74HCT4538DB 查看數據表（PDF） - NXP Semiconductors.
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74HCT4538DB Datasheet PDF : 24 Pages
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NXP Semiconductors
74HC4538; 74HCT4538
Dual retriggerable precision monostable multivibrator
10. Dynamic characteristics
Table 7. Dynamic characteristics
Voltages are referenced to GND (ground = 0 V); for test circuit see Figure 9.
Symbol Parameter Conditions
25 °C
Min
74HC4538
tPLH
LOW to HIGH nA, nB to nQ;
propagation see Figure 7
delay
VCC = 2.0 V
-
VCC = 4.5 V
-
VCC = 5.0 V; CL = 15 pF
-
VCC = 6.0 V
-
nCD to nQ; see Figure 7
VCC = 2.0 V
-
VCC = 4.5 V
-
VCC = 6.0 V
-
tPHL
HIGH to LOW nA, nB to nQ;
propagation see Figure 7
delay
VCC = 2.0 V
-
VCC = 4.5 V
-
VCC = 5.0 V; CL = 15 pF
-
VCC = 6.0 V
-
nCD to nQ; see Figure 7
VCC = 2.0 V
-
VCC = 4.5 V
-
VCC = 6.0 V
-
tt
transition time nQ and nQ; see Figure 7 [2]
VCC = 2.0 V
-
VCC = 4.5 V
-
VCC = 6.0 V
-
Typ[1]
85
31
27
25
83
30
24
83
30
27
24
80
29
23
19
7
6
Max
265
53
-
45
265
53
45
265
53
-
45
265
53
45
75
15
13
−40 °C to
+85 °C
Min Max
-
330
-
66
-
-
-
56
-
340
-
68
-
58
-
330
-
66
-
-
-
56
-
330
-
66
-
56
-
95
-
19
-
16
−40 °C to Unit
+125 °C
Min Max
-
400 ns
-
80 ns
-
- ns
-
68 ns
-
400 ns
-
80 ns
-
68 ns
-
400 ns
-
80 ns
-
- ns
-
68 ns
-
400 ns
-
80 ns
-
68 ns
-
119 ns
-
22 ns
-
19 ns
74HC_HCT4538_3
Product data sheet
Rev. 03 — 8 June 2009
© NXP B.V. 2009. All rights reserved.
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