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74HC_HCT221_CNV_15 Datasheet, PDF (11/15 Pages) NXP Semiconductors – Dual non-retriggerable monostable multivibrator with reset
Philips Semiconductors
Dual non-retriggerable monostable
multivibrator with reset
AC WAVEFORMS
Product specification
74HC/HCT221
Fig.7 Output pulse control; nRD = HIGH.
Fig.8 Output pulse control using reset input nRD;
nA = LOW.
(1) HC : VM = VM = 50%; VI = GND to VCC.
HCT : VM = VM = 1.3 V; VI = GND to 3 V.
Fig.10 Waveforms showing the triggering of One
Shot by input nA or input nB for one period
(tW) and minimum pulse widths of the trigger
inputs nA and nB.
(1) HC : VM = VM = 50%; VI = GND to VCC.
HCT : VM = VM = 1.3 V; VI = GND to 3 V.
Fig.9 Waveforms showing the removal times;
nRD to nA or nB.
December 1990
(1) HC : VM = VM = 50%; VI = GND to VCC.
HCT : VM = VM = 1.3 V; VI = GND to 3 V.
Fig.11 Waveforms showing the reset to nQ and nQ
output propagation delays.
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