AC Operating Requirements (Continued)
54AC
=
VCC
(V)
TA −55˚C
Fig.
No.
Symbol
Parameter
to +125˚C
Units
=
(Note 9)
CL 50 pF
Guaranteed
Minimum
0.5
th
Hold Time, HIGH or LOW
CET to CP
3.3
5.0
3.3
5.0
ns
2.5
ts
Setup Time,
8.5
HIGH or LOW
PE to CP
6.5
ns
ns
th
ts
Hold Time, HIGH or LOW
PE to CP
3.3
5.0
3.3
5.0
0.5
2.0
Setup Time,
13.0
9.0
HIGH or LOW
U/D to CP
ns
ns
ns
th
Hold Time, HIGH or LOW
U/D to CP
3.3
5.0
3.3
5.0
0.5
2.0
5.0
5.0
tw
CP Pulse Width,
HIGH or LOW
±
Note 9: Voltage Range 3.3 is 3.3V 0.3V
±
Voltage Range 5.0 is 5.0V 0.5V
AC Electrical Characteristics
54ACT
=
VCC
(V)
TA −55˚C
Fig.
No.
Symbol
Parameter
to +125˚C
Units
MHz
ns
=
CL 50 pF
(Note 10)
Min
Max
fmax
Maximum Clock
Frequency
5.0
5.0
75
tPLH
Propagation Delay
CP to Qn
1.5
12.5
(PE HIGH or LOW)
Propagation Delay
CP to Qn
tPHL
5.0
5.0
5.0
5.0
5.0
5.0
5.0
1.5
1.5
1.5
1.5
1.5
1.5
1.5
12.5
16.5
16.5
13.5
13.5
14.5
14.5
ns
ns
ns
ns
ns
ns
ns
(PE HIGH or LOW)
Propagation Delay
CP to TC
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
Propagation Delay
CP to TC
Propagation Delay
CET to TC
Propagation Delay
CET to TC
Propagation Delay
U/D to TC
Propagation Delay
U/D to TC
7
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