AC Electrical Characteristics
74F
54F
74F
e a
T
25 C
§
5.0V
A
e
50 pF
e
T
, V
CC
e
Mil
T
, V
Com
e
50 pF
A
A CC
e a
Symbol
Parameter
V
Units
CC
C
C
L
L
e
C
Min
90
50 pF
L
Max
Min
Max
Min
Max
f
Max. Clock Frequency
75
90
MHz
ns
max
t
t
Propagation Delay
Clock to Bus
2.0
2.0
7.0
8.0
2.0
2.0
8.5
9.5
2.0
2.0
8.0
9.0
PLH
PHL
t
t
Propagation Delay
Bus to Bus (’F651)
2.0
1.0
8.5
7.5
1.0
1.0
9.0
8.0
2.0
1.0
9.0
8.0
PLH
ns
ns
ns
PHL
t
t
Propagation Delay
Bus to Bus (’F652)
1.0
1.0
7.0
6.5
1.0
1.0
8.0
8.0
1.0
1.0
7.5
7.0
PLH
PHL
t
t
Propagation Delay
2.0
2.0
8.5
8.0
2.0
2.0
11.0
10.0
2.0
2.0
9.5
9.0
PLH
SBA or SAB to A or B
PHL
AC Operating Requirements
74F
54F
74F
e a
T
A
25 C
§
5.0V
e
e
Symbol
Parameter
T
, V
CC
Mil
T
, V
A CC
Com
Max
Units
A
e a
V
CC
Min
Max
Min
Max
Min
t
t
Enable Time
2.0
2.0
9.5
2.0
2.0
10.0
10.0
2.0
2.0
10.0
12.5
PZH
*OEBA to A
12.0
PZL
t
t
Disable Time
1.0
2.0
7.5
8.5
1.0
1.0
9.0
9.0
1.0
2.0
8.0
9.0
PHZ
ns
*OEBA to A
PLZ
t
t
Enable Time
OEAB to B
2.0
3.0
9.5
2.0
2.0
10.0
12.0
2.0
3.0
10.0
14.0
PZH
13.0
PZL
t
t
Disable Time
OEAB to B
2.0
2.0
9.0
1.0
1.0
9.0
2.0
2.0
10.0
11.0
PHZ
ns
ns
ns
ns
10.5
12.0
PLZ
t (H)
s
Setup Time, HIGH or
LOW, Bus to Clock
5.0
5.0
5.0
5.0
5.0
5.0
t (L)
s
t (H)
h
Hold Time, HIGH or
LOW, Bus to Clock
2.0
2.0
2.5
2.5
2.0
2.0
t (L)
h
t
t
(H)
(L)
Clock Pulse Width
HIGH or LOW
5.0
5.0
5.0
5.0
5.0
5.0
w
w
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 651/652
S
C
X
Temperature Range Family
Special Variations
e
e
e
74F
54F
Commercial
Military
QB
Military grade device with
environmental and burn-in
processing
Device Type
e
X
Devices shipped in 13 reel
×
Package Code
Temperature Range
e
e
e
SP
SD
S
Slim Plastic DIP
Slim Ceramic DIP
Small Outline (SOIC)
e
e
a
C
M
Commercial (0 C to 70 C)
§
§
b a
Military ( 55 C to 125 C)
§
§
6