參數(shù)資料
型號(hào): 74HC423DB
廠商: NXP SEMICONDUCTORS
元件分類(lèi): 諧振器
英文描述: Dual retriggerable monostable multivibrator with reset
中文描述: HC/UH SERIES, DUAL MONOSTABLE MULTIVIBRATOR, PDSO16
文件頁(yè)數(shù): 6/14頁(yè)
文件大?。?/td> 103K
代理商: 74HC423DB
1998 Jul 08
6
Philips Semiconductors
Product specification
Dual retriggerable monostable
multivibrator with reset
74HC/HCT423
DC CHARACTERISTICS FOR 74HC
For the DC characteristics see
“74HC/HCT/HCU/HCMOS Logic Family Specifications”
.
Output capability: standard (except for nR
EXT
/C
EXT
)
I
CC
category: MSI
AC CHARACTERISTICS FOR 74HC
GND = 0 V; t
r
= t
f
= 6 ns; C
L
= 50 pF
SYMBOL
PARAMETER
T
amb
(
°
C)
UNIT
TEST CONDITIONS
74HC
V
CC
(V)
WAVEFORMS/
NOTES
+
25
40 to
+
85
40 to
+
125
min. typ.
max
min
max
min.
max.
t
PHL
/ t
PLH
propagation delay
nA, nB to nQ, nQ
80
29
23
66
24
19
19
7
6
255
51
43
215
43
37
75
15
13
320
64
54
270
54
46
95
19
16
385
77
65
325
65
55
110
22
19
ns
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
C
EXT
= 0 pF;
R
EXT
= 5 k
t
PHL
/ t
PLH
propagation delay
nR
D
to nQ, nQ
ns
C
EXT
= 0 pF;
R
EXT
= 5 k
t
THL
/ t
TLH
output transition time
ns
t
W
trigger pulse width
nA = LOW
100
20
17
100
20
17
100
20
17
11
4
3
17
6
5
14
5
4
450
125
25
21
125
25
21
125
25
21
150
30
26
150
30
26
150
30
26
ns
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
5.0
Fig.7
t
W
trigger pulse width
nB = HIGH
ns
Fig.7
t
W
reset pulse width
nR
D
= LOW
ns
Fig.8
t
W
output pulse width
nQ = HIGH
nQ = LOW
output pulse width
nQ = HIGH
nQ = LOW
μ
s
C
EXT
= 100 nF;
R
EXT
= 10 k
;
Figs 7 and 8
C
EXT
= 0 pF;
R
EXT
= 5 k
;
note 1;
Figs 7 and 8
C
EXT
= 0 pF;
R
EXT
= 5 k
;
note 2; Fig. 7
Fig.9
t
W
75
ns
5.0
t
rt
retrigger time
nA, nB
110
ns
5.0
R
EXT
external timing resistor
10
2
no limits
1000
1000
k
2.0
5.0
5.0
C
EXT
external timing capacitor
pF
Fig.9; note 3
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