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74LS168 데이터시트(PDF) 3 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
부품명 74LS168
상세설명  54LS168 Synchronous Bi-Directional BCD Decade Counter
PDF  6 Pages
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제조업체  NSC [National Semiconductor (TI)]
홈페이지  http://www.national.com
Logo NSC - National Semiconductor (TI)

74LS168 데이터시트(HTML) 3 Page - National Semiconductor (TI)

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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 Voltage
VCC e Min IOH e Max
25
V
VIL e Max VIH e Min
VOL
Low Level Output Voltage
VCC e Min IOL e Max
04
V
VIH e Min VIL e Max
II
Input Current
Max
VCC e Max VI e 100V
01
mA
Input Voltage
IIH
High Level Input Current
VCC e Max VI e 27V
Inputs
20
m
A
CET
40
IIL
Low Level Input Current
VCC e Max VI e 05V
Data
b
05
b
400
CP PE UD CEP
b
30
b
400
m
A
CET
b
60
b
800
IOS
Short Circuit Output Current
VCC e Max (Note 2)
b
20
b
100
mA
ICC
Supply Current
VCC e Max (Note 3)
34
mA
Note 1
All typicals are at VCC e 5V TA e 25 C
Note 2
Not more than one output should be shorted at a time and the duration should not exceed one second
Note 3
ICC is measured with all outputs open and all inputs grounded
Switching Characteristics
VCC ea50V TA ea25 C (See Section 1 for test waveforms and output load)
54LS168
Symbol
Parameter
CL e 15 pF
Units
Min
Max
fMax
Maximum Clock Frequency
25
MHz
tPLH
Propagation Delay
20
ns
tPHL
CP to Qn
20
tPLH
Propagation Delay
30
ns
tPHL
CP to TC
30
tPLH
Propagation Delay
15
ns
tPHL
CET to TC
20
tPLH
Propagation Delay
25
ns
tPHL
UD to TC
25
3



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