M74HC221 is a double monostable multivibrator in the M74HC series, fabricated with silicon gate C2MOS technology. It features high speed, low power consumption, high noise immunity, symmetrical output impedance, balanced propagation delay and wide operating voltage range.
The M74HC221 is a high-speed CMOS dual monostable multivibrator fabricated with silicon gate C2MOS technology. It features two trigger inputs, A (negative edge) and B (positive edge), and a CLR input for direct reset. The device is pin and function compatible with the 74 series 221.
| Supply Voltage Range | 2V to 6V |
|---|---|
| Propagation Delay (Typical) | 24 ns |
| Standby Current (Max) | 4 µA |
| Active Current (Max) | 700 µA |
| Noise Immunity | 28% VCC |
| Output Current (Min) | 4 mA |
| Operating Temperature | -55 to 125 °C |
| Package Types | DIP, SOP, TSSOP |
The maximum supply voltage is 6V.
Yes, the device may also be triggered by using the CLR input because of the Schmitt-trigger input.
Yes, it is pin and function compatible with the 74 series 221.