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74LS174 数据表(PDF) 3 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
部件名 74LS174
功能描述  Hex/Quad D Flip-Flops with Clear
PDF  8 Pages
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制造商  NSC [National Semiconductor (TI)]
网页  http://www.national.com
标志 NSC - National Semiconductor (TI)

74LS174 数据表(HTML) 3 Page - National Semiconductor (TI)

  74LS174 Datasheet HTML 1Page - National Semiconductor (TI) 74LS174 Datasheet HTML 2Page - National Semiconductor (TI) 74LS174 Datasheet HTML 3Page - National Semiconductor (TI) 74LS174 Datasheet HTML 4Page - National Semiconductor (TI) 74LS174 Datasheet HTML 5Page - National Semiconductor (TI) 74LS174 Datasheet HTML 6Page - National Semiconductor (TI) 74LS174 Datasheet HTML 7Page - National Semiconductor (TI) 74LS174 Datasheet HTML 8Page - National Semiconductor (TI)  
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’LS174 Switching Characteristics
at VCC e 5V and TA e 25 C (See Section 1 for Test Waveforms and Output Load)
From (Input)
RL e 2kX
Symbol
Parameter
To (Output)
CL e 15 pF
CL e 50 pF
Units
Min
Max
Min
Max
fMAX
Maximum Clock Frequency
30
25
MHz
tPLH
Propagation Delay Time
Clock to
30
32
ns
Low to High Level Output
Output
tPHL
Propagation Delay Time
Clock to
30
36
ns
High to Low Level Output
Output
tPHL
Propagation Delay Time
Clear to
35
42
ns
High to Low Level Output
Output
Recommended Operating Conditions
Symbol
Parameter
DM54LS175
DM74LS175
Units
Min
Nom
Max
Min
Nom
Max
VCC
Supply Voltage
45
5
55
475
5
525
V
VIH
High Level Input Voltage
2
2
V
VIL
Low Level Input Voltage
07
08
V
IOH
High Level Output Current
b
04
b
04
mA
IOL
Low Level Output Current
4
8
mA
fCLK
Clock Frequency (Note 1)
0
30
0
30
MHz
fCLK
Clock Frequency (Note 2)
0
25
0
25
MHz
tW
Pulse Width
Clock
20
20
ns
(Note 3)
Clear
20
20
tSU
Data Setup Time (Note 3)
20
20
ns
tH
Data Hold Time (Note 3)
0
0
ns
tREL
Clear Release Time (Note 3)
25
25
ns
TA
Free Air Operating Temperature
b
55
125
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
Note 3
TA e 25 C and VCC e 5V
3



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