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TC74HCT139A Specifications

Detailed technical information and Application Scenarios

Product Details

PartNumberManufactorQuantityAvailability
TC74HCT139ATOSHIBA1037Yes

TC74HCT139A** is a high-speed CMOS dual 2-to-4 line decoder/demultiplexer manufactured by **Toshiba**.

The TC74HCT139A is a high-speed CMOS dual 2-to-4 line decoder/demultiplexer manufactured by Toshiba.

Key Specifications:

  • Logic Family: HCT (High-Speed CMOS, TTL compatible)
  • Supply Voltage (VCC): 4.5V to 5.5V
  • Input Voltage (VI): 0V to VCC
  • Operating Temperature Range: -40°C to +85°C
  • Propagation Delay (tpd): 18 ns (typical at VCC = 5V, CL = 50pF)
  • Low Power Consumption: 4 μA (max) at static conditions
  • Output Current (IO): ±4 mA (min)
  • Package Options: SOP-16, TSSOP-16

Descriptions:

  • Dual 2-to-4 Line Decoder/Demultiplexer: Contains two independent decoders in a single package.
  • Active-Low Outputs: Each decoder has four inverted outputs.
  • Enable Inputs: Each decoder has an active-low enable (E̅) for control.
  • TTL-Compatible Inputs: Ensures direct interfacing with TTL logic levels.

Features:

  • High-Speed Operation: Optimized for fast switching applications.
  • Low Power Consumption: Suitable for battery-operated devices.
  • Wide Operating Voltage: Supports standard 5V logic systems.
  • Schmitt Trigger Inputs: Improves noise immunity.
  • Pin-Compatible with 74LS139: Easy replacement in existing designs.

This device is commonly used in address decoding, memory selection, and data routing applications.

(Note: Always refer to the official Toshiba datasheet for precise technical details.)

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