器件名称:
0022284154
功能描述:
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTOR/MULTIPLEXER WITH 3-STATE OUTPUTS
文件大小:
425.88KB 共13页
简 介:
74ACT11257 QUADRUPLE 2-LINE TO 1-LINE DATA SELECTOR/MULTIPLEXER WITH 3-STATE OUTPUTS SCAS053B – JANUARY 1989 – REVISED APRIL 1996 D D D D D D D D Inputs Are TTL-Voltage Compatible 3-State Outputs Interface Directly With System Bus Flow-Through Architecture Optimizes PCB Layout Center-Pin VCC and GND Configurations Minimize High-Speed Switching Noise EPICt (Enhanced-Performance Implanted CMOS) 1-mm Process 500-mA Typical Latch-Up Immunity at 125°C Provides Bus Interface From Multiple Sources in High-Performance Systems Package Options Include Plastic Small-Outline (DW) and Shrink Small-Outline (DB) Packages, and Standard Plastic 300-mil DIPs (N) DB, DW, OR N PACKAGE (TOP VIEW) A /B 1Y 2Y GND GND GND GND 3Y 4Y OE 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 1A 1B 2A 2B VCC VCC 3A 3B 4A 4B description The 74ACT11257 is designed to multiplex signals from 4-bit data sources to four output data lines in bus-organized systems. The 3-state outputs do not load the data lines when the output-enable (OE) input is at a high logic level. The 74ACT11257 is characterized for operation from –40°C to 85°C. FUNCTION TABLE INPUTS OE H L L L L SELECT A/B X L L H H DATA A X L H X X B X X X L H Z L H L H OUTPUT Y 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. EPIC is a trademark of Texas Instruments Incorpor……
