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CD74HC238NS - High-Speed CMOS Logic 3 to 8-Line Decoder/Demultiplexer Inverting/Noninverting

Download the CD74HC238NS datasheet PDF. This datasheet also covers the CD74HC138 variant, as both devices belong to the same high-speed cmos logic 3 to 8-line decoder/demultiplexer inverting/noninverting family and are provided as variant models within a single manufacturer datasheet.

Description

The CDx4HC(T)138 and '238 are three to eight decoders with one standard output strobe (G2) and two active low output strobes (G 1 and G 0).

When the outputs are gated by any of the strobe inputs, they are all forced into the high state.

Features

  • Select one of eight data outputs:.
  • Active low for '138.
  • Active high for '238.
  • l/O port or memory selector.
  • Three enable inputs to simplify cascading.
  • Typical propagation delay of 13 ns at VCC = 5 V, CL = 15 pF, TA = 25°C.
  • Fanout (over temperature range).
  • Bus driver outputs: 15 LSTTL loads.
  • Standard outputs: 10 LSTTL loads.
  • Wide operating temp range: -55°C to 125°C.
  • Balanced propagation delay and t.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (CD74HC138-etcTI.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number CD74HC238NS
Manufacturer Texas Instruments
File Size 1.28 MB
Description High-Speed CMOS Logic 3 to 8-Line Decoder/Demultiplexer Inverting/Noninverting
Datasheet download datasheet CD74HC238NS Datasheet

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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.

View original datasheet text
CD54HC138, CD74HC138, CD54HCT138, CD74HCT138, CD54HC238, CD74HC238, CD54HCT238, CD74HCT238 SCHS147J – NOVEMBER 1998 – REVISED NOVEMBER 2021 CDx4HC138, CDx4HCT138, CDx4HC238, CDx4HCT238 High-Speed CMOS Logic 3- to 8-Line Decoder/Demultiplexer Inverting and Noninverting 1 Features • Select one of eight data outputs: – Active low for '138 – Active high for '238 • l/O port or memory selector • Three enable inputs to simplify cascading • Typical propagation delay of 13 ns at VCC = 5 V, CL = 15 pF, TA = 25°C • Fanout (over temperature range) – Bus driver outputs: 15 LSTTL loads – Standard outputs: 10 LSTTL loads • Wide operating temp range: -55°C to 125°C • Balanced propagation delay and transition times • Significant power reduction compared to LSTTL logic ICs • HC types – 2 V to 6 V operation
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