SL74HC123
AC ELECTRICAL CHARACTERISTICS
(C
L
=50pF,Input t
r
=t
f
=6.0 ns)
V
CC
Symbol
t
PLH
, t
PHL
Parameter
Maximum Propagation Delay, Input A or B to Q or
Q (Figures 1 and 3)
Maximum Propagation Delay , CLR to Q or Q
(Figures 2 and 3)
Maximum Output Transition Time, Any
Output(Figures 2 and 3)
Maximum Input Capacitance
A, B, CLR
C
X
, R
X
V
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
-
Guaranteed Limit
25
°C
to
-55°C
255
50
45
215
45
35
75
16
14
10
25
≤85
°C
320
65
55
270
55
45
95
20
17
10
25
≤125
°C
385
75
65
325
65
55
110
22
20
10
25
Unit
ns
t
PLH
, t
PHL
ns
t
TLH
, t
THL
ns
C
IN
pF
Power Dissipation Capacitance
(Per Multivibrator)
C
PD
Used to determine the no-load dynamic power
consumption:
P
D
=C
PD
V
CC2
f+I
CC
V
CC
Typical @25°C,V
CC
=5.0 V
150
pF
TIMING REQUIREMENTS
(C
L
=50pF,Input t
r
=t
f
=6.0 ns)
V
CC
Symbol
t
rec
Parameter
Minimum Recovery Time,
Inactive to A or B
(Figure 2)
Minimum Pulse Width,
Input A or B (Figure 1)
Minimum Pulse Width,
CLR (Figure 2)
Maximum Input Rise and
Fall Times, CLR
(Figure 2)
A or B (Figure 2)
V
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
25
°C
to
-55°C
0
0
0
100
20
17
100
20
17
1000
500
400
Guaranteed Limit
≤85°C
0
0
0
125
25
20
125
25
20
1000
500
400
No Limit
≤125°C
0
0
0
150
30
25
150
30
25
1000
500
400
Unit
ns
t
w
ns
t
w
ns
t
r,
t
r
ns
SLS
System Logic
Semiconductor
SLS [ SYSTEM LOGIC SEMICONDUCTOR ]
