding obligations
as provided in this paragraph. When an Optionee incurs tax liability in
connection with an Option or Stock Purchase Right, which tax liability is
subject to tax withholding under applicable tax laws, and the Optionee is
obligated to pay the Company an amount required to be withheld under applicable
tax laws, the Optionee may satisfy the withholding tax obligation by electing to
have the Company withhold from the Shares to be issued upon exercise of the
Option, or the Shares to be issued in connection with the Stock Purchase Right,
if any, that number of Shares having a Fair Market Value equal to the amount
required to be withheld. The Fair Market Value of the Shares to be withheld
shall be determined on the date that the amount of tax to be withheld is to be
determined (the "Tax Date").

        All elections by an Optionee to have Shares withheld for this purpose
shall be made in writing in a form acceptable to the Administrator and shall be
subject to the following restrictions:

                (a)     the election must be made on or prior to the applicable
Tax Date;

                (b)     once made, the election shall be irrevocable as to the
particular Shares of the Option or Right as to which the election is made;

                (c)     all elections shall be subject to the consent or
disapproval of the Administrator;



                                      -10-
<PAGE>   11

                (d)     if the Optionee is subject to Section 16 of the Exchange
Act, the election must comply with the applicable provisions of Rule 16b-3 and
shall be subject to such additional conditions or restrictions as may be
required thereunder to qualify for the maximum exemption from Section 16 of the
Exchange Act with respect to Plan transactions.

            In the event the election to have Shares withheld is made by an
Optionee and the Tax Date is deferred under Section 83 of the Code because no
election is filed under Section 83(b) of the Code, the Optionee shall receive
the full number of Shares with respect to which the Option or Stock Purchase
Right is exercised, but such Optionee shall be unconditionally obligated to
tender back to the Company the proper number of Shares on the Tax Date.

        14.     ADJUSTMENTS UPON CHANGES IN CAPITALIZATION, DISSOLUTION, MERGER
OR ASSET SALE.

                (a)     CHANGES IN CAPITALIZATION. Subject to any required
action by the stockholders of the Company, the number of shares of Common Stock
covered by each outstanding Option and Stock Purchase Right, and the number of
shares of Common Stock which have been authorized for issuance under the Plan
but as to which no Options or Stock Purchase Rights have yet been granted or
which have been returned to the Plan upon cancellation or expiration of an
Option or Stock Purchase Right, as well as the price per share of Common Stock
covered by each such outstanding Option or Stock Purchase Right, shall be
proportionately adjusted for any increase or decrease in the number of issued
shares of Common Stock resulting from a stock split, reverse stock split, stock
dividend, combination or reclassification of the Common Stock, or any other
increase or decrease in the number of issued shares of Common Stock effected
without receipt of consideration by the Company; provided, however, that
conversion of any convertible securities of the Company shall not be deemed to
have been "effected without receipt of consideration." Such adjustment shall be
made by the Board, whose determination in that respect shall be final, binding
and conclusive. Except as expressly provided herein, no issuance by the Company
of shares of stock of any class, or securities convertible into shares of stock
of any class, shall affect, and no adjustment by reason thereof shall be made
with respect to, the number or price of shares of Common Stock subject to an
Option or Stock Purchase Right.

                (b)     DISSOLUTION OR LIQUIDATION. In the event of the proposed
dissolution or liquidation of the Company, the Administrator shall notify each
Optionee as soon as practicable prior to the effective date of such proposed
transaction. The Administrator in its discretion may provide for an Optionee to
have the right to exercise his or her Option until ten (10) days prior to such
transaction as to all of the Optioned Stock covered thereby, including Shares as
to which the Option would not otherwise be exercisable. In addition, the
Administrator may provide that any Company repurchase option applicable to any
Shares purchased upon exercise of an Option shall lapse as to all such Shares,
provided the proposed dissolution or liquidation takes place at the time and in
the manner contemplated. To the extent it has not been previously exercised, an
Option will terminate immediately prior to the consummation of such proposed
action.

