74F191DCQB NSC [National Semiconductor], 74F191DCQB Datasheet - Page 6

• Manufacturer Part Number: 74F191DCQB
• Description: Up/Down Binary Counter with Preset and Ripple Clock
• Manufacturer: NSC [National Semiconductor]

Symbol
t
t
t
t
t
t
t
t
t
t
t
t
t
AC Operating Requirements
Ordering Information
The device number is used to form part of a simplified purchasing code where the package type and temperature range are
defined as follows
s
s
h
h
s
h
s
s
h
h
w
w
rec
(H)
(L)
(L)
(H)
(L)
(H)
(L)
(L)
(H)
(L)
(L)
(L)
Temperature Range Family
Device Type
Package Code
74F
54F
SJ
D
P
F
S
L
e
e
e
e
e
e
Setup Time HIGH or LOW
P
Hold Time HIGH or LOW
P
Setup Time LOW
CE to CP
Hold Time LOW
CE to CP
Setup Time HIGH or LOW
U D to CP
Hold Time HIGH or LOW
U D to CP
PL Pulse Width LOW
CP Pulse Width LOW
Recovery Time
PL to CP
e
e
n
n
Plastic DIP
Ceramic DIP
Flatpak
Leadless Ceramic Chip Carrier (LCC)
Small Outline SOIC JEDEC
Small Outline SOIC EIAJ
to PL
to PL
Commercial
Military
Parameter
10 0
12 0
12 0
Min
4 5
4 5
2 0
2 0
6 0
5 0
6 0
V
T
0
0
0
CC
A
e a
74F
e a
74F
25 C
5 0V
Max
191
6
S
C
10 5
12 0
12 0
Min
6 0
6 0
2 0
2 0
8 5
7 0
7 5
T
0
0
0
X
A
V
54F
CC
Special Variations
Temperature Range
QB
e
X
e
e
Mil
M
C
Max
Devices shipped in 13 reels
Military grade with environmental
and burn-in processing shipped
in tubes
e
e
Commercial (0 C to
Military (
T
10 0
12 0
12 0
b
Min
5 0
5 0
2 0
2 0
6 0
5 0
6 0
A
0
0
0
55 C to
V
CC
74F
e
a
a
Com
Max
125 C)
70 C)
Units
ns
ns
ns
ns
ns
ns