SN54190, SN54191, SN54LS190, SN54LS191, SN74190, SN74191, SN74LS190, SN74LS191 SYNCHRONOUS UP/DOWN COUNTERS WITH DOWN/UP MODE CONTROL SDLS072 - DECEMBER 1972 - 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. POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 1 SN54190, SN54191, SN54LS190, SN54LS191, SN74190, SN74191, SN74LS190, SN74LS191 SYNCHRONOUS UP/DOWN COUNTERS WITH DOWN/UP MODE CONTROL SDLS072 - DECEMBER 1972 - REVISED MARCH 1988 2 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 SN54190, SN54LS190, SN74190, SN74LS190 SYNCHRONOUS UP/DOWN COUNTERS WITH DOWN/UP MODE CONTROL SDLS072 - DECEMBER 1972 - REVISED MARCH 1988 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 3 SN54191, SN54LS191, SN74191, SN74LS191 SYNCHRONOUS UP/DOWN COUNTERS WITH DOWN/UP MODE CONTROL SDLS072 - DECEMBER 1972 - REVISED MARCH 1988 4 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 SN54190, SN54LS190, SN74190, SN74LS190 SYNCHRONOUS UP/DOWN COUNTERS WITH DOWN/UP MODE CONTROL SDLS072 - DECEMBER 1972 - REVISED MARCH 1988 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 5 SN54191, SN54LS191, SN74191, SN74LS191 SYNCHRONOUS UP/DOWN COUNTERS WITH DOWN/UP MODE CONTROL SDLS072 - DECEMBER 1972 - REVISED MARCH 1988 6 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 SN54190, SN54191, SN54LS190, SN54LS191, SN74190, SN74191, SN74LS190, SN74LS191 SYNCHRONOUS UP/DOWN COUNTERS WITH DOWN/UP MODE CONTROL SDLS072 - DECEMBER 1972 - REVISED MARCH 1988 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 7 SN54190, SN54191, SN74190, SN74191 SYNCHRONOUS UP/DOWN COUNTERS WITH DOWN/UP MODE CONTROL SDLS072 - DECEMBER 1972 - REVISED MARCH 1988 8 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 SN54LS190, SN54LS191, SN74LS190, SN74LS191 SYNCHRONOUS UP/DOWN COUNTERS WITH DOWN/UP MODE CONTROL SDLS072 - DECEMBER 1972 - REVISED MARCH 1988 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 9 SN54LS190, SN54LS191, SN74LS190, SN74LS191 SYNCHRONOUS UP/DOWN COUNTERS WITH DOWN/UP MODE CONTROL SDLS072 - DECEMBER 1972 - REVISED MARCH 1988 10 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 SN54190, SN54191, SN54LS190, SN54LS191, SN74190, SN74191, SN74LS190, SN74LS191 SYNCHRONOUS UP/DOWN COUNTERS WITH DOWN/UP MODE CONTROL SDLS072 - DECEMBER 1972 - REVISED MARCH 1988 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 11 SN54190, SN54191, SN54LS190, SN54LS191, SN74190, SN74191, SN74LS190, SN74LS191 SYNCHRONOUS UP/DOWN COUNTERS WITH DOWN/UP MODE CONTROL SDLS072 - DECEMBER 1972 - REVISED MARCH 1988 12 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 SN54190, SN54191, SN54LS190, SN54LS191, SN74190, SN74191, SN74LS190, SN74LS191 SYNCHRONOUS UP/DOWN COUNTERS WITH DOWN/UP MODE CONTROL SDLS072 - DECEMBER 1972 - REVISED MARCH 1988 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 13 PACKAGE MATERIALS INFORMATION www.ti.com 19-Mar-2008 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel Diameter Width (mm) W1 (mm) A0 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant SN74LS191DR SOIC D 16 2500 330.0 16.4 6.5 10.3 2.1 8.0 16.0 Q1 SN74LS191NSR SO NS 16 2000 330.0 16.4 8.2 10.5 2.5 12.0 16.0 Q1 Pack Materials-Page 1 PACKAGE MATERIALS INFORMATION www.ti.com 19-Mar-2008 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) SN74LS191DR SN74LS191NSR SOIC D 16 2500 333.2 345.9 28.6 SO NS 16 2000 346.0 346.0 33.0 Pack Materials-Page 2 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. 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