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SN74HCT138D - 3-Line to 8-Line Decoders/Demultiplexers

Download the SN74HCT138D datasheet PDF. This datasheet also covers the SN74HCT138 variant, as both devices belong to the same 3-line to 8-line decoders/demultiplexers family and are provided as variant models within a single manufacturer datasheet.

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Note: The manufacturer provides a single datasheet file (SN74HCT138-etcTI.pdf) that lists specifications for multiple related part numbers.

General Description

The ’HCT138 devices are designed for highperformance memory-decoding or data-routing applications requiring very short propagation delay times.

In high-performance memory systems, these decoders can minimize the effects of system decoding.

Overview

SN54HCT138, SN74HCT138 SCLS171F – MARCH 1984 – REVISED MARCH 2022 SNx4HCT138 3-Line to 8-Line Decoders/Demultiplexers.

Key Features

  • Operating voltage range of 4.5 V to 5.5 V.
  • Outputs can drive up to 10 LSTTL loads.
  • Low power consumption, 80-µA max ICC.
  • Typical tpd = 17 ns.
  • ±4-mA output drive at 5 V.
  • Low input current of 1 µA max.
  • Inputs are TTL-Voltage compatible.
  • Designed specifically for high-speed memory decoders and data transmission systems.
  • Incorporate three enable inputs to simplify cascading and/or data reception 2.

More Datasheets from Texas Instruments

Part Number Description
SN74HCT138 3-Line to 8-Line Decoders/Demultiplexers
SN74HCT138N 3-Line to 8-Line Decoders/Demultiplexers
SN74HCT139 Dual 2-Line To 4-Line Decoders/Demultiplexers
SN74HCT125 Quadruple Bus Buffer Gates
SN74HCT125D Quadruple Bus Buffer Gates
SN74HCT125N Quadruple Bus Buffer Gates
SN74HCT14 Hex Schmitt-Trigger Inverter
SN74HCT14-Q1 Hex Schmitt-Trigger Inverter
SN74HCT157 QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXER
SN74HCT157N QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXER