www.fairchildsemi.com 4
74F540 • 74F541
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 1.5 3.0 5.0 1.0 6.0 1.0 5.5
ns
t
PHL
Data to Output (74F540) 1.0 2.0 4.0 1.0 4.5 1.0 4.0
t
PZH
Output Enable Time (74F540) 2.5 4.9 8.0 2.5 9.0 2.5 8.5
ns
t
PZL
3.5 5.8 10.0 3.5 11.0 3.5 10.5
t
PHZ
Output Disable Time (74F540) 1.5 3.4 6.0 1.5 7.0 1.5 6.5
t
PLZ
1.0 2.5 5.5 1.0 7.5 1.0 6.0
t
PLH
Propagation Delay 1.5 3.3 5.5 1.5 6.0
ns
t
PHL
Data to Output (74F541) 1.5 2.7 5.5 1.5 6.0
t
PZH
Output Enable Time (74F541) 3.0 5.8 8.0 2.5 9.5
ns
t
PZL
3.5 6.1 8.5 3.0 9.5
t
PHZ
Output Disable Time (74F541) 1.5 3.4 6.0 1.5 6.5
t
PLZ
1.5 2.9 5.5 1.5 6.0
