DC Electrical Characteristics
Symbol
Parameter
Min
Max
Units
V
CC
Conditions
C
L
= 50 pF; R
L
=
500Ω
V
OLP
V
OLV
Quiet Output Maximum Dynamic V
OL
Quiet Output Minimum Dynamic V
OL
1.1
-1.7
V
V
5.0
5.0
T
A
= 25˚C (Note 7)
T
A
= 25˚C (Note 7)
Note 7:
Max number of outputs defined as (n). n − 1 data inputs are driven 0V to 3V. One output at LOW. Guaranteed, but not tested.
AC Electrical Characteristics
Symbol
Parameter
54ABT
T
A
= −55˚C to +125˚C
V
CC
= 4.5V–5.5V
C
L
= 50 pF
Min
f
max
t
PLH
t
PHL
t
PLH
t
PHL
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
Maximum Clock Frequency
Propagation Delay
A or B to B or A
Propagation Delay
LEAB or LEBA to B or A
Propagation Delay
CLKAB or CLKBA to B or A
Propagation Delay
OEAB or OEBA to B or A
Propagation Delay
OEAB or OEBA to B or A
150
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
6.5
7.0
7.0
7.8
7.5
8.0
6.3
6.5
7.2
6.8
ns
ns
ns
ns
Max
MHz
ns
Units
Fig.
No.
Figure 4
Figure 4
Figure 4
Figure 6
Figure 6
AC Operating Requirements
Symbol
Parameter
54ABT
T
A
= −55˚C to +125˚C
V
CC
= 4.5V–5.5V
C
L
= 50 pF
Min
t
s
(H)
t
s
(L)
t
h
(H)
t
h
(L)
t
s
(H)
t
s
(L)
t
h
(H)
t
h
(L)
t
s
(H)
t
s
(L)
t
h
(H)
t
h
(L)
t
s
(H)
t
s
(L)
t
h
(H)
t
h
(L)
t
w
(H)
t
w
(L)
Setup Time,
A to CLKAB
Hold Time,
A to CLKAB
Setup Time,
B to CLKBA
Hold Time,
B to CLKBA
Setup Time, A to LEAB
or B to LEBA, CLK High
Hold Time, A to LEAB
or B to LEBA, CLK High
Setup Time, A to LEAB
or B to LEBA, CLK Low
Hold Time, A to LEAB
or B to LEBA, CLK Low
Pulse Width,
LEAB or LEBA, High
4.5
4.5
0
0
4.0
4.0
0
0
1.5
1.5
1.5
1.5
4.5
4.5
1.5
1.5
3.3
3.3
ns
ns
ns
ns
ns
ns
ns
ns
Max
ns
Units
Fig.
No.
Figure 7
Figure 7
Figure 7
Figure 7
Figure 7
Figure 7
Figure 7
Figure 7
Figure 5
5
www.national.com
PrintDate=1998/07/14 PrintTime=11:08:55 43605 ds100225 Rev. No. 1
cmserv
Proof
5
NSC [ NATIONAL SEMICONDUCTOR ]