                (c)     MERGER OR ASSET SALE. In the event of a merger of the
Company with or into another corporation, or the sale of substantially all of
the assets of the Company, each outstanding


                                      -11-
<PAGE>   12

Option and Stock Purchase Right shall be assumed or an equivalent option or
right substituted by the successor corporation or a Parent or Subsidiary of the
successor corporation. In the event that the successor corporation refuses to
assume or substitute for the Option or Stock Purchase Right, the Optionee shall
have the right to exercise the Option or Stock Purchase Right as to all of the
Optioned Stock, including Shares as to which it would not otherwise be
exercisable. If an Option or Stock Purchase Right is exercisable in lieu of
assumption or substitution in the event of a merger or sale of assets, the
Administrator shall notify the Optionee that the Option or Stock Purchase Right
shall be fully exercisable for a period of fifteen (15) days from the date of
such notice, and the Option or Stock Purchase Right shall terminate upon the
expiration of such period. For the purposes of this paragraph, the Option or
Stock Purchase Right shall be considered assumed if, following the merger or
sale of assets, the option or right confers the right to purchase or receive,
for each Share of Optioned Stock subject to the Option or Stock Purchase Right
immediately prior to the merger or sale of assets, the consideration (whether
stock, cash, or other securities or property) received in the merger or sale of
assets by holders of Common Stock for each Share held on the effective date of
the transaction (and if holders were offered a choice of consideration, the type
of consideration chosen by the holders of a majority of the outstanding Shares);
provided, however, that if such consideration received in the merger or sale of
assets was not solely common stock of the successor corporation or its Parent,
the Administrator may, with the consent of the successor corporation, provide
for the consideration to be received upon the exercise of the Option or Stock
Purchase Right, for each Share of Optioned Stock subject to the Option or Stock
Purchase Right, to be solely common stock of the successor corporation or its
Parent equal in fair market value to the per share consideration received by
holders of Common Stock in the merger or sale of assets.

        15.     TIME OF GRANTING OPTIONS. The date of grant of an Option or
Stock Purchase Right shall, for all purposes, be the date on which the
Administrator makes the determination granting such Option or Stock Purchase
Right, or such other date as is determined by the Board. Notice of the
determination shall be given to each Employee or Consultant to whom an Option or
Stock Purchase Right is so granted within a reasonable time after the date of
such grant.

        16.     AMENDMENT AND TERMINATION OF THE PLAN. The Board may at any time
amend, alter, suspend or discontinue the Plan, but no amendment, alteration,
suspension or discontinuation shall be made which would impair the rights of any
Optionee under any grant theretofore made, without his or her consent. In
addition, to the extent necessary and desirable to comply with Rule 16b-3 under
the Exchange Act or with Section 422 of the Code (or any other applicable law or
regulation, including the requirements of the NASD of an established stock
exchange), the Company shall obtain stockholder approval of any Plan amendment
in such a manner and to such a degree as required.

        17.     CONDITIONS UPON ISSUANCE OF SHARES. Shares shall not be issued
pursuant to the exercise of an Option unless the exercise of such Option and the
issuance and delivery of such Shares pursuant thereto shall comply with all
relevant provisions of law, including, without limitation, the Securities Act of
1933, as amended, the Exchange Act, the rules and regulations promulgated
thereunder, and the requirements of any stock exchange upon which the Shares may
then be listed,


                                      -12-
<PAGE>   13

and shall be further subject to the approval of counsel for the Company with
respect to such compliance.

        18.     RESERVATION OF SHARES. The Company, during the term of this
Plan, shall at all times reserve and keep available such number of Shares as
shall be sufficient to satisfy the requirements of the Plan.

                The inability of the Company to obtain authority from any
regulatory body having jurisdiction, which authority is deemed by the Company's
counsel to be necessary to the lawful issuance and sale of any Shares hereunder,
shall relieve the Company of any liability in respect of the failure to issue or
sell such Shares as to which such requisite authority shall not have been
obtained.

        19.     AGREEMENTS. Options and Stock Purchase Rights shall be evidenced
by written agreements in such form as the Board shall approve from time to time.

        20.     STOCKHOLDER APPROVAL. Continuance of the Plan shall be subject
to approval by the stockholders of the Company within twelve (12) months before
or after the date the Plan is adopted. Such stockholder approval shall be
obtained in the degree and manner required under applicable state and federal
law. In addition, should the Administrator determine that it is appropriate to
reduce the exercise price of any Option pursuant to Section 4(b)(ix) of the
Plan, the Administrator shall seek the prior consent of the stockholders to
effect such action.


