74ABT NSC [National Semiconductor], 74ABT Datasheet - Page 5

• Manufacturer Part Number: 74ABT
• Description: Octal Transparent Latch with TRI-STATE Outputs
• Manufacturer: NSC [National Semiconductor]

Symbol
t
t
t
t
t
t
t
t
PLH
PHL
PLH
PHL
PZH
PZL
PHZ
PZL
Extended AC Electrical Characteristics
(SOIC package)
Note 4 This specification is guaranteed but not tested The limits apply to propagation delays for all paths described switching in phase (i e all LOW-to-HIGH
HIGH-to-LOW etc )
Note 5 This specification is guaranteed but not tested The limits represent propagation delay with 250 pF load capacitors in plce of the 50 pF load capacitors in
the standard AC load This specificaiton pertains to single output switching only
Note 6 This specification is guaranteed but not tested The limits represent propagation delays for all paths described switching in phase (i e all LOW-to-HIGH
HIGH-to-LOW etc ) with 250 pF load capacitors in place of the 50 pF load capacitors in the standard AC load
Note 7 The TRI-STATE delay times are dominated by the RC network (500
Skew
Note 1 Skew is defined as the absolute value of the difference between the actual propagation delays for any two separate outputs of the same device The
specification applies to any outputs switching HIGH to LOW (t
(t
Note 2 Propagation delay variation for a given set of conditions (i e temperature and V
Note 3 This specification is guaranteed but not tested The limits apply to propagation delays for all paths described switching in phase (i e all LOW-to-HIGH
HIGH-to-LOW etc )
Note 4 This specification is guaranteed but not tested The limits represent propagation delays with 250 pF load capacitors in place of the 50 pF load capacitors in
the standard AC load
Note 5 This describes the difference between the delay of the LOW-to-HIGH and the HIGH-to-LOW transition on the same pin It is measured across all the
outputs (drivers) on the same chip the worst (largest delta) number is the guaranteed specification This specification is guaranteed but not tested
OST
t
(Note 1)
t
(Note 1)
t
(Note 5)
t
(Note 1)
t
(Note 2)
Symbol
OSHL
OSLH
PS
OST
PV
) This specification is guaranteed but not tested
Propagation Delay
D
Propagation Delay
LE to O
Output Enable Time
Output Disable Time
n
to O
Parameter
n
n
Pin to Pin Skew
HL Transitions
Pin to Pin Skew
LH Transitions
Duty Cycle
LH–HL Skew
Pin to Pin Skew
LH HL Transitions
Device to Device Skew
LH HL Transitions
Parameter
T
8 Outputs Switching
A
V
Min
1 5
1 5
1 5
1 5
1 5
1 5
1 0
1 0
CC
e b
C
e
L
(Note 4)
74ABT
40 C to
4 5V to 5 5V
e
50 pF
a
OSHL
Max
5 2
5 2
5 5
5 5
6 2
6 2
5 5
5 5
85 C
T
) LOW to HIGH (t
8 Outputs Switching
A
V
e b
CC
C
L
e
(Note 3)
74ABT
40 C to
e
Max
4 5V–5 5V
1 0
1 0
1 4
1 5
2 0
250 pF) on the output and has been excluded from the datasheet
5
T
50 pF
A
Min
V
2 0
2 0
2 0
2 0
2 0
2 0
CC
e b
OSLH
a
C
CC
e
L
85 C
) from device to device This specification is guaranteed but not tested
(Note 5)
(Note 7)
74ABT
40 C to
) or any combination switching LOW to HIGH and or HIGH to LOW
e
4 5V to 5 5V
250 pF
a
Max
6 8
6 8
7 5
7 5
8 0
8 0
85 C
T
8 Outputs Switching
A
V
e b
CC
C
L
e
(Note 4)
74ABT
40 C to
e
T
Max
1 5
1 5
3 5
3 9
4 0
4 5V–5 5V
8 Outputs Switching
A
V
Min
250 pF
2 0
2 0
2 0
2 0
2 0
2 0
CC
e b
C
e
L
a
(Note 6)
(Note 7)
74ABT
40 C to
e
85 C
4 5V to 5 5V
250 pF
a
Max
10 5
10 5
9 0
9 0
9 5
9 5
85 C
Units
ns
ns
ns
ns
ns
Units
ns
ns
ns
ns