74HC123; 74HCT123
NXP Semiconductors
Dual retriggerable monostable multivibrator with reset
001aaa611
001aaa612
6
10
0.8
t
W
'K' factor
0.6
(ns)
(1)
(2)
5
4
3
2
10
(3)
(4)
10
10
10
0.4
0.2
0
10
2
3
4
1
10
10
10
10
(pF)
0
2
4
6
8
C
EXT
V
(V)
CC
VCC = 5.0 V; Tamb = 25 °C.
CEXT = 10 nF; REXT = 10 kΩ to 100 kΩ.
Tamb = 25 °C.
(1) REXT = 100 kΩ
(2) REXT = 50 kΩ
(3) REXT = 10 kΩ
(4) REXT = 2 kΩ
Fig 7. Typical output pulse width as a function of the
external capacitor value
Fig 8. 74HC123 typical ‘K’ factor as function of VCC
74HC_HCT123_5
© NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 05 — 13 July 2009
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