MM74C221 is a dual monostable multivibrator produced by Fairchild Semiconductor
The MM74C221 is a dual monostable multivibrator monolithic complementary MOS integrated circuit manufactured by Fairchild Semiconductor. It features negative-transition-triggered and positive-transition-triggered inputs, an inhibit input, and a clear input. The output pulse width is determined by external timing components CEXT and REXT and is stable over a wide range of temperature and supply voltage.
| Supply Voltage Range | 4.5V to 15V |
|---|---|
| Operating Temperature Range | -40°C to +85°C |
| Storage Temperature Range | -65°C to +150°C |
| Power Dissipation (PDIP) | 700 mW |
| Power Dissipation (SOIC) | 500 mW |
| Absolute Maximum VCC | 18V |
| Noise Margin | 1.0V |
| Package Type | 16-Lead Plastic Dual-in-Line Package (PDIP) |
| Package Number | N16E |
The output pulse width is a function of the external timing components CEXT and REXT.
The pulse width is approximately defined by the relationship t W(OUT) ≈ CEXT REXT.
The typical propagation delay from input (A, B) to output (Q, Q) is 500 ns at VCC = 5V.