描述 Description

The 74ACT11139 is designed for use in high-performance memory-decoding or data-routing applications that require very short propagation delay times. In high-performance memory systems, this decoder is used to minimize the effects of system decoding.
The 74ACT11139 is composed of two individual 2-line to 4-line decoders in a single package. The active-low enables (1G\\ or 2G\\) can be used as data lines in demultiplexing applications. This decoder/demultiplexer features fully buffered inputs, each of which represents only one normalized load to its driving circuit.
The 74ACT11139 is characterized for operation from -40°C to 85°C.
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特性 Features

? Inputs Are TTL-Voltage Compatible
? Designed Specifically for High-Speed Memory Decoders and DataTransmission Systems
? Incorporates Two Enable Inputs to Simplify Cascading and/orData Reception
? Fully Synchronous Operation for Counting
? Center-Pin VCC and GND Configurations MinimizeHigh-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 (D) and ThinShrink Small-Outline (PW) Packages, and Standard Plastic 300-milDIPs (N) ?EPIC is a trademark of Texas Instruments Incorporated.