AC Electrical Characteristics
V
CC
Symbol
Parameter
(V)
(Note 8)
Min
f
max
t
PLH
t
PHL
t
PLH
t
PHL
t
PLH
t
PHL
Maximum Clock
Frequency
Propagation Delay, CP to Q
n
(PE Input HIGH or LOW)
Propagation Delay, CP to Q
n
(PE Input HIGH or LOW)
Propagation Delay
CP to TC
Propagation Delay
CP to TC
Propagation Delay
CET to TC
Propagation Delay
CET to TC
Note 8:
Voltage Range 3.3 is 3.3V
±
0.3V
Voltage Range 5.0 is 5.0V
±
0.5V
54AC
T
A
= −55˚C
to +125˚C
C
L
= 50 pF
Max
MHz
13.5
9.5
12.5
9.5
16.5
11.0
15.0
11.0
11.0
7.5
12.0
9.0
ns
ns
ns
ns
ns
ns
55
90
1.0
1.5
1.0
1.5
1.0
1.5
1.0
1.5
1.0
1.5
1.0
1.5
Units
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
AC Operating Requirements
V
CC
Symbol
Parameter
(V)
(Note 9)
t
s
t
h
t
s
t
h
t
s
t
h
t
s
t
h
t
w
t
w
Setup Time, HIGH or LOW
P
n
to CP
Hold Time, HIGH or LOW
P
n
to CP
Setup Time, HIGH or LOW
SR to CP
Hold Time, HIGH or LOW
SR to CP
Setup Time, HIGH or LOW
PE to CP
Hold Time, HIGH or LOW
PE to CP
Setup Time, HIGH or LOW
CEP or CET to CP
Hold Time, HIGH or LOW
CEP or CET to CP
Clock Pulse Width (Load)
HIGH or LOW
Clock Pulse Width (Count)
HIGH or LOW
Note 9:
Voltage Range 3.3 is 3.3V
±
0.3V
Voltage Range 5.0 is 5.0V
±
0.5V
54AC
T
A
= −55˚C
to +125˚C
C
L
= 50 pF
Guaranteed Minimum
17.0
11.0
−0.5
0
17.0
12.0
−0.5
0
16.0
9.5
−0.5
0
8.0
5.5
0
0.5
5.0
5.0
5.0
5.0
ns
ns
ns
ns
ns
ns
ns
ns
ns
Units
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
ns
7
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