74139 Dual 2-to-4 Line Decoder/Demultiplexer IC

The 74139 is a TTL logic IC that integrates two independent 2-line to 4-line decoders in a single package.
Each decoder converts binary address inputs into one-of-four active-low outputs.
The device operates from a single 5 V supply and is compatible with standard TTL logic levels.
Independent enable inputs allow selective activation of each decoder section.
Typical applications include address decoding, memory selection, and signal routing in digital systems.

• Dual Decoder Architecture providing two independent 2-to-4 decoders

• Active-Low Outputs suitable for logic and address decoding

• Independent Enable Inputs allowing flexible control

• TTL Logic Family compatible with standard TTL levels

• Single 5 V Supply Operation for digital systems

• Through-Hole DIP Package for breadboard and PCB use

• Model | 74139

• Device Type | Dual 2-Line to 4-Line Decoder/Demultiplexer IC

• Logic Family | TTL

• Number of Decoders | 2

• Inputs per Decoder | 2

• Outputs per Decoder | 4 (Active-Low)

• Enable Inputs | 2 (Independent)

• Supply Voltage | 5 V

• Propagation Delay (Typical) | 15 ns

• Output Sink Current (Max) | 16 mA

• Power Consumption (Typical) | 50 mW

• Operating Temperature Range | 0 °C to 70 °C

• Package Type | 16-Pin DIP

• 3D Model
• Datasheet