Absolute Maximum Ratings
Above which the useful life may be impaired
Recommended Operating
Conditions
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
Min
Typ
Max
Ambient Temperature (T )
A
a
Commercial
Military
0 C
§
55 C
75 C
§
b
a
65 C to 150 C
§
Storage Temperature
§
b
a
125 C
§
§
a
Maximum Junction Temperature (T )
J
150 C
§
7.0V to GND
Supply Voltage (V
Commercial
Military
)
EE
b
Supply Voltage Range
Input Voltage (DC)
b
b
b
b
b
b
5.7V
5.7V
5.2V
5.2V
4.7V
4.7V
V
to GND
EE
b
Output Current (DC Output HIGH)
Operating Range
50 mA
b
b
5.7V to 4.7V
Lead Temperature
(Soldering, 10 sec.)
300 C
§
TTL Input/Output Operation
DC Electrical Characteristics
Over Operating Temperature and Voltage Range unless otherwise noted, Pins 12 and 13
e
GND
Typ
(Note 3)
Symbol
Parameter
Min
Max
Units
V
Conditions
Guaranteed Input HIGH Threshold
V
V
V
V
Input HIGH Voltage
M
IH
4.1
e
e
and M Inputs
2
Voltage (Note 4), V
CC
V
CCA
5.0V
1
Input LOW Voltage
and M Inputs
Guaranteed Input LOW Threshold
IL
3.3
3.3
0.2
V
e
V
CCA
e
M
Voltage (Note 4), V
CC
5.0V
1
2
e
e
Min,
640 mA
Output HIGH Voltage
QTTL Output
V
I
V
CCA
e b
OH
OL
CC
OH
2.3
V
e
e
Output LOW Voltage
QTTL Output
V
V
Min,
CC
e
CCA
20.0 mA
0.5
V
I
OL
e
e
Max,
0.4V, Pins 6, 7
I
I
Input LOW Current
and M Inputs
V
V
V
CCA
IL
CC
IN
b
b
5.0
2.3
mA
mA
e
e
V
M
1
2
CC
e
e
V Max,
CCA
0.0V, Pin 14
Output Short Circuit
Current
V
V
SC
CC
b
b
b
80
20
35
e
e
V
OUT
CC
AC Electrical Characteristics
e
e
e
e a
GND, T
A
V
CC
V
CCA
5.0V Nominal, V
25 C
§
Min
EE
Symbol
Parameter
Typ
Max
Units
Conditions
SeeFigure 1
t
t
Propagation Delay, (50% to 50%)
CP to QTTL
PLH
PHL
6
10
14
ns
t
Propagation Delay, (50% to 50%)
MS to QTTL
PLH
12
2
17
ns
t
t
t
Mode Control Setup Time
Mode Control Hold Time
4
0
ns
ns
s
b
2
h
Output Rise Time
(20% to 80%)
TLH
10
2
ns
ns
t
f
Output Fall Time
(80% to 20%)
THL
b a
55 C to 125 C
Count Frequency
550
600
650
650
§
§
MAX
MHz
a
0 C to 75 C
§
§
Clock Input AC Coupled
350 mV Peak-to-Peak
Sinewave (Note 5)
2
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