74HC123A Datasheet, PDF (4/4 Pages) Rochester Electronics – Dual Retriggerable Monostable Multivibrator Typical propagation delay: 25 ns

74HC123A
AC Electrical Characteristics
V_CC = 5V, T_A = 25°C, C_L = 15 pF, t_r = t_f = 6 ns
Symbol
Parameter
Conditions
t_PLH
Maximum Trigger Propagation Delay
A, B or Clear to Q
t_PHL
Maximum Trigger Propagation Delay
A, B or Clear to Q
t_PHL
Maximum Propagation Delay, Clear to Q
t_PLH
t_W
t_REM
t_WQ(MIN)
t_WQ
Maximum Propagation Delay, Clear to Q
Minimum Pulse Width, A, B or Clear
Minimum Clear Removal Time
Minimum Output Pulse Width
Output Pulse Width
C_EXT = 28 pF
R_EXT = 2 kΩ
C_EXT = 1000 pF
R_EXT = 10 kΩ
Typ
Limit
Units
22
33
ns
25
42
ns
20
27
ns
22
33
ns
14
26
ns
0
ns
400
ns
10
µs
AC Electrical Characteristics
C_L = 50 pF t_r = t_f = 6 ns (unless otherwise specified)
Symbol
Parameter
Conditions
V_CC
T_A = 25°C
Typ
T_A = −40 to 85°C T_A = −55 to 125°C _Units
Guaranteed Limits
t_PLH
Maximum Trigger Propagation
Delay, A, B or Clear to Q
2.0V
77
169
194
4.5V
26
42
51
210
ns
57
ns
6.0V
21
32
39
44
ns
t_PHL
Maximum Trigger Propagation
Delay, A, B or Clear to Q
2.0V
88
197
229
4.5V
29
48
60
250
ns
67
ns
6.0V
24
38
46
51
ns
t_PHL
Maximum Propagation Delay
Clear to Q
2.0V
54
114
132
4.5V
23
34
41
143
ns
45
ns
6.0V
19
28
33
36
ns
t_PLH
Maximum Propagation Delay
Clear to Q
2.0V
56
116
135
4.5V
25
36
42
147
ns
46
ns
6.0V
20
29
34
37
ns
t_W
Minimum Pulse Width
A, B, Clear
2.0V
57
123
144
4.5V
17
30
37
157
ns
42
ns
6.0V
12
21
27
30
ns
t_REM
Minimum Clear
Removal Time
2.0V
4.5V
0
0
0
0
0
ns
0
ns
6.0V
0
0
0
ns
t_TLH, t_THL Maximum Output
Rise and Fall Time
2.0V
30
75
95
4.5V
8
15
19
110
ns
22
ns
6.0V
7
13
16
19
ns
t_WQ(MIN) Minimum Output
C_EXT = 28 pF
2.0V
1.5
Pulse Width
R_EXT = 2 kΩ
4.5V
450
R_EXT = 6 kΩ (V_CC = 2V) 6.0V
380
t_WQ
Output Pulse Width
C_EXT = 0.1 µF Min
5.0V
1
0.9
R_EXT = 10 kΩ Max
5.0V
1
1.1
C_IN
Maximum Input
12
20
Capacitance (Pins 7 & 15)
0.86
1.14
20
µs
ns
ns
0.85
ms
1.15
ms
20
pF
C_IN
Maximum Input
Capacitance (other inputs)
6
10
10
10
pF
C_PD
Power Dissipation
(Note 5)
70
pF
Capacitance
Note 5: C_PD determines the no load dynamic power consumption, P_D = C_PD V_CC2 f + I_CC V_CC, and the no load dynamic current consumption,
I_S = C_PD V_CC f + I_CC.
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the right to make changes without further notice to any specification herein.
Specification Number 74HC123-I (F) Rev C
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