74FR244 Fairchild, 74FR244 Datasheet - Page 3

• Manufacturer Part Number: 74FR244
• Description: Octal Buffer/Line Driver with 3-STATE Outputs
• Manufacturer: Fairchild

AC Electrical Characteristics
Extended AC Characteristics
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, 3-STATE-to-HIGH, etc.
Note 4: These specifications 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. This specification pertains to single output switching only.
Note 5: Skew is defined as the absolute value of the difference between the actual propagation delays for any two outputs of the same device. The specifi-
cation applies to any outputs switching HIGH-to-LOW, (t
teed with all outputs switching in phase.
Symbol
Symbol
t
t
OSHL
OSLH
t
t
t
t
t
t
t
t
t
t
t
t
t
PLH
PHL
PZH
PZL
PHZ
PLZ
OST
PLH
PHL
PZH
PZL
PHZ
PLZ
Propagation Delay
Output Enable Time
Output Disable Time
Pin-to-Pin Skew
for HL Transitions (Note 5)
Pin-to-Pin Skew
for LH Transitions (Note 5)
Pin-to-Pin Skew
for HL/LH Transitions (Note 5)
Propagation Delay
Output Enable Time
Output Disable Time
Parameter
Parameter
OSHL
), LOW-to-HIGH, (t
3
Min
1.0
1.0
2.5
2.5
1.6
1.6
OSLH
Eight Outputs Switching
), or HIGH-to-LOW and/or LOW-to-HIGH, (t
V
T
C
T
Min
1.0
1.0
2.5
2.5
1.6
1.6
CC
A
A
L
V
Typ
C
2.6
1.8
4.8
3.9
3.7
3.6
CC
50 pF
0 C to 70 C
(Note 3)
L
25 C
5.0V
50 pF
5.0V
Max
5.0
5.0
7.7
7.7
6.5
6.5
1.6
1.0
3.5
Max
3.9
3.9
6.6
6.6
6.4
6.4
T
Min
2.3
2.3
T
A
Min
1.0
1.0
2.5
2.5
1.6
1.6
A
V
C
V
CC
L
C
0 C to 70 C
(Note 4)
CC
0 C to 70 C
L
250 pF
OST
50 pF
www.fairchildsemi.com
5.0V
). Specification guaran-
5.0V
Max
7.3
7.3
Max
3.9
3.9
6.6
6.6
6.4
6.4
Units
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns