M54HC42/M74HC42 is a high performance CMOS BCD-TO-DECIMAL DECODER with LSTTL high speed performance and CMOS low power consumption.
The M54HC42 and M74HC42 are high‑speed CMOS BCD‑to‑decimal decoders with low power consumption. They decode a 4‑bit BCD input to ten decimal outputs, and can also function as a 3‑to‑8 line decoder when the D input is used as a disable.
The document lists electrical characteristics such as propagation delays, supply voltage range, output current capability, and power dissipation, as well as mechanical dimensions for plastic, ceramic, and PLCC packages. Absolute maximum ratings and recommended operating conditions are also provided.
| Typical propagation delay (tPHL) | 45 ns |
|---|---|
| Maximum output current per pin | 25 mA |
| Power dissipation (typical) | 500 mW |
| Operating temperature range (M54HC series) | -55 °C to +125 °C |
The typical tPHL propagation delay is 45 ns.
Each output pin can source or sink up to 25 mA.
The recommended operating temperature is –55 °C to +125 °C.