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IN74HC221A

Part Number	IN74HC221A
Manufacturer	IK Semiconductor
Description	Dual Monostable Binary Up/Down Counter
Published	Dec 7, 2005
Detailed Description	TECHNICAL DATA IN74HC221A Dual Monostable Multivibrator The IN74HC221A is identical in pinout to the LS/ALS221. The dev...
Datasheet	IN74HC221A PDF File

Overview

TECHNICAL DATA IN74HC221A Dual Monostable Multivibrator The IN74HC221A is identical in pinout to the LS/ALS221.
The device inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LS/ALSTTL outputs.
There are two trigger inputs, A INPUT (negative edge) and B INPUT (positive edge).
These inputs are valid for rising/falling signals The device may also be triggered by using the RESET input (positiveedge) because of the Schmitt-trigger input; after triggering the output maintains the MONOSTABLE state for the time period determined by the external resistor REXT and capacitor CEXT.
Taking RESET low breaks this MONOSTABLE STATE.
If the next trigger pulse oc...

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IN74HC221A Dual Monostable Binary Up/Down Counter - IK Semiconductor

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