M74HCT138 is a 74HCT series 3 to 8 line decoder, which can be compatible with TTL outputs.
The M74HCT138 is a high-speed CMOS 3-to-8 line decoder fabricated with silicon gate CMOS technology. It is designed to be compatible with TTL outputs and pin-compatible with the 74 series 138. The device features enable inputs to facilitate cascade connections and address decoding for memory systems, with all inputs equipped with protection circuits against static discharge and transient excess voltage.
| Propagation Delay (Typical) | 16ns |
|---|---|
| Quiescent Supply Current (Max) | 4uA |
| Operating Temperature Range | -55 to 125 °C |
| Power Dissipation | 500mW |
Yes, the device is compatible with TTL outputs with a minimum input voltage of 2V.
The device has three enable inputs: G1, G2A, and G2B.