MM74C221N Datasheet

Monostable Multivibrator


The MM74C221N dual monostable multivibrator is a monolithic complementary MOS integrated circuit. Each multivibrator features a negative-transition-triggered input and a positive-transition-triggered input, either of which can be used as an inhibit input, and a clear input. Once fired, the output pulses are independent of further transitions of the A and B inputs and are a function of the external timing components CEXT and REXT. The pulse width is stable over a wide range of temperature and VCC. Pulse stability will be limited by the accuracy of external timing components. The pulse width is approximately defined by the relationship tW(OUT) ≈ CEXT REXT. For further information and applications, see AN-138. MM74C221N Features • Wide supply voltage range: 4.5V to 15V• Guaranteed noise margin: 1.0V• High noise immunity: 0.45 VCC (typ.)• Low power TTL compatibility: fan out of 2 driving 74L


[{"Name":" Elements per Chip:","Value":"2"},{"Name":"Propagation Delay Time:","Value":"500 ns, 250 ns"},{"Name":"High Level Output Current:","Value":"- 8 mA"},{"Name":" Low Level Output Current:","Value":" 8 mA"},{"Name":"Supply Voltage - Max:","Value":"15 V"},{"Name":" Supply Voltage - Min:","Value":"4.5 V"},{"Name":"Maximum Operating Temperature:","Value":"+ 125 C"},{"Name":"Minimum Operating Temperature:","Value":"- 55 C"},{"Name":"Operating Supply Voltage:","Value":"5 V, 9 V, 12 V"},{"Name":"","Value":""}]

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