74hct423 NXP Semiconductors, 74hct423 Datasheet - Page 6

• Manufacturer Part Number: 74hct423
• Description: Dual Retriggerable Monostable Multivibrator With Reset
• Manufacturer: NXP Semiconductors

Philips Semiconductors
DC CHARACTERISTICS FOR 74HC
For the DC characteristics see
Output capability: standard (except for nR
I
AC CHARACTERISTICS FOR 74HC
GND = 0 V; t
1998 Jul 08
CC
t
t
t
t
t
t
t
t
t
R
C
SYMBOL
PHL
PHL
THL
W
W
W
W
W
rt
Dual retriggerable monostable
multivibrator with reset
EXT
EXT
category: MSI
/ t
/ t
/ t
TLH
PLH
PLH
r
propagation delay
propagation delay
output transition time
trigger pulse width
trigger pulse width
reset pulse width
output pulse width
output pulse width
retrigger time
external timing resistor
external timing capacitor
= t
nA, nB to nQ, nQ
nR
nA = LOW
nB = HIGH
nR
nQ = HIGH
nQ = LOW
nQ = HIGH
nQ = LOW
nA, nB
f
D
D
= 6 ns; C
PARAMETER
to nQ, nQ
= LOW
L
= 50 pF
“74HC/HCT/HCU/HCMOS Logic Family Specifications”
100
20
17
100
20
17
100
20
17
2
min. typ. max min max min. max.
10
no limits
EXT
/C
80
29
23
66
24
19
19
7
6
11
4
3
17
6
5
14
5
4
450
75
110
EXT
25
)
255
51
43
215
43
37
75
15
13
1000
1000
T
6
amb
74HC
125
25
21
125
25
21
125
25
21
40 to 85
( C)
320
64
54
270
54
46
95
19
16
150
30
26
150
30
26
150
30
26
40 to 125
385
77
65
325
65
55
110
22
19
.
ns
ns
ns
ns
ns
ns
ns
ns
k
pF
UNIT
s
74HC/HCT423
V
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
5.0
5.0
5.0
2.0
5.0
5.0
(V)
TEST CONDITIONS
CC
Product specification
C
R
C
R
Fig.7
Fig.7
Fig.8
C
R
Figs 7 and 8
C
R
note 1;
Figs 7 and 8
C
R
note 2; Fig. 7
Fig.9
Fig.9; note 3
WAVEFORMS/
EXT
EXT
EXT
EXT
EXT
EXT
EXT
EXT
EXT
EXT
NOTES
= 0 pF;
= 5 k
= 0 pF;
= 5 k
= 100 nF;
= 10 k ;
= 0 pF;
= 5 k ;
= 0 pF;
= 5 k ;