- SN54160 THRU SN54163, SN54LS160A THRU SN54LS163A, SN54S162, SN54S163, SN74160 THRU SN74163, SN74LS160A THRU SN74LS163A, SN74S162, SN74S163 SYNCHRONOUS 4-BIT COUNTERS SDLS060 – OCTOBER 1976 – REVISED MARCH 1988 Copyright  1988, Texas Instruments Incorporated PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. 
- SN54160 THRU SN54163, SN54LS160A THRU SN54LS163A, SN54S162, SN54S163, SN74160 THRU SN74163, SN74LS160A THRU SN74LS163A, SN74S162, SN74S163 SYNCHRONOUS 4-BIT COUNTERS SDLS060 – OCTOBER 1976 – REVISED MARCH 1988 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 
- SN54LS160A THRU SN54LS163A, SN54S162, SN54S163, SN74LS160A THRU SN74LS163A, SN74S162, SN74S163 SYNCHRONOUS 4-BIT COUNTERS SDLS060 – OCTOBER 1976 – REVISED MARCH 1988 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 3 
- SN54160, SN54162, SN74160, SN74162 SYNCHRONOUS 4-BIT COUNTERS SDLS060 – OCTOBER 1976 – REVISED MARCH 1988 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 
- SN54161, SN54163, SN74161, SN74163 SYNCHRONOUS 4-BIT COUNTERS SDLS060 – OCTOBER 1976 – REVISED MARCH 1988 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 5 
- SN54LS160A, SN54LS162A, SN74LS160A, SN74LS162A SYNCHRONOUS 4-BIT COUNTERS SDLS060 – OCTOBER 1976 – REVISED MARCH 1988 6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 
- SN54LS161A, SN54LS163A, SN74LS161A, SN74LS163A SYNCHRONOUS 4-BIT COUNTERS SDLS060 – OCTOBER 1976 – REVISED MARCH 1988 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 7 
- SN54S162, SN74S162 SYNCHRONOUS 4-BIT COUNTERS SDLS060 – OCTOBER 1976 – REVISED MARCH 1988 8 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 
- SN54S163, SN74S163 SYNCHRONOUS 4-BIT COUNTERS SDLS060 – OCTOBER 1976 – REVISED MARCH 1988 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 9 
- SN54160, SN54162, SN54LS160A, SN54LS162A, SN54S162, SN74160, SN74162, SN74LS160A, SN74LS162A, SN74S162 SYNCHRONOUS 4-BIT COUNTERS SDLS060 – OCTOBER 1976 – REVISED MARCH 1988 10 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 
- SN54161, SN54163, SN54LS161A, SN54LS163A, SN54S163, SN74161, SN74163, SN74LS161A, SN74LS163A, SN74S163 SYNCHRONOUS 4-BIT COUNTERS SDLS060 – OCTOBER 1976 – REVISED MARCH 1988 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 11 
- SN54160 THRU SN54163, SN74160 THRU SN74163 SYNCHRONOUS 4-BIT COUNTERS SDLS060 – OCTOBER 1976 – REVISED MARCH 1988 12 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 
- SN54160 THRU SN54163, SN74160 THRU SN74163 SYNCHRONOUS 4-BIT COUNTERS SDLS060 – OCTOBER 1976 – REVISED MARCH 1988 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 13 
- SN54LS160 THRU SN54LS163A, SN74LS160 THRU SN74LS163A SYNCHRONOUS 4-BIT COUNTERS SDLS060 – OCTOBER 1976 – REVISED MARCH 1988 14 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 
- SN54LS160 THRU SN54LS163A, SN74LS160 THRU SN74LS163A SYNCHRONOUS 4-BIT COUNTERS SDLS060 – OCTOBER 1976 – REVISED MARCH 1988 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 15 
- SN54S162, SN54S163, SN74S162, SN74S163 SYNCHRONOUS 4-BIT COUNTERS SDLS060 – OCTOBER 1976 – REVISED MARCH 1988 16 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 
- SN54S162, SN54S163, SN74S162, SN74S163 SYNCHRONOUS 4-BIT COUNTERS SDLS060 – OCTOBER 1976 – REVISED MARCH 1988 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 17 
- SN54160 THRU SN54163, SN54LS160A THRU SN54LS163A, SN54S162, SN54S163, SN74160 THRU SN74163, SN74LS160A THRU SN74LS163A, SN74S162, SN74S163 SYNCHRONOUS 4-BIT COUNTERS SDLS060 – OCTOBER 1976 – REVISED MARCH 1988 18 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 
- SN54160 THRU SN54163, SN54LS160A THRU SN54LS163A, SN74160 THRU SN74163, SN74LS160A THRU SN74LS163A, SYNCHRONOUS 4-BIT COUNTERS SDLS060 – OCTOBER 1976 – REVISED MARCH 1988 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 19 
- SN54S162, SN54S163, SN74S162, SN74S163 SYNCHRONOUS 4-BIT COUNTERS SDLS060 – OCTOBER 1976 – REVISED MARCH 1988 20 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 
- SN54160 THRU SN54163, SN54LS160A THRU SN54LS163A, SN54S162, SN54S163, SN74160 THRU SN74163, SN74LS160A THRU SN74LS163A, SN74S162, SN74S163 SYNCHRONOUS 4-BIT COUNTERS SDLS060 – OCTOBER 1976 – REVISED MARCH 1988 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 21 
- SN54160 THRU SN54163, SN54LS160A THRU SN54LS163A, SN54S162, SN54S163, SN74160 THRU SN74163, SN74LS160A THRU SN74LS163A, SN74S162, SN74S163 SYNCHRONOUS 4-BIT COUNTERS SDLS060 – OCTOBER 1976 – REVISED MARCH 1988 22 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 
- PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 TAPE AND REEL INFORMATION *All dimensions are nominal Device SN74LS161ADR Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant SOIC D 16 2500 330.0 16.4 6.5 10.3 2.1 8.0 16.0 Q1 SN74LS161ANSR SO NS 16 2000 330.0 16.4 8.2 10.5 2.5 12.0 16.0 Q1 SN74LS163ADR SOIC D 16 2500 330.0 16.4 6.5 10.3 2.1 8.0 16. 
- PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) SN74LS161ADR SOIC D 16 2500 333.2 345.9 28.6 SN74LS161ANSR SO NS 16 2000 367.0 367.0 38.0 SN74LS163ADR SOIC D 16 2500 333.2 345.9 28.6 SN74LS163ANSR SO NS 16 2000 367.0 367.0 38. 
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