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DM74LS123SJ View Datasheet(PDF) - Fairchild Semiconductor

Part Name
Description
Manufacturer
DM74LS123SJ Datasheet PDF : 8 Pages
1 2 3 4 5 6 7 8
Absolute Maximum Ratings(Note 1)
Supply Voltage
7V
Input Voltage
7V
Operating Free Air Temperature Range 0°C to +70°C
Storage Temperature
65°C to +150°C
Note 1: The Absolute Maximum Ratingsare those values beyond which
the safety of the device cannot be guaranteed. The device should not be
operated at these limits. The parametric values defined in the Electrical
Characteristics tables are not guaranteed at the absolute maximum ratings.
The Recommended Operating Conditionstable will define the conditions
for actual device operation.
Recommended Operating Conditions
Symbol
Parameter
VCC
Supply Voltage
VIH
HIGH Level Input Voltage
VIL
LOW Level Input Voltage
IOH
HIGH Level Output Current
IOL
LOW Level Output Current
tW
Pulse Width
A or B HIGH
(Note 2)
A or B LOW
Clear LOW
REXT
External Timing Resistor
CEXT
External Timing Capacitance
CWIRE
Wiring Capacitance at REXT/CEXT Terminal
TA
Free Air Operating Temperature
Note 2: TA = 25°C and VCC = 5V.
Min
4.75
2
40
40
40
5
0
Nom
5
No Restriction
Max
5.25
0.8
0.4
8
260
50
70
Units
V
V
V
mA
mA
ns
k
µF
pF
°C
Electrical Characteristics
over recommended operating free air temperature range (unless otherwise noted)
Symbol
Parameter
Conditions
Typ
Min
Max
(Note 3)
Units
VI
Input Clamp Voltage
VCC = Min, II = −18 mA
1.5
V
VOH
HIGH Level
Output Voltage
VCC = Min, IOH = Max
2.7
3.4
V
VIL = Max, VIH = Min
VOL
LOW Level
Output Voltage
VCC = Min, IOL = Max
VIL = Max, VIH = Min
0.35
0.5
V
IOL = 4 mA, VCC = Min
0.25
0.4
II
Input Current @ Max Input Voltage
VCC = Max, VI = 7V
0.1
mA
IIH
HIGH Level Input Current
VCC = Max, VI = 2.7V
20
µA
IIL
LOW Level Input Current
VCC = Max, VI = 0.4V
0.4
mA
IOS
Short Circuit Output Current
VCC = Max (Note 4)
20
100
mA
ICC
Supply Current
VCC = Max (Note 5)(Note 6)(Note 7)
12
20
mA
Note 3: All typicals are at VCC = 5V, TA = 25°C.
Note 4: Not more than one output should be shorted at a time, and the duration should not exceed one second.
Note 5: Quiescent ICC is measured (after clearing) with 2.4V applied to all clear and A inputs, B inputs grounded, all outputs OPEN, CEXT = 0.02 µF,
and REXT = 25 k.
Note 6: ICC is measured in the triggered state with 2.4V applied to all clear and B inputs, A inputs grounded, all outputs OPEN, CEXT = 0.02 µF,
and REXT = 25 k.
Note 7: With all outputs OPEN and 4.5V applied to all data and clear inputs, ICC is measured after a momentary ground, then 4.5V is applied to the clock.
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