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SN74AS257D データシート(PDF) 2 Page - Texas Instruments

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部品番号 SN74AS257D
部品情報  QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS
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メーカー  TI [Texas Instruments]
ホームページ  http://www.ti.com
Logo TI - Texas Instruments

SN74AS257D データシート(HTML) 2 Page - Texas Instruments

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SN54ALS257A, SN54ALS258A, SN74ALS257A, SN74ALS258A, SN74AS257, SN74AS258
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS
WITH 3-STATE OUTPUTS
SDAS124C – APRIL 1982 – REVISED AUGUST 1996
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
logic symbols
OE
MUX
2
1A
1
3
1B
EN
15
G1
1
1Y
4
5
2A
6
2B
2Y
7
11
3A
10
3B
3Y
9
14
4A
13
4B
4Y
12
A /B
1
OE
MUX
2
1A
1
3
1B
EN
15
G1
1
1Y
4
5
2A
6
2B
2Y
7
11
3A
10
3B
3Y
9
14
4A
13
4B
4Y
12
A /B
1
SN54ALS257A, SN74ALS257A,
SN74AS257
SN54ALS258A, SN74ALS258A,
SN74AS258
† These symbols are in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
Pin numbers shown are for the D, J, and N packages.
logic diagrams (positive logic)
4Y
3Y
2Y
1Y
A/B
OE
4B
4A
3B
3A
2B
2A
1B
1A
4
2
3
7
5
6
9
11
10
12
14
13
1
15
4Y
3Y
2Y
1Y
A /B
OE
4B
4A
3B
3A
2B
2A
1B
1A
4
2
3
7
5
6
9
11
10
12
14
13
1
15
SN54ALS257A, SN74ALS257A,
SN74AS257
SN54ALS258A, SN74ALS258A,
SN74AS258
Pin numbers shown are for the D, J, and N packages.


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