參數(shù)資料
型號: SN54ABT657A
廠商: Texas Instruments, Inc.
英文描述: Octal Transceivers With Parity-Generators/Checkers and 3-State Outputs(八收發(fā)器(帶奇偶發(fā)生器/校驗(yàn)器))
中文描述: 八路收發(fā)器與Parity-Generators/Checkers和三態(tài)輸出(八收發(fā)器(帶奇偶發(fā)生器/校驗(yàn)器))
文件頁數(shù): 2/9頁
文件大?。?/td> 219K
代理商: SN54ABT657A
SN54ABT657A, SN74ABT657A
OCTAL TRANSCEIVERS WITH PARITY GENERATORS/CHECKERS
AND 3-STATE OUTPUTS
SCBS192E – JANUARY 1991 – REVISED JUNE 1997
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
description (continued)
When V
CC
is between 0 and 2.1 V, the device is in the high-impedance state during power up or power down.
However, to ensure the high-impedance state above 2.1 V, OE should be tied to V
CC
through a pullup resistor;
the minimum value of the resistor is determined by the current-sinking capability of the driver.
The SN54ABT657A is characterized for operation over the full military temperature range of –55
°
C to 125
°
C.
The SN74ABT657A is characterized for operation from –40
°
C to 85
°
C.
FUNCTION TABLE
NUMBER OF A OR B
INPUTS THAT ARE HIGH
INPUTS
I/O
OUTPUTS
OE
T/R
ODD/EVEN
PARITY
ERR
OUTPUT MODE
0 2 4 6 8
0, 2, 4, 6, 8
L
H
H
H
Z
Transmit
L
H
L
L
Z
Transmit
L
L
H
H
H
Receive
L
L
H
L
L
Receive
L
L
L
H
L
Receive
L
L
L
L
H
Receive
1 3 5 7
1, 3, 5, 7
L
H
H
L
Z
Transmit
L
H
L
H
Z
Transmit
L
L
H
H
L
Receive
L
L
H
L
H
Receive
L
L
L
H
H
Receive
L
L
L
L
L
Receive
Don’t care
H
X
X
Z
Z
Z
相關(guān)PDF資料
PDF描述
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