                                      -13-

<PAGE>   1
                                                                     EXHIBIT 4.4

                          CARDIAC PATHWAYS CORPORATION

                            1996 DIRECTOR OPTION PLAN


            1. Purposes of the Plan. The purposes of this 1996 Director Option
Plan are to attract and retain the best available personnel for service as
Outside Directors (as defined herein) of the Company, to provide additional
incentive to the Outside Directors of the Company to serve as Directors, and to
encourage their continued service on the Board.

                        All options granted hereunder shall be nonstatutory
stock options.

            2. Definitions. As used herein, the following definitions shall
apply:

                        (a) Board" means the Board of Directors of the Company.

                        (b) "Code" means the Internal Revenue Code of 1986, as
amended.

                        (c) "Common Stock" means the Common Stock of the
Company.

                        (d) "Company" means Cardiac Pathways Corporation, a
California corporation.

                        (e) "Director" means a member of the Board.

                        (f) "Employee" means any person, including officers and 
Directors, employed by the Company or any Parent or Subsidiary of the Company.
The payment of a Director's fee by the Company shall not be sufficient in and of
itself to constitute "employment" by the Company.

                        (g) "Exchange Act" means the Securities Exchange Act of
1934, as amended.

                        (h) "Fair Market Value" means, as of any date, the 
value of Common Stock determined as follows:

                                    (i) If the Common Stock is listed on any 
established stock exchange or a national market system, including without
limitation the Nasdaq National Market or The Nasdaq SmallCap Market of The
Nasdaq Stock Market, its Fair Market Value shall be the closing sales price for
such stock (or the closing bid, if no sales were reported) as quoted on such
exchange or system for the last market trading day prior to the time of
determination, as reported in The Wall Street Journal or such other source as
the Administrator deems reliable;

                                    (ii) If the Common Stock is regularly
quoted by a recognized securities dealer but selling prices are not reported,
the Fair Market Value of a Share of Common Stock shall be the mean between the
high bid and low asked prices for the Common Stock on the date of

                                       -1-

<PAGE>   2
determination, as reported in The Wall Street Journal or such other source as
the Board deems reliable, or;

                                    (iii) In the absence of an established
market for the Common Stock, the Fair Market Value thereof shall be determined
in good faith by the Board.

                        (i) "Inside Director" means a Director who is an
Employee.

                        (j) "Option" means a stock option granted pursuant to
the Plan.

                        (k) "Optioned Stock" means the Common Stock subject to
an Option.

                        (l) "Optionee" means a Director who holds an Option.

                        (m) "Outside Director" means a Director who is not an
Employee.

                        (n) "Parent" means a "parent corporation," whether now 
or hereafter existing, as defined in Section 424(e) of the Code.

                        (o) "Plan" means this 1996 Director Option Plan.

                        (p) "Share" means a share of the Common Stock, as 
adjusted in accordance with Section 10 of the Plan.

                        (q)  "Subsidiary" means a "subsidiary corporation," 
whether now or hereafter existing, as defined in Section 424(f) of the Internal
Revenue Code of 1986.

            3. Stock Subject to the Plan. Subject to the provisions of Section
10 of the Plan, the maximum aggregate number of Shares which may be optioned and
sold under the Plan is 60,000 Shares of Common Stock (the "Pool"). The Shares
may be authorized, but unissued, or reacquired Common Stock.
            
               If an Option expires or becomes unexercisable without having been
exercised in full, the unpurchased Shares which were subject thereto shall
become available for future grant or sale under the Plan (unless the Plan has
terminated). Shares that have actually been issued under the Plan shall not be
returned to the Plan and shall not become available for future distribution
under the Plan.

            4. Administration and Grants of Options under the Plan.

                        (a) Procedure for Grants.  The provisions set forth in 
this Section 4(a) shall not be amended more than once every six months, other
than to comport with changes in the Code, the Employee Retirement Income
Security Act of 1974, as amended, or the rules thereunder. All grants of Options
to Outside Directors under this Plan shall be automatic and nondiscretionary and
shall be made strictly in accordance with the following provisions:

                                       -2-

<PAGE>   3
                                    (i) No person shall have any discretion to 
select which Outside Directors shall be granted Options or to determine the
number of Shares to be covered by Options granted to Outside Directors.

                                    (ii) Each Outside Director who is neither 
affiliated with or nominated by a shareholder that owns one percent (1%) or more
of the outstanding capital stock of the Company (an "Unaffiliated Outside
Director") shall automatically be granted an Option to purchase 13,000 Shares
(the "First Option") on the date on which the later of the following events
occurs: (A) the effective date of this Plan, as determined in accordance with
Section 6 hereof, or (B) the date on which such person first becomes an Outside
Director, whether through election by the shareholders of the Company or
appointment by the Board to fill a vacancy. No Inside Director who ceases to be
an Inside Director but who remains a Director shall receive a First Option. No
Outside Director who upon first becoming an Outside Director is not an
Unaffiliated Outside Director but who subsequently becomes an Unaffiliated
Outside Director shall thereby become eligible to receive a First Option.

                                    (iii) Each Outside Director, whether or not
an Unaffiliated Outside Director, shall be automatically granted an Option to
purchase 700 Shares (a "Subsequent Option") each year on the date of the annual
meeting of the shareholders of the Company, provided he or she is then an
Outside Director and if as of such date, he or she shall have served on the
Board for at least the preceding six (6) months.

                                    (iv) Notwithstanding the provisions of 
subsections (ii) and (iii) hereof, any exercise of an Option granted before the
Company has obtained shareholder approval of the Plan in accordance with Section
16 hereof shall be conditioned upon obtaining such shareholder approval of the
Plan in accordance with Section 16 hereof.

                                    (v) The terms of a First Option granted 
hereunder shall be as follows:

                                        (A) the term of the First Option shall 
be ten (10) years.

                                        (B) the First Option shall be 
exercisable only while the Outside Director remains a Director of the Company,
except as set forth in Sections 8 and 10 hereof.

                                        (C) the exercise price per Share shall 
be 100% of the Fair Market Value per Share on the date of grant of the First
Option. In the event that the date of grant of the First Option is not a trading
day, the exercise price per Share shall be the Fair Market Value on the next
trading day immediately following the date of grant of the First Option.

                                       (D) subject to Section 10 hereof, the 
First Option shall become exercisable as to twenty-five percent (25%) of the
Shares subject to the First Option one (1) year after its date of grant, and as
to an additional one forty-eighth (1/48th) of the shares at the end of each
month thereafter, provided that the Optionee continues to serve as a Director on
such dates.

                                       -3-
<PAGE>   4
                                    (vi) The terms of a Subsequent Option 
granted hereunder shall be as follows:

                                         (A) the term of the Subsequent Option 
shall be ten (10) years.

                                         (B) the Subsequent Option shall be 
exercisable only while the Outside Director remains a Director of the Company,
except as set forth in Sections 8 and 10 hereof.

                                         (C) the exercise price per Share shall 
be 100% of the Fair Market Value per Share on the date of grant of the
Subsequent Option. In the event that the date of grant of the Subsequent Option
is not a trading day, the exercise price per Share shall be the Fair Market
Value on the next trading day immediately following the date of grant of the
Subsequent Option.

                                         (D) subject to Section 10 hereof, the 
Subsequent Option shall become exercisable as to one-eighth (1/8th) of the
Shares subject to the Subsequent Option six (6) months after its date of grant,
and as to an additional one forty-eighth (1/48th) at the end of each month
thereafter, provided that the Optionee continues to serve as a Director on such
dates.

                                    (vii) In the event that any Option granted
under the Plan would cause the number of Shares subject to outstanding Options
plus the number of Shares previously purchased under Options to exceed the Pool,
then the remaining Shares available for Option grant shall be granted under
Options to the Outside Directors on a pro rata basis. No further grants shall be
made until such time, if any, as additional Shares become available for grant
under the Plan through action of the Board or the shareholders to increase the
number of Shares which may be issued under the Plan or through cancellation or
expiration of Options previously granted hereunder.

            5. Eligibility. Options may be granted only to Outside Directors.
All Options shall be automatically granted in accordance with the terms set
forth in Section 4 hereof.

              The Plan shall not confer upon any Optionee any right with
respect to continuation of service as a Director or nomination to serve as a
Director, nor shall it interfere in any way with any rights which the Director
or the Company may have to terminate the Director's relationship with the
Company at any time.

            6. Term of Plan. The Plan shall become effective upon the earlier to
occur of its adoption by the Board or its approval by the shareholders of the
Company as described in Section 16 of the Plan. It shall continue in effect for
a term of ten (10) years unless sooner terminated under Section 11 of the Plan.

