74HC138 3-to-8 Decoder DIP-16

3-to-8 line decoder/demultiplexer in DIP-16 package, operating from 2–6V. Three enable inputs (active-high and active-low) allow cascading without external gates. Commonly used for address decoding and chip-select generation.

Pinout

Logical pinout · physical placement not verified
74HC138 3-TO-8 DECODERA0Y6A1Y5A2Y4E1Y3/E2Y2/E3Y1Y7Y0GNDVCC
  • A01
    Type · Analog
  • A12
    Type · Analog
  • A23
    Type · Analog
  • E14
    Type · Control
  • /E25
    Type · Control
  • /E36
    Type · Control
  • Y77
    Type · Signal
  • GND8
    Type · Ground
  • Y69
    Type · Signal
  • Y510
    Type · Signal
  • Y411
    Type · Signal
  • Y312
    Type · Signal
  • Y213
    Type · Signal
  • Y114
    Type · Signal
  • Y015
    Type · Signal
  • VCC16
    Type · Power

Bare ICs

67 other options

74HC logic gates, MCP3008/MCP23017 ADCs and expanders, 24LC256 EEPROM, 4N25-series optocouplers and ULN2803A drivers — bare DIP chips with no breakout-board conveniences like pull-ups or level shifting.

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