74HCT139 Dual 2 To 4 Line Decoder Demultiplexer IC (74HCT139 IC)

The 74HCT139 is a high speed CMOS IC containing two independent 2 to 4 line decoders and demultiplexers with TTL compatible input levels. Each section decodes two input lines into four active low outputs.

This IC is used in memory selection, data routing, and digital control systems where signal decoding and distribution are required. It ensures reliable performance in TTL compatible systems.

Key Features

• Dual 2 to 4 line decoder demultiplexer
• Two independent decoder sections
• Active low outputs
• Enable control inputs for each section
• Suitable for address decoding
• High speed CMOS logic operation

Specifications

• IC Type = Dual 2 To 4 Decoder Demultiplexer
• Logic Family = 74HCT
• Supply Voltage = 4.5V to 5.5V
• Package Type = DIP
• Number of Pins = 16
• Number of Sections = 2
• Operating Temperature = -40C to +85C

Interfaces

• VCC = Power supply
• GND = Ground
• A1 B1 = Address inputs section 1
• Y10 to Y13 = Outputs section 1
• A2 B2 = Address inputs section 2
• Y20 to Y23 = Outputs section 2
• G1 G2 = Enable inputs for each section