74HC42D,652 查看數據表（PDF） - NXP Semiconductors.
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74HC42D,652 Datasheet PDF : 23 Pages
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NXP Semiconductors
74HC423; 74HCT423
Dual retriggerable monostable multivibrator with reset
106
tW
(ns)
105
104
103
102
001aaa611
(1)
(2)
(3)
(4)
0.8
'K' factor
0.6
0.4
0.2
001aaa612
10
1
10
102
103
104
CEXT (pF)
0
0
2
4
6
8
VCC (V)
VCC = 5.0 V and Tamb = 25 °C.
(1) REXT = 100 kΩ.
(2) REXT = 50 kΩ.
(3) REXT = 10 kΩ.
(4) REXT = 2 kΩ.
Fig 8. Typical output pulse width as a function of the
external capacitor values
External capacitance = 10 nF,
external resistance = 10 kΩ to 100 kΩ and Tamb = 25 °C.
Fig 9. Typical ‘K’ factor
nB input
tW
nA input
trt
nQ output
tW
tW
tW
nRD = HIGH.
Fig 10. Output pulse control using retrigger pulse (trtrig)
tW
mna521
74HC_HCT423_3
Product data sheet
Rev. 03 — 24 July 2008
© NXP B.V. 2008. All rights reserved.
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