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參數(shù)資料
| 型號： | SN54HCT646WR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 總線收發(fā)器 |
| 英文描述： | HCT SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, CDFP24 |
| 封裝： | CERAMIC, FP-24 |
| 文件頁數(shù)： | 7/13頁 |
| 文件大?。?/td> | 312K |
| 代理商： | SN54HCT646WR |
SN54HCT646, SN74HCT646
OCTAL BUS TRANSCEIVERS AND REGISTERS
WITH 3-STATE OUTPUTS
SCLS178C – MARCH 1984 – REVISED MARCH 2003
3
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
XX
X
L
H
H or L
X
H
X
↑
BUS
B
BUS
A
BUS
B
BUS
A
BUS
B
BUS
A
BUS
B
BUS
A
OE
Pin numbers shown are for the DW, JT, NT, and W packages.
Figure 1. Bus-Management Functions
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