AC Electrical Characteristics
Note 10:
Voltage Range 5.0 is 5.0V
±
0.5V
(Continued)
AC Operating Requirements
V
CC
Symbol
Parameter
(V)
(Note 11)
54ACT
T
A
= −55˚C
to +125˚C
C
L
= 50 pF
Guaranteed
Minimum
t
s
Setup Time,
HIGH or LOW
P
n
to CP
t
h
t
s
Hold Time, HIGH or LOW
P
n
to CP
Setup Time,
HIGH or LOW
CEP to CP
t
h
t
s
Hold Time, HIGH or LOW
CEP to CP
Setup Time,
HIGH or LOW
CET to CP
t
h
t
s
Hold Time, HIGH or LOW
CET to CP
Setup Time,
HIGH or LOW
PE to CP
t
h
t
s
Hold Time, HIGH or LOW
PE to CP
Setup Time,
HIGH or LOW
U/D to CP
t
h
t
w
Hold Time, HIGH or LOW
U/D to CP
CP Pulse Width,
HIGH or LOW
Note 11:
Voltage Range 5.0 is 5.0V
±
0.5V
Fig.
Units
No.
5.0
5.0
4.5
2.5
ns
ns
5.0
5.0
9.0
2.5
ns
ns
5.0
5.0
9.0
2.5
ns
ns
5.0
5.0
6.5
2.0
ns
ns
5.0
5.0
5.0
9.0
2.0
5.0
ns
ns
ns
Capacitance
Symbol
C
IN
C
PD
Parameter
Input Capacitance
Power Dissipation
Capacitance
Typ
4.5
60.0
Units
pF
pF
Conditions
V
CC
= Open
V
CC
= 5.0V
www.national.com
8
NSC [ NATIONAL SEMICONDUCTOR ]
