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DM74LS90 Datasheet(PDF) 4 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part No. DM74LS90
Description  Decade and Binary Counters
Download  10 Pages
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Maker  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
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 4 page
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Recommended Operating Conditions
Symbol
Parameter
DM74LS93
Units
Min
Nom
Max
VCC
Supply Voltage
475
5
525
V
VIH
High Level Input Voltage
2
V
VIL
Low Level Input Voltage
08
V
IOH
High Level Output Current
b
04
mA
IOL
Low Level Output Current
8
mA
fCLK
Clock Frequency (Note 1)
A to QA
032
BtoQB
016
MHz
fCLK
Clock Frequency (Note 2)
A to QA
020
BtoQB
010
tW
Pulse Width (Note 1)
A
15
B30
ns
Reset
15
tW
Pulse Width (Note 2)
A
25
B50
ns
Reset
25
tREL
Reset Release Time (Note 1)
25
ns
tREL
Reset Release Time (Note 2)
35
ns
TA
Free Air Operating Temperature
0
70
C
Note 1
CL e 15 pF RL e 2kX TA e 25 C and VCC e 5V
Note 2
CL e 50 pF RL e 2kX TA e 25 C and VCC e 5V
’LS93 Electrical Characteristics
over recommended operating free air temperature range (unless otherwise noted)
Symbol
Parameter
Conditions
Min
Typ
Max
Units
(Note 1)
VI
Input Clamp Voltage
VCC e Min II eb18 mA
b
15
V
VOH
High Level Output
VCC e Min IOH e Max
27
34
V
Voltage
VIL e Max VIH e Min
VOL
Low Level Output
VCC e Min IOL e Max
Voltage
VIL e Max VIH e Min
035
05
V
(Note 4)
IOL e 4 mA VCC e Min
025
04
II
Input Current
Max
VCC e Max VI e 7V
Reset
01
Input Voltage
VCC e Max
A
02
mA
VI e 55V
B
04
IIH
High Level Input
VCC e Max
Reset
20
Current
VI e 27V
A40
m
A
B80
4




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