74HCT138 3-to-8 Decoder Demultiplexer IC DIP-16 (74HCT138 IC)

The 74HCT138 is a high-speed CMOS 3-to-8 line decoder and demultiplexer IC with TTL-compatible inputs. It decodes three binary address inputs into one of eight mutually exclusive active-low outputs, making it ideal for memory address decoding, data routing, chip selection, and digital logic applications. The device features three enable inputs for flexible system expansion and control.

Key Features -

• 3-to-8 line decoder and demultiplexer

• TTL-compatible HCT inputs

• Eight active-low outputs

• High-speed CMOS logic

• Three enable inputs for flexible control

• Low power consumption

• DIP-16 through hole package

Specifications -

• Product type - Decoder / Demultiplexer IC

• Model - 74HCT138

• Logic family - HCT CMOS

• Function - 3-to-8 Line Decoder / Demultiplexer

• Package type - DIP-16

• Mounting type - Through Hole Mount

• Number of inputs - 3 Address Inputs

• Number of outputs - 8 Active-Low Outputs

• Enable inputs - 3 (Two active-low and one active-high)

• Operating voltage - Typically 4.5V to 5.5V

• Additional features - High noise immunity, low power operation, and TTL compatibility

Applications -

• Memory address decoding

• Chip select generation

• Data routing circuits

• Microprocessor systems

• Digital control circuits

• Industrial automation equipment

• Embedded electronics projects