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74HCT423

Part Number	74HCT423
Manufacturer	Philips
Description	Dual retriggerable monostable multivibrator
Published	Apr 23, 2005
Detailed Description	74HC423; 74HCT423 Dual retriggerable monostable multivibrator with reset Rev. 6 — 19 December 2011 Product data sheet...
Datasheet	74HCT423 PDF File

Overview

74HC423; 74HCT423 Dual retriggerable monostable multivibrator with reset Rev.
6 — 19 December 2011 Product data sheet 1.
General description 74HC423; 74HCT423 are high-speed Si-gate CMOS devices that are pin compatible with Low power Schottky TTL (LSTTL).
They are specified in compliance with JEDEC standard no.
7A.
The 74HC423; 74HCT423 dual retriggerable monostable multivibrator with reset has two methods of output pulse width control.
1.
The minimum pulse width is essentially determined by the selection of an external resistor (REXT) and capacitor (CEXT), see Section 12.
1.
2.
Once triggered, the basic output pulse width may be extended by retriggering the gated active LOW-going edge input (nA) or the active HIGH-going edge input (nB).
By repeating this process, the output pulse period (nQ = HIGH, nQ = LOW) can be made as long as desired.
When nRD is LOW, it forces the nQ output LOW, the nQ output HIGH and also inhibits the triggering.
Figure 10 and Figure 11 illustrate pulse cont...

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