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参数资料
| 型号： | SN54AS138FKR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 编、解码器及复用、解复用 |
| 英文描述： | AS SERIES, OTHER DECODER/DRIVER, INVERTED OUTPUT, CQCC20 |
| 封装： | CERAMIC, LCC-20 |
| 文件页数： | 2/5页 |
| 文件大小： | 83K |
| 代理商： | SN54AS138FKR |
SN54ALS138, SN54AS138, SN74ALS138A, SN74AS138
3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS
SDAS055C – APRIL 1982 – REVISED FEBRUARY 1994
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
logic diagram (positive logic)
Data
Outputs
Enable
Inputs
Select
Inputs
6
OE1
OE2B
OE2A
5
4
3
C
2
B
A
1
7
Y7
9
Y6
10
Y5
11
Y4
12
Y3
13
Y2
14
Y1
Y0
15
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.
FUNCTION TABLE
ENABLE
INPUTS
SELECT
INPUTS
OUTPUTS
OE1
OE2A
OE2B
C
B
A
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
X
H
X
H
X
XH
X
XX
H
HHHHHHH
L
XX
X
XX
H
HHHHHHH
H
LL
L
LL
L
HHHHHHH
H
LL
L
LH
H
L
HHHHHH
H
LL
L
HL
H
L
HHHHH
H
LL
L
HH
H
HH
L
HHHH
H
LL
H
LL
H
HHH
L
HHH
H
LL
H
LH
H
HHHH
L
H
LL
H
HL
H
HHHHH
L
H
L
H
L
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