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74LS148 数据表(PDF) 5 Page - Motorola, Inc

部件名 74LS148
功能描述  10-LINE-TO-4-LINE AND 8-LINE-TO-3-LINE PRIORITY ENCODERS
PDF  7 Pages
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制造商  MOTOROLA [Motorola, Inc]
网页  http://www.freescale.com
标志 MOTOROLA - Motorola, Inc

74LS148 数据表(HTML) 5 Page - Motorola, Inc

  74LS148 Datasheet HTML 1Page - Motorola, Inc 74LS148 Datasheet HTML 2Page - Motorola, Inc 74LS148 Datasheet HTML 3Page - Motorola, Inc 74LS148 Datasheet HTML 4Page - Motorola, Inc 74LS148 Datasheet HTML 5Page - Motorola, Inc 74LS148 Datasheet HTML 6Page - Motorola, Inc 74LS148 Datasheet HTML 7Page - Motorola, Inc  
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FAST AND LS TTL DATA
SN54/74LS147
• SN54/74LS148 • SN54/74LS748
AC CHARACTERISTICS (VCC = 5.0 V, TA = 25°C)
SN54 / 74LS147
Symbol
From
(Input)
To
(Output)
Waveform
Limits
Unit
Test Conditions
Symbol
From
(Input)
To
(Output)
Waveform
Min
Typ
Max
Unit
Test Conditions
tPLH
Any
Any
In-phase
output
12
18
ns
CL = 15 pF,
RL = 2.0 kΩ
tPHL
Any
Any
In-phase
output
12
18
ns
CL = 15 pF,
RL = 2.0 kΩ
tPLH
Any
Any
Out-of-phase
output
21
33
ns
CL = 15 pF,
RL = 2.0 kΩ
tPHL
Any
Any
Out-of-phase
output
15
23
ns
SN54 / 74LS148
SN54 / 74LS748
Symbol
From
(Input)
To
(Output)
Waveform
Limits
Unit
Test Conditions
Symbol
From
(Input)
To
(Output)
Waveform
Min
Typ
Max
Unit
Test Conditions
tPLH
1 thru 7
A0, A1, or A2
In-phase
output
14
18
ns
CL = 15 pF,
RL = 2.0 kΩ
tPHL
1 thru 7
A0, A1, or A2
In-phase
output
15
25
ns
CL = 15 pF,
RL = 2.0 kΩ
tPLH
1 thru 7
A0, A1, or A2
Out-of-phase
output
20
36
ns
CL = 15 pF,
RL = 2.0 kΩ
tPHL
1 thru 7
A0, A1, or A2
Out-of-phase
output
16
29
ns
CL = 15 pF,
RL = 2.0 kΩ
tPLH
0 thru 7
EO
Out-of-phase
output
7.0
18
ns
CL = 15 pF,
RL = 2.0 kΩ
tPHL
0 thru 7
EO
Out-of-phase
output
25
40
ns
CL = 15 pF,
RL = 2.0 kΩ
tPLH
0 thru 7
GS
In-phase
output
35
55
ns
CL = 15 pF,
RL = 2.0 kΩ
tPHL
0 thru 7
GS
In-phase
output
9.0
21
ns
RL = 2.0 kΩ
tPLH
EI
A0, A1, or A2
In-phase
output
16
25
ns
tPHL
EI
A0, A1, or A2
In-phase
output
12
25
ns
tPLH
EI
GS
In-phase
output
12
17
ns
tPHL
EI
GS
In-phase
output
14
36
ns
tPLH
EI
EO
In-phase
output
12
21
ns
tPHL
EI
EO
In-phase
output
28
30
40
45
ns
(LS148)
(LS748)



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