MC74HC4538A_16 Datasheet, PDF (5/14 Pages) ON Semiconductor – Dual Precision Monostable Multivibrator

MC74HC4538A
AC CHARACTERISTICS (C_L = 50 pF, Input t_r = t_f = 6.0 ns)
V_CC
Symbol
Parameter
V
t_PLH Maximum Propagation Delay
2.0
Input A or B to Q
4.5
(Figures 5 and 7)
6.0
t_PHL Maximum Propagation Delay
2.0
Input A or B to NQ
4.5
(Figures 5 and 7)
6.0
t_PHL Maximum Propagation Delay
2.0
Reset to Q
4.5
(Figures 6 and 7)
6.0
t_PLH Maximum Propagation Delay
2.0
Reset to NQ
4.5
(Figures 6 and 7)
6.0
t_TLH, Maximum Output Transition Time, Any Output
2.0
t_THL
(Figures 6 and 7)
4.5
6.0
C_in Maximum Input Capacitance
(A. B, Reset) −
(C_x, R_x)
Guaranteed Limits
–55 to 25_C
≤ 85_C
≤ 125_C
Min Max Min Max Min Max Unit
175
220
265 ns
35
44
53
30
37
45
195
245
295 ns
39
49
59
33
42
50
175
220
265 ns
35
44
53
30
37
45
175
220
265 ns
35
44
53
30
37
45
75
95
110 ns
15
19
22
13
16
19
10
10
10
pF
25
25
25
Typical @ 25°C, V_CC = 5.0 V
C_PD Power Dissipation Capacitance (per Multivibrator)*
150
pF
*Used to determine the no−load dynamic power consumption: P_D = C_PD V_CC2f + I_CC V_CC.
TIMING CHARACTERISTICS (Input t_r = t_f = 6.0 ns)
Symbol
Parameter
t_rr
Minimum Retrigger Time, Input A or B
(Figure 6) (Note 7)
t_rec Minimum Recovery Time, Inactive to A or B
(Figure 6)
t_w
Minimum Pulse Width, Input A or B
(Figure 5)
t_w
Minimum Pulse Width, Reset
(Figure 6)
t_r, t_f Maximum Input Rise and Fall Times, Reset
(Figure 6)
A or B
(Figure 6)
7.
t_rr(ns)
+
V_CC
(volts)
30.5
C_x
(pF)
Guaranteed Limits
–55 to 25_C
≤ 85_C
≤ 125_C
V_CC
V
Min Max Min Max Min Max Unit
2.0
−
−
ns
4.5
−
−
6.0
−
−
2.0
0
0
0
ns
4.5
0
0
0
6.0
0
0
0
2.0 60
75
90
ns
4.5 12
15
18
6.0 10
13
15
2.0 60
75
90
ns
4.5 12
15
18
6.0 10
13
15
2.0
1000
1000
1000 ns
4.5
500
500
500
6.0
400
400
400
2.0
4.5
No Limit
6.0
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