Hitachi HD74HC138
The HD74HC138 has 3 binary select inputs (A, B and C).| Part No. | HD74HC138 |
|---|---|
| Datasheet | HD74HC138 Download |
| Manufacturer |  Hitachi |
| Description | 3-to-8-line Decoder/Demultiplexer |
| Buy | Stock & Price |
DESCRIPTION
If the device is enabled these inputs determine which one of the eight normally high outputs will go low. Two active low and one active high enables (G1, G2A and G2B) are provided to ease the cascading of decoders.FEATURES
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● High Speed Operation: tpd (A, B, C to Y) = 16.5 ns typ (CL = 50 pF) High Output Current: Fanout of 10 LSTTL Loads Wide Operating Voltage: VCC = 2 V to 6 V Low Input Current: 1 µA max Low Quiescent Supply Current: ICC (static) = 4 µA max (Ta = 25°C) Function Table Inputs Enable G1 X X L H H H H H H H H G2A X H X L L L L L L L L G2B H X X L L L L L L L L Select C X X X L L L L H H H H B X X X L L H H L L H H A X X X L H L H L H L H Outputs Y0 H H H L H H H H H H H Y1 H H H H L H H H H H H Y2 H H H H H L H H H H H Y3 H H H H H H L H H H H Y4 H H H H H H H L H H H Y5 H H H H H H H H L H H Y6 H H H H H H H H H L H Y7 H H H H H H H H H H L HD74HC138 Pin Arrangement A 1 Select Inputs B 2 C 3 G2A 4 Enable Inputs G2B 5 G1 6 Output Y7 7 GND 8 (Top view)...
