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74AC11239D датащи(PDF) 1 Page - Texas Instruments |
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74AC11239D датащи(HTML) 1 Page - Texas Instruments |
1 / 7 page D OR N PACKAGE (TOP VIEW) 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 1Y1 1Y2 1Y3 GND 2Y0 2Y1 2Y2 2Y3 1Y0 1A 1B 1G VCC 2G 2A 2B 74AC11239 DUAL 2–LINE TO 4–LINE DECODER/DEMULTIPLEXER SCAS072A – JULY 1989 – REVISED APRIL 1993 Copyright © 1993, Texas Instruments Incorporated 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 • Designed Specifically for High-Speed Memory Decoders and Data Transmission Systems • Incorporates Two Enable Inputs to Simplify Cascading and/or Data Reception • Flow-Through Architecture to Optimize PCB Layout • Center-Pin V CC and GND Configurations to Minimize High-Speed Switching Noise • EPICt (Enhanced-Performance Implanted CMOS) 1- mm Process • 500-mA Typical Latch-Up Immunity at 125 °C • Package Options Include Plastic Small Outline Packages, and Standard Plastic 300-mil DIPs description The 74AC11239 circuit is designed to be used in high-performance memory-decoding or data- routing applications requiring very short propagation delay times. In high-performance memory systems, this decoder can be used to minimize the effects of system decoding. When employed with high-speed memories utilizing a fast enable circuit, the delay times of this decoder and the enable time of the memory are usually less than the typical access time of the memory. This means that the effective system delay introduced by the decoder is negligible. The 74AC11239 is comprised of two individual two-line to four-line decoders in a single package. The active-low enable input can be used as a data line in demultiplexing applications. These decoders/demultiplexers feature fully buffered inputs, each of which represents only one normalized load to its driving circuit. The 74AC11239 is characterized for operation from – 40 °C to 85°C. FUNCTION TABLE ENABLE INPUT SELECT INPUTS OUTPUTS G A B Y0 Y1 Y2 Y3 H X X L L L L L L LH LL L L H LL HL L L L HL LHL L H H L L L H EPIC is a trademark of 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. |
Аналогичный номер детали - 74AC11239D |
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Аналогичное описание - 74AC11239D |
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