M74HC123 is a high speed CMOS MONOSTABLE MULTIVIBRATOR fabricated with silicon gate C2MOS technology.
The M74HC123 is a high-speed CMOS monostable multivibrator fabricated with silicon gate CMOS technology. It features two trigger inputs (A and B) and a direct reset input (CLR), allowing for flexible triggering on negative or positive edges. The device is pin and function compatible with the 74 series 123.
| Output Pulse Width Range | 120 ns ~ 60 s |
|---|---|
| Standby State Current | 4 µA (MAX.) |
| Active State Current | 200 µA (MAX.) |
| Operating Temperature | -55 to 125 °C |
| Storage Temperature | -65 to +150 °C |
| Propagation Delay (Typical) | 23 ns |
The output pulse width is approximately given by the formula: tW(OUT) = 0.45 * Cx * Rx.
Taking CLR low breaks the monostable state and resets the flip-flop, returning the device to the standby state.
Yes, the device is pin and function compatible with the 74 series 123.