74221 - Dual Non-Retriggerable Monostable Multivibrator

Fairchild (now onsemi)

Datasheet Details

Part number	74221
Manufacturer	Fairchild (now onsemi)
File Size	108.83 KB
Description	Dual Non-Retriggerable Monostable Multivibrator
Datasheet	74221 Datasheet

The MM74HC221A high speed monostable multivibrators (one shots) utilize advanced silicon-gate CMOS technology.

They

MM74HC221A Dual Non-Retriggerable Monostable Multivibrator September 1983 Revised February 1999 MM74HC221A Dual Non-Retriggerable Monostable.

both a negative, A, and a positive, B, transition triggered input, either of which can be used as an inhibit input. Also included is a clear input that when taken low resets the one shot. The MM74HC221A can be triggered on the positive transition of the clear while A is held LOW and B is held HIGH. The MM74HC221A is a non-retriggerable, and therefore cannot be retriggered until the output pulse times out. Pulse width stability over a wide range of temperature and supply is achieved using linear.

Brand Logo	Part Number	Description	Manufacturer
	74221	Dual non-retriggerable monostable multivibrator	NXP
	74221	Dual Monostable Multivibrators	Hitachi Semiconductor

Part Number	Description
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74245	3-STATE Octal Bus Transceiver
7425	Dual 4-Input NOR Gate
7427	Triple 3-Input NOR Gate
74273	Octal D-Type Flip-Flops
74279	Quad S-R Latch
74283	4-Bit Binary Adder