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CD74HC137 Datasheet High-speed CMOS Logic 3 To 8-line Decoder/demultiplexer

Manufacturer: Texas Instruments

Overview: Data sheet acquired from Harris Semiconductor SCHS146F March 1998 - Revised October 2003 CD74HC137, CD74HCT137, CD54HC237, CD74HC237, CD74HCT237 High-Speed CMOS Logic, 3- to 8-Line Decoder/Demultiplexer with Address.

General Description

Both circuits have three binary select inputs (A0, A1 and A2) that can be latched by an active High Latch Enable (LE) signal to isolate the outputs from select-input changes.

A “Low” LE makes the output transparent to the input and the circuit functions as a one-of-eight decoder.

Two Output Enable inputs (OE1 and OE0) are provided to simplify cascading and to facilitate demultiplexing.

Key Features

  • Select One of Eight Data Outputs - Active Low for CD74HC137 and CD74HCT137 - Active High for ’HC237 and CD74HCT237.
  • l/O Port or Memory Selector.
  • Two Enable Inputs to Simplify Cascading.
  • Typical Propagation Delay of 13ns 15pF, TA = 25oC (CD74HC237) at VCC = 5V,.
  • Fanout (Over Temperature Range) - Standard Outputs.
  • 10 LSTTL Loads - Bus Driver Outputs.
  • . . . 15 LSTTL Loads.
  • Wide Operating T.

More Datasheets from Texas Instruments

Part Number Description
CD74HC132 High-Speed CMOS Logic Quad 2-Input NAND Schmitt Trigger
CD74HC138 High-Speed CMOS Logic 3 to 8-Line Decoder/Demultiplexer Inverting/Noninverting
CD74HC138-Q1 3- TO 8-LINE INVERTING DECODER/DEMULTIPLEXER
CD74HC138E High-Speed CMOS Logic 3 to 8-Line Decoder/Demultiplexer Inverting/Noninverting
CD74HC138M High-Speed CMOS Logic 3 to 8-Line Decoder/Demultiplexer Inverting/Noninverting
CD74HC139 Dual 2- to 4-Line Decoder/Demultiplexer
CD74HC10 Triple 3-Input NAND Gates
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CD74HC109 Dual J-K Flip-Flop
CD74HC10E Triple 3-Input NAND Gates

CD74HC137 Distributor