            7. Form of Consideration. The consideration to be paid for the
Shares to be issued upon exercise of an Option, including the method of payment,
shall consist of (i) cash, (ii) check, (iii) other shares which (x) in the case
of Shares acquired upon exercise of an Option, have been owned by the Optionee
for more than six (6) months on the date of surrender, and (y) have a Fair
Market Value on the date of surrender equal to the aggregate exercise price of
the Shares as to which said Option shall

                                       -4-

<PAGE>   5

be exercised, (iv) delivery of a properly executed exercise notice together with
such other documentation as the Company and the broker, if applicable, shall
require to effect an exercise of the Option and delivery to the Company of the
sale or loan proceeds required to pay the exercise price, or (v) any combination
of the foregoing methods of payment.

            8. Exercise of Option.

                        (a) Procedure for Exercise; Rights as a Shareholder. 
Any Option granted hereunder shall be exercisable at such times as are set forth
in Section 4 hereof; provided, however, that no Options shall be exercisable
until shareholder approval of the Plan in accordance with Section 16 hereof has
been obtained.

                        An Option may not be exercised for a fraction of a
Share.

                        An Option shall be deemed to be exercised when written
notice of such exercise has been given to the Company in accordance with the
terms of the Option by the person entitled to exercise the Option and full
payment for the Shares with respect to which the Option is exercised has been
received by the Company. Full payment may consist of any consideration and
method of payment allowable under Section 7 of the Plan. Until the issuance (as
evidenced by the appropriate entry on the books of the Company or of a duly
authorized transfer agent of the Company) of the stock certificate evidencing
such Shares, no right to vote or receive dividends or any other rights as a
shareholder shall exist with respect to the Optioned Stock, notwithstanding the
exercise of the Option. A share certificate for the number of Shares so acquired
shall be issued to the Optionee as soon as practicable after exercise of the
Option. No adjustment shall be made for a dividend or other right for which the
record date is prior to the date the stock certificate is issued, except as
provided in Section 10 of the Plan.

                        Exercise of an Option in any manner shall result in a 
decrease in the number of Shares which thereafter may be available, both for
purposes of the Plan and for sale under the Option, by the number of Shares as
to which the Option is exercised.

                        (b) Rule 16b-3. Options granted to Outside Directors
must comply with the applicable provisions of Rule 16b-3 promulgated under the
Exchange Act or any successor thereto and shall contain such additional
conditions or restrictions as may be required thereunder to qualify Plan
transactions, and other transactions by Outside Directors that otherwise could
be matched with Plan transactions, for the maximum exemption from Section 16 of
the Exchange Act.

                        (c) Termination of Continuous Status as a Director.  
Subject to Section 10 hereof, in the event an Optionee's status as a Director
terminates (other than upon the Optionee's death or total and permanent
disability (as defined in Section 22(e)(3) of the Code)), the Optionee may
exercise his or her Option, but only within three (3) months following the date
of such termination, and only to the extent that the Optionee was entitled to
exercise it on the date of such termination (but in no event later than the
expiration of its ten (10) year term). To the extent that the Optionee was not
entitled to exercise an Option on the date of such termination, and to the
extent that the

                                       -5-

<PAGE>   6

Optionee does not exercise such Option (to the extent otherwise so entitled)
within the time specified herein, the Option shall terminate.

                        (d) Disability of Optionee.  In the event Optionee's
status as a Director terminates as a result of total and permanent disability
(as defined in Section 22(e)(3) of the Code), the Optionee may exercise his or
her Option, but only within twelve (12) months following the date of such
termination, and only to the extent that the Optionee was entitled to exercise
it on the date of such termination (but in no event later than the expiration of
its ten (10) year term). To the extent that the Optionee was not entitled to
exercise an Option on the date of termination, or if he or she does not exercise
such Option (to the extent otherwise so entitled) within the time specified
herein, the Option shall terminate.

                        (e) Death of Optionee.  In the event of an Optionee's 
death, the Optionee's estate or a person who acquired the right to exercise the
Option by bequest or inheritance may exercise the Option, but only within twelve
(12) months following the date of death, and only to the extent that the
Optionee was entitled to exercise it on the date of death (but in no event later
than the expiration of its ten (10) year term). To the extent that the Optionee
was not entitled to exercise an Option on the date of death, and to the extent
that the Optionee's estate or a person who acquired the right to exercise such
Option does not exercise such Option (to the extent otherwise so entitled)
within the time specified herein, the Option shall terminate.

