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參數(shù)資料
| 型號： | SN54ALS139FK |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | DUAL 2-LINE TO 4-LINE DECODERS/DEMULTIPLEXERS |
| 中文描述： | 雙程線，4線解碼器/解復(fù)用器 |
| 文件頁數(shù)： | 2/13頁 |
| 文件大?。?/td> | 486K |
| 代理商： | SN54ALS139FK |
SN54ALS139, SN74ALS139
DUAL 2-LINE TO 4-LINE DECODERS/DEMULTIPLEXERS
SDAS204A – APRIL 1982 – REVISED DECEMBER 1994
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
logic symbols (alternatives)
X/Y
1
2
1A
3
1B
13
2B
EN
1
15
14
2A
1Y0
4
0
1Y1
5
1
1Y2
6
2
1Y3
7
3
2Y0
12
2Y1
11
2Y2
10
2Y3
9
G3
0
1G
2G
DMUX
0
2
1A
1
3
1B
13
2B
1
15
14
2A
1Y0
4
0
1Y1
5
1
1Y2
6
2
1Y3
7
3
2Y0
12
2Y1
11
2Y2
10
2Y3
9
1G
2G
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 diagram (positive logic)
Select
Inputs
Select
Inputs
2B
2A
Enable 2G
1B
1A
Enable 1G
Data
Outputs
2Y3
2Y2
2Y1
2Y0
1Y3
1Y2
1Y1
1Y0
1
2
3
15
14
13
4
5
6
7
12
11
10
9
Pin numbers shown are for the D, J, and N packages.
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