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74HC4538 Datasheet(数据表) 6 Page - NXP Semiconductors

部件型号  74HC4538
说明  Dual retriggerable precision monostable multivibrator
下载  13 Pages
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制造商  PHILIPS [NXP Semiconductors]
网页  http://www.nxp.com
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74HC4538 Datasheet(HTML) 6 Page - NXP Semiconductors

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September 1993
6
Philips Semiconductors
Product specification
Dual retriggerable precision monostable
multivibrator
74HC/HCT4538
DC CHARACTERISTICS FOR 74HC
For the DC characteristics see
“74HC/HCT/HCU/HCMOS Logic Family Specifications”.
Output capability: standard
ICC category: MSI
AC CHARACTERISTICS FOR 74HC
GND = 0 V; tr = tf = 6 ns; CL = 50 pF
SYMBOL
PARAMETER
Tamb (°C)
UNIT
TEST CONDITIONS
74HC
VCC
(V)
OTHER
+25
−40 to +85
−40 to +125
min.
typ.
max.
min.
max.
min.
max.
tPLH
propagation delay
nA0,nA1 to nQ
85
31
25
265
53
45
330
66
56
400
80
68
ns
2.0
4.5
6.0
Fig.8
tPHL
propagation delay
nA0,nA1 to nQ
83
30
24
265
53
45
330
66
56
400
80
68
ns
2.0
4.5
6.0
Fig.8
tPHL
propagation delay
nRD to nQ
80
29
23
265
53
45
330
66
56
400
80
68
ns
2.0
4.5
6.0
Fig.8
tPLH
propagation delay
nRD to nQ
83
30
24
265
53
45
340
68
58
400
80
68
ns
2.0
4.5
6.0
Fig.8
tTHL/ tTLH
output transition
time
19
7
6
75
15
13
95
19
16
110
22
19
ns
2.0
4.5
6.0
Fig.8
tW
nA0 pulse width
LOW
80
16
14
17
6
5
100
20
17
120
24
20
ns
2.0
4.5
6.0
Fig.8
tW
nA1 pulse width
HIGH
80
16
14
17
6
5
100
20
17
120
24
20
ns
2.0
4.5
6.0
Fig.8
tW
nRD pulse width
LOW
80
16
14
19
7
6
100
20
17
120
24
20
ns
2.0
4.5
6.0
Fig.8
tW
nQ, nQ pulse width
HIGH or LOW
0.63 0.70
0.77
0.602 0.798
0.595 0.805
ms
5.0
Fig.8;
Rt = 10 kΩ;
Ct = 0.1 µF
trem
removal time
RD to nA0,nA1
35
7
6
6
2
2
45
9
8
55
11
9
ns
2.0
4.5
6.0
Fig.8




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