HD74HC221 - Dual Monostable Multivibrators (with Schmitt Trigger Input)

Product Overview

Hitachi Semiconductor

Part number	HD74HC221
Manufacturer	Hitachi Semiconductor
File Size	53.57 KB
Description	Dual Monostable Multivibrators (with Schmitt Trigger Input)
Datasheet	HD74HC221 Datasheet
Additional preview pages of the HD74HC221 datasheet.

Each multivibrator

both a negative, A, and a positive, B, transition triggered input, either of which can be used as an inhibit. Also included is a clear inpt that when taken low resets the one shot. The HD74HC221 can be triggered on the positive transition of teh clear while A is held low and B is held high. This device is a non-retriggerable, and therefore cannot be retriggered until the output pulse times out. The output pulse equation is simply: tW = 0.7.
(Rext).
(Cext) Features.

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Published: Mar 23, 2005 |