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SN74ALS646ADWR 数据表(PDF) 2 Page - Texas Instruments

部件名 SN74ALS646ADWR
功能描述  OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS
PDF  25 Pages
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制造商  TI2 [Texas Instruments]
网页  https://www.ti.com
标志 TI2 - Texas Instruments

SN74ALS646ADWR 数据表(HTML) 2 Page - Texas Instruments

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SN54ALS646, SN54ALS648, SN54AS646
SN74ALS646A, SN74ALS648A, SN74AS646, SN74AS648
OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS
SDAS039F – DECEMBER 1983 – REVISED JANUARY 1995
2
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
21
L
3
DIR
L
1
CLKAB
X
23
CLKBA
X
2
SAB
X
22
SBA
L
REAL-TIME TRANSFER
BUS B TO BUS A
21
L
3
DIR
H
1
CLKAB
X
23
CLKBA
X
2
SAB
L
22
SBA
X
REAL-TIME TRANSFER
BUS A TO BUS B
21
X
3
DIR
X
1
CLKAB
23
CLKBA
X
2
SAB
X
22
SBA
X
STORAGE FROM
A, B, OR A AND B
21
L
3
DIR
L
1
CLKAB
X
23
CLKBA
H or L
2
SAB
X
22
SBA
H
TRANSFER STORED DATA
TO A AND/OR B
X
H
X
X
XX
X
X
X
L
H
H or L
X
H
X
↑
↑
↑
↑
OE
OE
OE
OE
Figure 1. Bus-Management Functions
Pin numbers shown are for the DW, JT, and NT packages.



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