54AC11238, 74AC11238 3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS

SCAS039A - APRIL 1988 - REVISED APRIL 1993

features

Designed Specifically for High-Speed Memory Decoders and Data Transmission Systems
Noninverting Version of ´AC11138
Incorporates 3 Enable Inputs to Simplify Cascading and/or Data Reception
Flow-Through Architecture Optimizes PCB Layout
Center-Pin V_CC and GND Configurations Minimize High-Speed Switching Noise
EPIC^TM (Enhanced-Performance Implanted CMOS) 1-m Process
500-mA Typical Latch-Up Immunity at 125°C
Package Options Include Plastic Small-Outline Packages, Ceramic Chip Carriers, and Standard Plastic and Ceramic 300-mil DIPs

EPIC is a trademark of Texas Instruments

description

The ´AC11238 circuit is designed to be used inhigh-performance memory-decoding or data-routing applicationsrequiring very short propagation delay times. In high-performancememory systems, this decoder can be used to minimize the effects ofsystem decoding. When employed with high-speed memories utilizing afast enable circuit, the delay times of this decoder and the enabletime of the memory are usually less than the typical access time ofthe memory. This means that the effective system delay introduced bythe decoder is negligible.

The conditions at the binary select inputs and the three enableinputs select one of eight input lines. Two active-low and oneactive-high enable inputs reduce the need for external gates orinverters when expanding. A 24-line decoder can be implementedwithout external inverters and a 32-line decoder requires only oneinverter. An enable input can be used as a data input fordemultiplexing applications.

The 54AC11238 is characterized for operation over the fullmilitary temperature range of - 55°C to 125°C. The74AC11238 is characterized for operation from - 40°C to85°C.

Title: 3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS
Product Family: MULTIPLEXERS
Device Functionality: DECODER/DEMULTIPLEXER
Orderable Devices: 74AC11238D, 74AC11238N

View the complete PDF datasheet: scas039a.pdf (106 K Bytes) (Requires Acrobat Reader 3.x)

View more information about generic part numbers:74AC11238

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