74138 is a 3 to 8 line decoder or multiplexer IC. this IC is most suited for high-speed bipolar memory chip select address decoding. The device is made of Schottky diode which makes is a high-speed device and compatible with TTL IC.
Specification:
- Voltage supply: 4.5-5.5V
- Typical voltage supply: 5V
- Maximum clock frequency: 30MHz
- High-level output current: -800µA
- Low-level output current: 16mA
- High-level input voltage: 2V
- Low-level input voltage: 0.8V
- Current rating: 5.2mA
- Propagation delay: 18ns
- High speed
- Low power consumption
- TTL compatible
- High noise immunity
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