AC Electrical Characteristics
74F
Symbol
Parameter
Min
t
PLH
t
PHL
Propagation Delay
A
n
B
n
to O
n
30
30
T
A
e a
25 C
V
CC
e a
5 0V
C
L
e
50 pF
Typ
42
40
Max
56
53
54F
T
A
V
CC
e
Mil
C
L
e
50 pF
Min
30
25
Max
75
75
74F
T
A
V
CC
e
Com
C
L
e
50 pF
Min
30
30
Max
66
63
ns
Units
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
74F
Temperature Range Family
74F
e
Commercial
54F
e
Military
Device Type
Package Code
P
e
Plastic DIP
D
e
Ceramic DIP
F
e
Flatpak
L
e
Leadless Chip Carrier (LCC)
S
e
Small Outline SOIC JEDEC
SJ
e
Small Outline SOIC EIAJ
32
S
C
X
Special Variations
QB
e
Military grade device with
environmental and burn-in
processing
X
e
Devices shipped in 13 reels
Temperature Range
C
e
Commercial (0 C to
a
70 C)
M
e
Military (
b
55 C to
a
125 C)
Physical Dimensions
inches (millimeters)
20-Lead Ceramic Leadless Chip Carrier (L)
NS Package Number E20A
3
NSC [ NATIONAL SEMICONDUCTOR ]
