54abt16646 National Semiconductor Corporation, 54abt16646 Datasheet - Page 6

• Manufacturer Part Number: 54abt16646
• Description: 16-bit Transceivers And Registers With Tri-state Outputs
• Manufacturer: National Semiconductor Corporation

www.national.com
C
C
V
V
DC Electrical Characteristics
Note 4: For 8-bit toggling, I
Note 5: Guaranteed but not tested.
Note 6: 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
AC Operating Requirements
Capacitance
Sym-
IN
I/O
OLP
OLV
bol
t
t
t
t
t
t
Symbol
f
t
t
t
t
t
t
t
t
t
t
t
t
t
t
Symbol
(Note 7)
S
S
H
H
W
W
max
PLH
PHL
PLH
PHL
PLH
PHL
PZH
PZL
PHZ
PLZ
PZH
PZL
PHZ
PLZ
(H)
(L)
(H)
(L)
(H)
(L)
Symbol
Quiet Output Maximum Dynamic V
Quiet Output Minimum Dynamic V
CCD
Max Clock Frequency
Propagation Delay
Clock to Bus
Propagation Delay
Bus to Bus
Propagation Delay
SBA
Enable Time
OE
Disable Time
OE
Enable Time
DIR
Disable Time
DIR
Setup Time, HIGH
or LOW Bus to Clock
Hold Time, HIGH
or LOW Bus to Clock
Pulse Width,
HIGH or LOW
<
Input Capacitance
Output Capacitance
1.4 mA/MHz.
n
n
n
n
n
Parameter
to A
to A
to A
to A
or SAB
Parameter
Parameter
n
n
n
n
Parameter
or B
or B
or B
or B
n
n
n
to A
n
n
n
to B
OL
OL
(Continued)
n
6
Typ
Min
11
5
Min
4.0
0.5
4.3
Min
125
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
T
A
−1.5
T
Max
1.0
V
A
= −55˚C to +125˚C
CC
V
= −55˚C to +125˚C
C
CC
L
C
= 4.5V–5.5V
54ABT
Units
L
= 50 pF
= 4.5V–5.5V
54ABT
pF
pF
= 50 pF
Units
V
V
Max
V
V
V
5.0
5.0
CC
CC
CC
Max
6.9
7.7
5.8
7.0
7.1
7.2
6.4
6.5
7.6
6.5
6.4
6.7
8.1
7.1
= 0V (non I/O pins)
= 5.0V (A
C
T
T
A
A
L
Conditions
T
= 25˚C (Note 6)
= 25˚C (Note 6)
= 50 pF, R
A
n
= 25˚C
Conditions
, B
n
)
Units
Units
MHz
L
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
= 500Ω