The 74F138 1-of-8 decoder/demultiplexer is a high-speed product released by Fairchild Semiconductor Corporation. It has decoding/demultiplexing function, multiple input enable for easy expansion and mutually exclusive outputs.
The Fairchild Semiconductor 74F138 is a high-speed 1-of-8 decoder/demultiplexer designed for high-speed bipolar memory chip select address decoding. It features multiple input enables allowing parallel expansion to larger decoders and provides active LOW mutually exclusive outputs. The device accepts three binary weighted inputs and includes three enable inputs (two active LOW, one active HIGH) to control output activation.
It features three Enable inputs: two active LOW and one active HIGH.
The device operates with a supply voltage of +4.5V to +5.5V at free air ambient temperatures from 0°C to +70°C.