54abt543 National Semiconductor Corporation, 54abt543 Datasheet - Page 5

• Manufacturer Part Number: 54abt543
• Description: Octal Registered Transceiver With Tri-state Outputs
• Manufacturer: National Semiconductor Corporation

C
C
AC Operating Requirements
Capacitance
Note 6: C
AC Loading
*Includes jig and probe capacitance
IN
I/O
t
t
t
t
t
t
t
t
t
(Note 6)
S
S
H
H
S
S
H
H
W
Symbol
(H)
(L)
(H)
(L)
(H)
(L)
(H)
(L)
(L)
Symbol
I/O
is measured at frequency, f = 1 MHz, PER MIL-STD-883, METHOD 3012.
FIGURE 1. Standard AC Test Load
Setup Time, HIGH or LOW
A
Hold Time, HIGH or LOW
A
Setup Time, HIGH or LOW
A
Hold Time, HIGH or LOW
A
Pulse Width, LOW
n
n
n
n
or B
or B
or B
or B
Input Capacitance
Output Capacitance
n
n
n
n
to LEBA or LEAB
to LEBA or LEAB
to CEAB or CEBA
to CEAB or CEBA
Parameter
Parameter
10021804
11.0
Typ
5
5.0
Min
3.5
3.0
2.0
2.0
3.3
2.5
2.0
2.0
3.5
T
A
Amplitude Rep. Rate
V
= −55˚C to +125˚C
CC
C
3V
L
FIGURE 3. Test Input Signal Requirements
= 4.5V–5.5V
54ABT
= 50 pF
Units
pF
pF
Input Pulse Requirements
1 MHz
FIGURE 2. V
Max
V
V
CC
CC
500 ns
t
w
= 0V (non I/O pins)
= 5.0V (A
Conditions: T
M
= 1.5V
Units
ns
ns
ns
ns
ns
2.5 ns
n
t
, B
r
n
)
A
www.national.com
= 25˚C
10021806
2.5 ns
Figure
Figure
Figure
Figure
Figure
t
Fig.
No.
f
7
7
7
7
5