74F191 Up/Down Binary Counter with Preset and Ripple Clock
©1988 Fairchild Semiconductor Corporation www.fairchildsemi.com
74F191 Rev. 1.0.2 7
AC Electrical Characteristics
Symbol Parameter
T
A
=
+25°C,
V
CC
=
+5.0V,
C
L
=
50pF
T
A
=
–55°C to +125°C,
V
CC
=
+5.0V,
C
L
=
50pF
T
A
=
0°C to 70°C,
V
CC
=
+5.0V,
C
L
=
50pF
UnitsMin. Typ. Max. Min. Max. Min. Max.
f
MAX
Maximum Count Frequency 100 MHz
t
PLH
Propagation Delay,
CP to Q
n
3.0 5.5 7.5 3.0 9.5 3.0 8.5 ns
t
PHL
5.0 8.5 11.0 5.0 13.5 5.0 12.0
t
PLH
Propagation Delay,
CP to TC
6.0 10.0 13.0 6.0 16.5 6.0 14.0 ns
t
PHL
5.0 8.5 11.0 5.0 13.5 5.0 12.0
t
PLH
Propagation Delay,
CP to RC
3.0 5.5 7.5 3.0 9.5 3.0 8.5 ns
t
PHL
3.0 5.0 7.0 3.0 9.0 3.0 8.0
t
PLH
Propagation Delay,
CE
to RC
3.0 5.0 7.0 3.0 9.0 3.0 8.0 ns
t
PHL
3.0 5.5 7.0 3.0 9.0 3.0 8.0
t
PLH
Propagation Delay,
U
/D to RC
7.0 11.0 18.0 7.0 22.0 7.0 20.0 ns
t
PHL
5.5 9.0 12.0 5.5 14.0 5.5 13.0
t
PLH
Propagation Delay,
U
/D to TC
4.0 7.0 10.0 4.0 13.5 4.0 11.0 ns
t
PHL
4.0 6.5 10.0 4.0 12.5 4.0 11.0
t
PLH
Propagation Delay,
P
n
to Q
n
3.0 4.5 7.0 3.0 9.0 3.0 8.0 ns
t
PHL
6.0 10.0 13.0 6.0 16.0 6.0 14.0
t
PLH
Propagation Delay,
PL
to Q
n
5.0 8.5 11.0 5.0 13.0 5.0 12.0 ns
t
PHL
5.5 9.0 12.0 5.5 14.5 5.5 13.0
t
PLH
Propagation Delay,
P
n
to TC
5.0 14.0 5.0 15.0 ns
t
PHL
6.5 13.0 6.0 14.0
t
PLH
Propagation Delay,
P
n
to RC
6.5 19.0 6.5 20.0 ns
t
PHL
6.0 14.0 6.0 15.0
t
PLH
Propagation Delay,
PL
to TC
8.0 16.5 8.0 17.5 ns
t
PHL
6.0 13.5 6.0 14.5
t
PLH
Propagation Delay,
PL
to RC
10.0 20.0 10.0 21.0 ns
t
PHL
9.0 15.5 9.0 16.0
