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74LS138 1-of-8 Decoder/Demultiplexer IC (74138) DIP-16 Package

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25 In stock

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Description

The 74LS138 is a 1-of-8 decoder/demultiplexer IC housed in a 16-pin DIP (Dual In-line Package). It decodes a 3-bit binary input into one of eight outputs, with only one output being active at any given time. As a demultiplexer, it also routes a single input signal to one of eight outputs based on the state of the 3-bit address inputs.

Features

  • 1-of-8 Decoding: Converts a 3-bit binary input into one of eight mutually exclusive outputs.
  • Demultiplexer Function: Routes a single input to one of eight outputs, controlled by the address inputs.
  • Enable Inputs: Two enable inputs (G1 and G2A) must be active to select an output. The output is disabled if both enable inputs are inactive.
  • Active Low Outputs: Each output is active low, meaning it is in a low state when selected.
  • TTL Compatible: Designed to interface with TTL logic levels.

Specifications

  • Logic Family: LS (Low Power Schottky)
  • Number of Outputs: 8
  • Address Inputs: 3
  • Enable Inputs: 2 (G1, G2A)
  • Operating Voltage: 4.75V to 5.25V
  • Propagation Delay: Typically 10 ns at 5V
  • Input Levels: Compatible with TTL logic levels
  • Output Drive Capability: Can source or sink up to 8 mA
  • Pin Configuration: DIP-16 package
  • Temperature Range: 0°C to +70°C (commercial grade)

Note

* Product Images are shown for illustrative purposes only and may differ from actual product

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