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DM74LS90 Datasheet(PDF) 3 Page - Fairchild Semiconductor

Part No. DM74LS90
Description  Decade and Binary Counters
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Maker  FAIRCHILD [Fairchild Semiconductor]
Homepage  http://www.fairchildsemi.com
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www.fairchildsemi.com
Absolute Maximum Ratings(Note 4)
Note 4: The “Absolute Maximum Ratings” are 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” table are not guaranteed at the absolute maximum ratings.
The “Recommended Operating Conditions” table will define the conditions
for actual device operation.
Recommended Operating Conditions
Note 5: CL = 15 pF, RL = 2 kΩ, TA = 25°C and VCC = 5V.
Note 6: CL = 50 pF, RL = 2 kΩ, TA = 25°C and VCC = 5V.
Electrical Characteristics
over recommended operating free air temperature range (unless otherwise noted)
Note 7: All typicals are at VCC = 5V, TA = 25°C.
Supply Voltage
7V
Input Voltage (Reset)
7V
Input Voltage (A or B)
5.5V
Operating Free Air Temperature Range
0
°C to +70°C
Storage Temperature Range
−65°C to +150°C
Symbol
Parameter
Min
Nom
Max
Units
VCC
Supply Voltage
4.75
5
5.25
V
VIH
HIGH Level Input Voltage
2
V
VIL
LOW Level Input Voltage
0.8
V
IOH
HIGH Level Output Current
−0.4
mA
IOL
LOW Level Output Current
8
mA
fCLK
Clock Frequency (Note 5)
A to QA
032
MHz
B to QB
016
fCLK
Clock Frequency (Note 6)
A to QA
020
MHz
B to QB
010
tW
Pulse Width (Note 5)
A
15
B30
ns
Reset
15
tW
Pulse Width (Note 6)
A
25
B50
ns
Reset
25
tREL
Reset Release Time (Note 5)
25
ns
tREL
Reset Release Time (Note 6)
35
ns
TA
Free Air Operating Temperature
0
70
°C
Symbol
Parameter
Conditions
Min
Typ
Max
Units
(Note 7)
VI
Input Clamp Voltage
VCC = Min, II = −18 mA
−1.5
V
VOH
HIGH Level
VCC = Min, IOH = Max
2.7
3.4
V
Output Voltage
VIL = Max, VIH = Min
VOL
LOW Level
VCC = Min, IOL = Max
(Note 8)
V
Output Voltage
VIL = Max, VIH = Min
0.35
0.5
IOL = 4 mA, VCC = Min
0.25
0.4
II
Input Current @ Max
VCC = Max, VI = 7V
Reset
0.1
mA
Input Voltage
VCC = Max
A
0.2
VI = 5.5V
B
0.4
IIH
HIGH Level
VCC = Max, VI = 2.7V
Reset
20
µA
Input Current
A
40
B80
IIL
LOW Level
VCC = Max, VI = 0.4V
Reset
−0.4
mA
Input Current
A
−2.4
B
−3.2
IOS
Short Circuit Output Current
VCC = Max (Note 9)
−20
−100
mA
ICC
Supply Current
VCC = Max (Note 7)
9
15
mA




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