74HC4538(2008) データシートの表示（PDF） - STMicroelectronics
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74HC4538 Datasheet PDF : 18 Pages
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Electrical characteristics
M74HC4538
Table 7.
AC electrical characteristics (CL = 50 pF, Input tr = tf = 6 ns)
Test condition
Value
Symbol
Parameter
VCC
(V)
TA = 25°C
-40 to 85°C
-55 to
125°C
Unit
Min Typ Max Min Max Min Max
2.0
tTLH tTHL
Output transition
time
4.5
6.0
30 75
8 15
7 13
95
110
19
22 ns
16
19
2.0
Propagation
tPLH tPHL delay time
4.5
(A, B - Q, Q)
6.0
120 250
315
375
30 50
63
75 ns
25 43
54
64
Propagation
2.0
tPLH tPHL delay time
4.5
(CD - Q, Q)
6.0
100 195
245
295
25 39
49
59 ns
20 33
42
50
2.0
Rx = 5 KΩ
540 1200
1500
1800
4.5 Cx=0 Rx = 1 KΩ
180 250
320
375 ns
6.0
Rx = 1 KΩ
150 200
260
320
tWOUT
Output pulse
width
2.0
70 83 96 70 96 70 96
4.5
Cx = 0.01 μF
Rx = 10 KΩ
69 77 85 69 85 69 85 μs
6.0
69 77 85 69 85 69 85
2.0
0.67 0.75 0.83 0.67 0.83 0.67 0.9
4.5
Cx = 0.1 μF
Rx = 10 KΩ
0.67 0.73 0.77 0.67 0.77 0.67 0.8 ms
6.0
0.67 0.73 0.77 0.67 0.77 0.67 0.8
Output pulse
ΔtWOUT
width error
between circuits
±1
%
in same package
2.0
Minimum pulse
tW(H) tW(L) width
4.5
(A,B)
6.0
30 75
8 15
7 13
95
110
19
22 ns
16
19
Minimum pulse
2.0
tW(L) width
4.5
(CD)
6.0
30 75
8 15
7 13
95
110
19
22 ns
16
19
2.0
tREM
Minimum clear
removal time
4.5
6.0
0 15
15
20
0
5
5
7 ns
0
5
5
8/18
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