AC Electrical Characteristics
V
CC
e
5V
Symbol
t
PHL
t
PLH
t
PHL
t
PLH
t
PZH
t
PZL
t
PHZ
t
PLZ
Parameter
Maximum Propagation
Delay Select A or B to Y
Maximum Propagation
Delay any Data to Y
Maximum Output Enable Time
Y Output to a Logic Level
Maximum Output Disable Time
Y Output to High Impedance State
T
A
e
25 C t
r
e
t
f
e
6 ns C
L
e
15 pF
Conditions
Typ
24
18
R
L
e
1 kX
R
L
e
1 kX
13
18
Guaranteed Limit
30
23
18
27
Units
ns
ns
ns
ns
AC Electrical Characteristics
C
L
e
50 pF
Symbol
Parameter
Conditions
t
r
e
t
f
e
6 ns (unless otherwise specified)
V
CC
2 0V
4 5V
6 0V
2 0V
4 5V
6 0V
T
A
e
25 C
Typ
74HC
54HC
T
A
eb
40 to 85 C T
A
eb
55 to 125 C Units
Guaranteed Limits
158
35
30
126
28
23
90
20
17
135
30
25
75
15
13
10
198
44
38
158
35
29
113
25
21
169
38
31
95
19
16
10
237
53
45
189
42
35
135
30
26
203
45
38
110
22
19
10
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
pF
pF
pF
t
PHL
t
PLH
Maximum Propagation
Delay Select A or B to Y
t
PHL
t
PLH
Maximum Propagation
Delay any Data to Y
t
PZH
t
PZL
Maximum Output Enable Time
R
L
e
1 kX
131
29
24
99
22
19
63
14
12
90
20
17
30
8
7
5
2 0V
4 5V
6 0V
2 0V
4 5V
6 0V
2 0V
4 5V
6 0V
t
PHZ
t
PLZ
Maximum Output Disable Time R
L
e
1 kX
t
THL
t
TLH
Maximum Output Rise
and Fall Time
C
IN
C
PD
Maximum Input Capacitance
Power Dissipation
Capacitance (Note 5)
(per package)
Outputs Enabled
Outputs Disabled
90
25
Note 5
C
PD
determines the no load dynamic power consumption P
D
e
C
PD
V
CC2
f
a
I
CC
V
CC
and the no load dynamic current consumption I
S
e
C
PD
V
CC
f
a
I
CC
Logic Diagram
TL F 5108 鈥?2
3