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| 74HC423D.653 Datasheet, PDF (11/24 Pages) NXP Semiconductors – Dual retriggerable monostable multivibrator with reset | |||
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NXP Semiconductors
11. Waveforms
74HC423; 74HCT423
Dual retriggerable monostable multivibrator with reset
VI
nB input
GND
VM
tW
VI
nA input
GND
VI
nRD input
GND
VOH
nQ output
VOL
VOH
nQ output
VOL
tPLH
VM
tW
tPHL
VM
tW
VM
tW
tW
VM
tPLH
tPHL (reset)
VY
tTLH
tPHL
VX
tTHL
VY
tPLH (reset)
VX
tTHL
tTLH
Fig 7.
Measurement points are given in Table 8.
VOL and VOH are typical voltage output levels that occur with the output load.
Pulse widths, propagation delays from inputs (nA, nB, nRD) to outputs (nQ, nQ) and
output transition times
tPLH
tPHL
001aah911
Table 8. Measurement points
Type
Input
VI
74HC423
VCC
74HCT423
3V
VM
0.5VCC
1.3 V
Output
VM
0.5VCC
1.3 V
VX
0.1VCC
0.1VCC
VY
0.9VCC
0.9VCC
74HC_HCT423
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 6 â 19 December 2011
© NXP B.V. 2011. All rights reserved.
11 of 24
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