            9. Non-Transferability of Options. The Option may not be sold,
pledged, assigned, hypothecated, transferred, or disposed of in any manner other
than by will or by the laws of descent or distribution and may be exercised,
during the lifetime of the Optionee, only by the Optionee.

            10. Adjustments Upon Changes in Capitalization, Dissolution, Merger 
or Asset Sale.

                        (a) Changes in Capitalization.  Subject to any required 
action by the shareholders of the Company, the number of Shares covered by each
outstanding Option, the number of Shares which have been authorized for issuance
under the Plan but as to which no Options have yet been granted or which have
been returned to the Plan upon cancellation or expiration of an Option, as well
as the price per Share covered by each such outstanding Option, and the number
of Shares issuable pursuant to the automatic grant provisions of Section 4
hereof shall be proportionately adjusted for any increase or decrease in the
number of issued Shares resulting from a stock split, reverse stock split, stock
dividend, combination or reclassification of the Common Stock, or any other
increase or decrease in the number of issued Shares effected without receipt of
consideration by the Company; provided, however, that conversion of any
convertible securities of the Company shall not be deemed to have been "effected
without receipt of consideration." Except as expressly provided herein, no
issuance by the Company of shares of stock of any class, or securities
convertible into shares of stock of any class, shall affect, and no adjustment
by reason thereof shall be made with respect to, the number or price of Shares
subject to an Option.


                                       -6-

<PAGE>   7
                        (b) Dissolution or Liquidation.  In the event of the 
proposed dissolution or liquidation of the Company, to the extent that an Option
has not been previously exercised, it shall terminate immediately prior to the
consummation of such proposed action.

                        (c) Merger or Asset Sale.  In the event of a merger of 
the Company with or into another corporation or the sale of substantially all of
the assets of the Company, outstanding Options may be assumed or equivalent
options may be substituted by the successor corporation or a Parent or
Subsidiary thereof (the "Successor Corporation"). If an Option is assumed or
substituted for, the Option or equivalent option shall continue to be
exercisable as provided in Section 4 hereof for so long as the Optionee serves
as a Director or a director of the Successor Corporation. Following such
assumption or substitution, if the Optionee's status as a Director or director
of the Successor Corporation, as applicable, is terminated other than upon a
voluntary resignation by the Optionee, the Option or option shall become fully
exercisable, including as to Shares for which it would not otherwise be
exercisable. Thereafter, the Option or option shall remain exercisable in
accordance with Sections 8(c) through (e) above.

            If the Successor Corporation does not assume an outstanding Option
or substitute for it an equivalent option, the Option shall become fully vested
and exercisable, including as to Shares for which it would not otherwise be
exercisable. In such event the Board shall notify the Optionee that the Option
shall be fully exercisable for a period of thirty (30) days from the date of
such notice, and upon the expiration of such period the Option shall terminate.

            For the purposes of this Section 10(c), an Option shall be
considered assumed if, following the merger or sale of assets, the Option
confers the right to purchase or receive, for each Share of Optioned Stock
subject to the Option immediately prior to the merger or sale of assets, the
consideration (whether stock, cash, or other securities or property) received in
the merger or sale of assets by holders of Common Stock for each Share held on
the effective date of the transaction (and if holders were offered a choice of
consideration, the type of consideration chosen by the holders of a majority of
the outstanding Shares).

            11. Amendment and Termination of the Plan.

                        (a) Amendment and Termination.  Except as set forth in 
Section 4, the Board may at any time amend, alter, suspend, or discontinue the
Plan, but no amendment, alteration, suspension, or discontinuation shall be made
which would impair the rights of any Optionee under any grant theretofore made,
without his or her consent. In addition, to the extent necessary and desirable
to comply with Rule 16b-3 under the Exchange Act (or any other applicable law or
regulation), the Company shall obtain shareholder approval of any Plan amendment
in such a manner and to such a degree as required.

                        (b) Effect of Amendment or Termination.  Any such 
amendment or termination of the Plan shall not affect Options already granted
and such Options shall remain in full force and effect as if this Plan had not
been amended or terminated.

