www.fairchildsemi.com 4
74F240 • 74F241 • 74F244
AC Electrical Characteristics
Symbol Parameter
T
A
= +25°CT
A
= −55°C to +125°CT
A
= 0°C to +70°C
Units
V
CC
= +5.0V V
CC
= 5.0V V
CC
= 5.0V
C
L
= 50 pF C
L
= 50 pF C
L
= 50 pF
Min Typ Max Min Max Min Max
t
PLH
Propagation Delay 3.0 5.1 7.0 3.0 9.0 3.0 8.0
ns
t
PHL
Data to Output (74F240) 2.0 3.5 4.7 2.0 6.0 2.0 5.7
t
PZH
Output Enable Time (74F240) 2.0 3.5 4.7 2.0 6.5 2.0 5.7
ns
t
PZL
4.0 6.9 9.0 4.0 10.5 4.0 10.0
t
PHZ
Output Disable Time (74F240) 2.0 4.0 5.3 2.0 6.5 2.0 6.3
t
PLZ
2.0 6.0 8.0 2.0 12.5 2.0 9.5
t
PLH
Propagation Delay 2.5 4.0 5.2 2.0 6.5 2.5 6.2
ns
t
PHL
Data to Output (74F241, 74F244) 2.5 4.0 5.2 2.0 7.0 2.5 6.5
t
PZH
Output Enable Time 2.0 4.3 5.7 2.0 7.0 2.0 6.7
ns
t
PZL
(74F241, 74F244) 2.0 5.4 7.0 2.0 8.5 2.0 8.0
t
PHZ
Output Disable Time 2.0 4.5 6.0 2.0 7.0 2.0 7.0
t
PLZ
(74F241, 74F244) 2.0 4.5 6.0 2.0 7.5 2.0 7.0
