U74HC123L-P16-T datasheet(10/10 Pages) UTC

Part #	U74HC123L-P16-T

Description	DUAL RETRIGGERABLE MONOSTABLE MULTIVIBRATOR WITH RESET

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Manufacturer	UTC [Unisonic Technologies]

Direct Link	http://www.utc-ic.com

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10 / 10 page

U74HC123

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

10 of 10

www.unisonic.com.tw

QW-R502-A10.A



APPLICATION INFORMATION(Cont.)

Power-down considerations

A large capacitor (CEXT) may cause problems when powering-down the monostable due to the energy stored in

this capacitor. When a system containing this device is powered-down or a rapid decrease of VCC to zero occurs, the

monostable may substain damage, due to the capacitor discharging through the input protection diodes. To avoid

this possibility, use a damping diode (DEXT) preferably a germanium or Schottky type diode able to withstand large

current surges and connect as shown below.

UTC assumes no responsibility for equipment failures that result from using products at values that

exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or

other parameters) listed in products specifications of any and all UTC products described or contained

herein. UTC products are not designed for use in life support appliances, devices or systems where

malfunction of these products can be reasonably expected to result in personal injury. Reproduction in

whole or in part is prohibited without the prior written consent of the copyright owner. The information

presented in this document does not form part of any quotation or contract, is believed to be accurate

and reliable and may be changed without notice.

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