                                       -7-

<PAGE>   8
            12. Time of Granting Options. The date of grant of an Option shall,
for all purposes, be the date determined in accordance with Section 4 hereof.

            13. Conditions Upon Issuance of Shares. Shares shall not be issued
pursuant to the exercise of an Option unless the exercise of such Option and the
issuance and delivery of such Shares pursuant thereto shall comply with all
relevant provisions of law, including, without limitation, the Securities Act of
1933, as amended, the Exchange Act, the rules and regulations promulgated there
under, state securities laws, and the requirements of any stock exchange upon
which the Shares may then be listed, and shall be further subject to the
approval of counsel for the Company with respect to such compliance.

        As a condition to the exercise of an Option, the Company may require the
person exercising such Option to represent and warrant at the time of any such
exercise that the Shares are being purchased only for investment and without any
present intention to sell or distribute such Shares, if, in the opinion of
counsel for the Company, such a representation is required by any of the
aforementioned relevant provisions of law.

        Inability of the Company to obtain authority from any regulatory body
having jurisdiction, which authority is deemed by the Company's counsel to be
necessary to the lawful issuance and sale of any Shares hereunder, shall relieve
the Company of any liability in respect of the failure to issue or sell such
Shares as to which such requisite authority shall not have been obtained.

            14. Reservation of Shares. The Company, during the term of this
Plan, will at all times reserve and keep available such number of Shares as
shall be sufficient to satisfy the requirements of the Plan.

            15. Option Agreement. Options shall be evidenced by written option
agreements in such form as the Board shall approve.

            16. Shareholder Approval. Continuance of the Plan shall be subject
to approval by the shareholders of the Company at or prior to the first annual
meeting of shareholders held subsequent to the granting of an Option hereunder.
Such shareholder approval shall be obtained in the degree and manner required
under applicable state and federal law.

                                       -8-


<PAGE>   1
                        [WILSON SONSINI GOODRICH & ROSATI
                            PROFESSIONAL CORPORATION
                                  LETTERHEAD]

                                                                     EXHIBIT 5.1


                                December 17, 1998


Cardiac Pathways Corporation
995 Benecia Avenue
Sunnyvale, CA 94086

RE: REGISTRATION STATEMENT ON FORM S-8

Ladies and Gentlemen:

        We have examined the Registration Statement on Form S-8 to be filed by
you with the Securities and Exchange Commission on December 16, 1998 (the
"Registration Statement") in connection with the registration under the
Securities Act of 1933, as amended, of an aggregate of 2,620,000 shares of your
Common Stock, par value $0.001 per share (the "Shares"), (i) 400,000 shares of
which are to be issued pursuant to the 1998 Nonstatutory Stock Option Plan, (ii)
300,000 shares of which are to be issued pursuant to the 1991 Stock Plan, (iii)
20,000 shares of which are to be issued pursuant to the 1996 Director Option
Plan and (iv) 1,900,000 shares of which are to be issued pursuant to the 1998
Employee Stock Purchase Plan (collectively, the "Plans"). As your counsel in
connection with this transaction, we have examined the proceedings taken and are
familiar with the proceedings proposed to be taken by you in connection with the
issuance and sale of the Shares pursuant to the Plans.

        It is our opinion that, when issued and sold in the manner described in
the Plans and pursuant to the agreements which accompany each grant under the
Plans, the Shares will be legally and validly issued, fully-paid and
non-assessable.

        We consent to the use of this opinion as an exhibit to the Registration
Statement, and further consent to the use of our name wherever appearing in the
Registration Statement and any amendments thereto.

                                        Very truly yours,

                                        WILSON SONSINI GOODRICH & ROSATI

                                        /s/ Wilson Sonsini Goodrich & Rosati



<PAGE>   1
                                                                    EXHIBIT 23.1


               CONSENT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS


We consent to the incorporation by reference in the Registration Statement 
(Form S-8) pertaining to the 1998 Nonstatutory Stock Option Plan, 1991 Stock 
Plan, 1996 Director Option Plan and the 1998 Employee Stock Purchase Plan of 
our report dated July 28, 1998, with respect to the financial statements of 
Cardiac Pathways Corporation included in its Annual Report (Form 10-K) for the 
year ended June 30, 1998, filed with the Securities and Exchange Commission.

                                       /s/ Ernst & Young LLP


San Jose, California
December 15, 1998


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