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SN74ALS157ADE4 Datasheet(PDF) 1 Page - Tachyonics CO,. LTD |
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SN74ALS157ADE4 Datasheet(HTML) 1 Page - Tachyonics CO,. LTD |
1 / 20 page SN54ALS157A, SN54ALS158 SN74ALS157A, SN74ALS158, SN74AS157, SN74AS158 QUADRUPLE 1OF2 DATA SELECTORS/MULTIPLEXERS SDAS081C − APRIL 1982 − REVISED DECEMBER 1994 Copyright 1994, Texas Instruments Incorporated 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 • Buffered Inputs and Outputs • Package Options Include Plastic Small-Outline (D) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) 300-mil DIPs description These 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 ′ALS157A and SN74AS157 present true data. The ′ALS158 and SN74AS158 present inverted data to minimize propagation delay time. The SN54ALS157A and SN54ALS158 are characterized for operation over the full military temperature range of − 55 °C to 125°C. The SN74ALS157A, SN74ALS158, SN74AS157, and SN74AS158 are characterized for operation from 0 °C to 70°C. FUNCTION TABLE INPUTS OUTPUT Y G A /B DATA ′ALS157A ′ALS158 G A /B A B ALS157A SN74AS157 ALS158 SN74AS158 H X X X L H L LL XL H L LH XH L L HX LL H L H X H H L SN54ALS157A, SN54ALS158 ...J PACKAGE SN74ALS157A, SN74ALS158, SN74AS157, SN74AS158 ... D OR N PACKAGE (TOP VIEW) 32 1 20 19 910 11 12 13 4 5 6 7 8 18 17 16 15 14 4A 4B NC 4Y 3A 1B 1Y NC 2A 2B SN54ALS157A, SN54ALS158 . . . FK PACKAGE (TOP VIEW) 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 NC − No internal connection 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. |
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