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CD74HC139 - Dual 2- to 4-Line Decoder/Demultiplexer

General Description

The ’HC139 and ’HCT139 devices contain two independent binary to one of four decoders each with a single active low enable input (1E or 2E).

Data on the select inputs (1A0 and 1A1 or 2A0 and 2A1) cause one of the four normally high outputs to go low.

Key Features

  • Multifunction Capability - Binary to 1 of 4 Decoders or 1 to 4 Line Demultiplexer.
  • Active Low Mutually Exclusive Outputs.
  • Fanout (Over Temperature Range) - Standard Outputs.
  • 10 LSTTL Loads - Bus Driver Outputs.
  • . . . 15 LSTTL Loads.
  • Wide Operating Temperature Range . . . -55oC to 125oC.
  • Balanced Propagation Delay and Transition Times.
  • Significant Power Reduction Compared to LSTTL Logic ICs.

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Other Datasheets by Texas Instruments

Part Number Description
CD74HC132 High-Speed CMOS Logic Quad 2-Input NAND Schmitt Trigger
CD74HC137 High-Speed CMOS Logic 3 to 8-Line Decoder/Demultiplexer
CD74HC138 High-Speed CMOS Logic 3 to 8-Line Decoder/Demultiplexer Inverting/Noninverting
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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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Data sheet acquired from Harris Semiconductor SCHS148D September 1997 - Revised October 2003 CD54HC139, CD74HC139, CD54HCT139, CD74HCT139 High-Speed CMOS Logic Dual 2- to 4-Line Decoder/Demultiplexer [ /Title (CD74 HC139 , CD74 HCT13 9) /Subject (High Speed CMOS Logic Dual 2-to-4 Line Decod Features • Multifunction Capability - Binary to 1 of 4 Decoders or 1 to 4 Line Demultiplexer • Active Low Mutually Exclusive Outputs • Fanout (Over Temperature Range) - Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads - Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads • Wide Operating Temperature Range . . .