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See Technical Specifications

JM38510/37701B2A +BOM

Decoder/Demultiplexer 1 x 3:8 20-LCCC (8.89x8.89)

Manufacturer:

Texas Instruments
Mfr.Part #:

JM38510/37701B2A
Datasheet:

JM38510/37701B2A Datasheet (PDF)
Series:

54ALS
Type:

Decoder/Demultiplexer
Circuit:

1 x 3:8
Independent Circuits:

1

JM38510/37701B2A General Description

The ´ALS138A and ´AS138 are 3-line to 8-line decoders/demultiplexers designed for high-performance memory-decoding or data-routing applications requiring very short propagation delay times. In high-performance systems, these devices can be used to minimize the effects of system decoding. When employed with high-speed memories with a fast enable circuit, the delay times of the decoder and the enable time of the memory are usually less than the typical access time of the memory. The effective system delay introduced by the Schottky-clamped system decoder is negligible.

The conditions at the binary-select (A, B, and C) inputs and the three enable (G1, , and ) inputs select one of eight output lines. Two active-low and one active-high enable inputs reduce the need for external gates or inverters when expanding. A 24-line decoder can be implemented without external inverters and a 32-line decoder requires only one inverter. An enable input can be used as a data input for demultiplexing applications.

The SN54ALS138A and SN54AS138 are characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ALS138A and SN74AS138 are characterized for operation from 0°C to 70°C.

Key Features

Designed Specifically for High-Speed Memory Decoders and Data Transmission Systems
Incorporate Three Enable Inputs to Simplify Cascading and/or Data Reception
Package Options Include Plastic Small-Outline (D) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) 300-mil DIPs

Specifications

Series	54ALS	Type	Decoder/Demultiplexer
Circuit	1 x 3:8	Independent Circuits	1
Current - Output High, Low	400µA, 4mA	Voltage Supply Source	Single Supply
Voltage - Supply	4.5V ~ 5.5V	Operating Temperature	-55°C ~ 125°C
Mounting Type	Surface Mount