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SN74148N Fiches technique(PDF) 10 Page - Texas Instruments

No de pièce SN74148N
Description  10-LINE TO 4-LINE AND 8-LINE TO 3-LINE PRIORITY ENCODERS
Download  22 Pages
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Fabricant  TI [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI - Texas Instruments

SN74148N Fiches technique(HTML) 10 Page - Texas Instruments

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SN54147, SN54148, SN54LS147, SN54LS148
SN74147, SN74148 (TIM9907), SN74LS147, SN74LS148
10LINE TO 4LINE AND 8LINE TO 3LINE PRIORITY ENCODERS
SDLS053B − OCTOBER 1976 − REVISED MAY 2004
10
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
SN54LS147, SN74LS147 switching characteristics, VCC = 5 V, TA = 255C (see Figure 2)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
WAVEFORM
TEST
CONDITIONS
MIN
TYP
MAX
UNIT
tPLH
Any
Any
In-phase output
12
18
ns
tPHL
Any
Any
In-phase output
CL = 15 pF,
12
18
ns
tPLH
Any
Any
Out-of-phase output
CL = 15 pF,
RL = 2 kΩ
21
33
ns
tPHL
Any
Any
Out-of-phase output
RL = 2 k
15
23
ns
SN54LS148, SN74LS148 switching characteristics, VCC = 5 V, TA = 255C (see Figure 2)
PARAMETER†
FROM
(INPUT)
TO
(OUTPUT)
WAVEFORM
TEST
CONDITIONS
MIN
TYP
MAX
UNIT
tPLH
1–7
A0, A1, or A2
In-phase output
14
18
ns
tPHL
1–7
A0, A1, or A2
In-phase output
15
25
ns
tPLH
1–7
A0, A1, or A2
Out-of-phase output
20
36
ns
tPHL
1–7
A0, A1, or A2
Out-of-phase output
16
29
ns
tPLH
0–7
EO
Out-of-phase output
7
18
ns
tPHL
0–7
EO
Out-of-phase output
25
40
ns
tPLH
0–7
GS
In-phase output
CL = 15 pF,
35
55
ns
tPHL
0–7
GS
In-phase output
CL = 15 pF,
RL = 2 kΩ
9
21
ns
tPLH
EI
A0, A1, or A2
In-phase output
RL = 2 k
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
23
35
ns
† tPLH = propagation delay time, low-to-high-level output
tPHL = propagation delay time, high-to-low-level output


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