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