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SN74HCT157 Datasheet(PDF) 1 Page - Texas Instruments |
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SN74HCT157 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 6 page SN54HCT157, SN74HCT157 QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS SCLS071B – NOVEMBER 1988 – REVISED MAY 1997 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 D Inputs Are TTL-Voltage Compatible D Buffered Inputs and Outputs D Package Options Include Plastic Small-Outline (D) and Ceramic Flat (W) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) 300-mil DIPs description These monolithic data selectors/multiplexers contain inverters and drivers to supply full data selection to the four output gates. A separate strobe (G) input is provided. A 4-bit word is selected from one of two sources and is routed to the four outputs. The SN54HCT157 is characterized for operation over the full military temperature range of –55 °C to 125 °C. The SN74HCT157 is characterized for operation from –40 °C to 85°C. FUNCTION TABLE INPUTS OUTPUT STROBE SELECT DATA OUTPUT Y G A/B A B Y H X X X L L L L XL L L H XH L H X LL L H X H H Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 A/B 1A 1B 1Y 2A 2B 2Y GND VCC G 4A 4B 4Y 3A 3B 3Y SN54HCT157 ...J OR W PACKAGE SN74HCT157 ...D OR N PACKAGE (TOP VIEW) 32 1 20 19 910 11 1213 4 5 6 7 8 18 17 16 15 14 4A 4B NC 4Y 3A 1B 1Y NC 2A 2B SN54HCT157 . . . FK PACKAGE (TOP VIEW) NC – No internal connection Copyright © 1997, Texas Instruments Incorporated UNLESS OTHERWISE NOTED this document contains PRODUCTION DATA information 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. |
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