54abt646 National Semiconductor Corporation, 54abt646 Datasheet - Page 6

• Manufacturer Part Number: 54abt646
• Description: Octal Transceivers And Registers With Tri-state Outputs
• Manufacturer: National Semiconductor Corporation

www.national.com
f
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
max
PLH
PHL
PLH
PHL
PLH
PHL
PZH
PZL
PHZ
PLZ
PZH
PZL
PHZ
PLZ
S
S
H
H
W
W
C
C
DC Electrical Characteristics
Note 4: For 8-bit toggling, I
Note 5: Guaranteed but not tested.
AC Electrical Characteristics
AC Operating Requirements
(H)
(L)
Capacitance
Note 6: C
(H)
(L)
(H)
(L)
IN
I/O
Symbol
Symbol
(Note 6)
Symbol
I/O
is measured at frequency, f = 1 MHz, per MIL-STD-883B, Method 3012.
Max Clock Frequency
Propagation Delay
Clock to Bus
Propagation Delay
Bus to Bus
Propagation Delay
SBA or SAB to A
Enable Time
OE to A
Disable Time
OE to A
Enable Time
DIR to A
Disable Time
DIR to A
Setup Time, HIGH
or LOW Bus to Clock
Hold Time, HIGH
or LOW Bus to Clock
Pulse Width,
HIGH or LOW
CCD
n
n
n
n
<
or B
or B
Input Capacitance
Output Capacitance
or B
or B
1.4 mA/MHz.
Parameter
Parameter
n
n
n
n
n
Parameter
to B
n
(Continued)
Min
125
2.2
1.7
1.5
1.5
1.5
1.5
1.0
1.9
1.5
1.5
1.0
2.2
1.5
1.5
T
A
6
Typ
Min
3.5
1.0
4.0
V
11
5
= −55˚C to +125˚C
T
CC
A
C
V
= −55˚C to +125˚C
L
= 4.5V–5.5V
CC
54ABT
= 50 pF
C
L
= 4.5V–5.5V
54ABT
= 50 pF
Units
Max
pF
pF
8.8
8.8
7.9
7.9
8.1
8.9
7.3
8.8
9.3
9.3
7.7
9.5
8.7
9.2
Max
V
V
CC
CC
= 0V (non I/O pins)
= 5.0V (A
Units
MHz
ns
ns
ns
ns
ns
ns
ns
Units
ns
ns
ns
Conditions
T
A
n
= 25˚C
, B
n
)
Figure 10
Figure 10
Figure 10
Figure 10
Figure 8
Figure 8
Figure 8
Figure 11
Figure 11
Fig.
Figure 9
No.
Fig.
No.