Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
GAY GARY R
   2. Issuer Name and Ticker or Trading Symbol
SILICON LABORATORIES INC [SLAB] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Vice President
(Last)
(First)
(Middle)
4635 BOSTON LANE		 3. Date of Earliest Transaction (Month/Day/Year)
12/13/2005
(Street)

AUSTIN, TX 78735		 4. If Amendment, Date Original Filed(Month/Day/Year)
 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)		 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)		 4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		 5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)		 6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)		 7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common Stock, $0.0001 par value 12/21/2005   J(1)   28,875 D $ 0 24,609 D  

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)		 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)		 5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)		 6. Date Exercisable and Expiration Date
(Month/Day/Year)		 7. Title and Amount of Underlying Securities
(Instr. 3 and 4)		 8. Price of Derivative Security
(Instr. 5)		 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)		 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)		 11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Incentive Stock Option (right to buy) $ 24.3 12/13/2005   J V   285 06/13/2005(2) 06/13/2012 Common Stock, $0.0001 par value 1,087 $ 0 (18) 1,087 (3) D  
Incentive Stock Option (right to buy) $ 48.88 12/13/2005   J V   3,068 10/16/2002(4) 09/20/2010 Common Stock, $0.0001 par value 3,069 $ 0 (18) 3,069 (5) D  
Non-Qualified Stock Option (right to buy) $ 15.44 12/13/2005   J V   9,333 03/16/2001(6) 03/16/2011 Common Stock, $0.0001 par value 10,667 $ 0 (18) 10,667 (7) D  
Non-Qualified Stock Option (right to buy) $ 22.63 12/13/2005   J V   8,667 07/18/2001(8) 07/18/2011 Common Stock, $0.0001 par value 11,333 $ 0 (18) 11,333 (9) D  
Non-Qualified Stock Option (right to buy) $ 33.17 12/13/2005   J V   3,750 08/10/2005(10) 08/10/2014 Common Stock, $0.0001 par value 26,250 $ 0 (18) 26,250 (11) D  
Non-Qualified Stock Option (right to buy) $ 38.5 12/13/2005   J V   5,625 08/18/2004(10) 08/18/2013 Common Stock, $0.0001 par value 19,375 $ 0 (18) 19,375 (12) D  
Non-Qualified Stock Option (right to buy) $ 15.1 12/13/2005   J V   9,000 10/16/2002(4) 09/21/2011 Common Stock, $0.0001 par value 9,000 $ 0 (18) 9,000 (13) D  
Non-Qualified Stock Option (right to buy) $ 20.19 12/13/2005   J V   833 10/24/2005(14) 10/24/2012 Common Stock, $0.0001 par value 19,167 $ 0 (18) 19,167 (15) D  
Non-Qualified Stock Option (right to buy) $ 24.3 12/13/2005   J V   2,839 06/13/2005(2) 06/13/2012 Common Stock, $0.0001 par value 10,789 $ 0 (18) 10,789 (16) D  
Non-Qualified Stock Option (right to buy) $ 48.88 12/13/2005   J V   6,932 10/16/2002(4) 09/20/2010 Common Stock, $0.0001 par value 6,931 $ 0 (18) 6,931 (17) D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
GAY GARY R
4635 BOSTON LANE
AUSTIN, TX 78735		       Vice President  

Signatures

 Bruce A. Maurer, Power of Attorney for Gary R. Gay   12/23/2005
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) Transfer represents a pre-marital dissolutaion partition of community property.
(2) The Option becomes exercisable as it vests in a series of twelve (12) successive equal monthly installments measured from June 13, 2005.
(3) On December 13, 2005 options to acquire 285 shares of common stock were transferred by the reporting person pursuant to a domestic relations order.
(4) The Option becomes exercisable as it vests in a series of thirty six (36) successive equal monthly installments measured from October 16, 2002.
(5) On December 13, 2005 options to acquire 3,068 shares of common stock were transferred by the reporting person pursuant to a domestic relations order.
(6) The Option becomes exercisable as it vests in a series of sixty (60) successive equal monthly installments measured from Marcc 16, 2001.
(7) On December 13, 2005 options to acquire 9,333 shares of common stock were transferred by the reporting person pursuant to a domestic relations order.
(8) The Option becomes exercisable as it vests in a series of sixty (60) successive equal monthly installments measured from July 18, 2001.
(9) On December 13, 2005 options to acquire 8,667 shares of common stock were transferred by the reporting person pursuant to a domestic relations order.
(10) Option vests and becomes exercisable with respect to (i) twenty percent (20%) of the option shares upon optionee's completion of one year of service measured from the grant date and (ii) the balance of the option shares in a series of forty-eight (48) successive monthly installments over the forty-eight (48) month period measured from the first year anniversary of the grant date.
(11) On December 13, 2005 options to acquire 3,750 shares of common stock were transferred by the reporting person pursuant to a domestic relations order.
(12) On December 13, 2005 options to acquire 5,625 shares of common stock were transferred by the reporting person pursuant to a domestic relations order.
(13) On December 13, 2005 options to acquire 9,000 shares of common stock were transferred by the reporting person pursuant to a domestic relations order.
(14) The Option becomes exercisable as it vests in a series of twelve (12) successive equal monthly installments measured from October 24, 2005.
(15) On December 13, 2005 options to acquire 833 shares of common stock were transferred by the reporting person pursuant to a domestic relations order.
(16) On December 13, 2005 options to acquire 2,839 shares of common stock were transferred by the reporting person pursuant to a domestic relations order.
(17) On December 13, 2005 options to acquire 6,932 shares of common stock were transferred by the reporting person pursuant to a domestic relations order.
(18) Not applicable per instruction 4(c)(iii).

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