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參數(shù)資料
| 型號(hào)： | SNJ54ABT646AFK |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 總線收發(fā)器 |
| 英文描述： | ABT SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, CQCC28 |
| 封裝： | CERAMIC, LCC-28 |
| 文件頁(yè)數(shù)： | 18/23頁(yè) |
| 文件大?。?/td> | 690K |
| 代理商： | SNJ54ABT646AFK |
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SN54ABT646A, SN74ABT646A
OCTAL BUS TRANSCEIVERS AND REGISTERS
WITH 3STATE OUTPUTS
SCBS069H JULY 1991 REVISED MAY 2004
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
FUNCTION TABLE
INPUTS
DATA I/Os
OPERATION OR FUNCTION
OE
DIR
CLKAB
CLKBA
SAB
SBA
A1A8
B1B8
OPERATION OR FUNCTION
X
↑
X
Input
Unspecified
Store A, B unspecified
X
XX
↑
X
Unspecified
Input
Store B, A unspecified
H
X
↑
X
Input
Store A and B data
H
X
H or L
X
Input disabled
Isolation, hold storage
L
X
L
Output
Input
Real-time B data to A bus
L
X
H or L
X
H
Output
Input
Stored B data to A bus
L
H
X
L
X
Input
Output
Real-time A data to B bus
L
H
H or L
X
H
X
Input
Output
Stored A data to B bus
The data-output functions can be enabled or disabled by various signals at OE and DIR. Data-input functions always are enabled, i.e., data at
the bus terminals is stored on every low-to-high transition of the clock inputs.
logic diagram (positive logic)
A1
B1
One of Eight
Channels
SAB
CLKAB
SBA
CLKBA
DIR
OE
To Seven Other Channels
Pin numbers shown are for the DB, DGV, DW, JT, NS, NT, PW, and W packages.
21
3
23
22
1
2
4
20
1D
C1
1D
C1
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| SNJ54ABT652AW | 制造商:Texas Instruments 功能描述: |
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