參數(shù)資料
型號(hào): LTC1387I
廠商: Linear Technology Corporation
英文描述: Single 5V RS232/RS485 Multiprotocol Transceiver
中文描述: 單5V RS232/RS485轉(zhuǎn)換多協(xié)議收發(fā)器
文件頁(yè)數(shù): 6/12頁(yè)
文件大?。?/td> 167K
代理商: LTC1387I
6
LTC 1387
FU CTIO TABLES
Select Modes
SELECT INPUTS
RXEN DXEN
0
0
1
1
RECEIVER
RXA
Z
Z
ON
ON
DRIVER
DXY
Z
ON
Z
ON
ON
1
1
1
1
485/232
0
0
0
0
RXB
Z
Z
ON
ON
DXZ
Z
ON
Z
ON
0
1
0
1
ON
ON
ON
ON
OFF
OFF
OFF
OFF
RS232 Mode, DX and RX Off
RS232 Mode, DXY and DXZ On, RX Off
RS232 Mode, DX Off, RXA and RXB On
RS232 Mode, DXY and DXZ On,
RXA and RXB On
RS232 Mode, DXY On, DXZ Off, RX Off
RS232 Mode, DXY On,
DXZ Off, RXA Off, RXB On
RS232 Loopback Mode, DXY and DXZ On,
RXA and RXB On
Shutdown, RS485 R
IN
RS485 Mode, DX and RX Off
RS485 Mode, DX On, RX Off
RS485 Mode, DX Off, RX On
RS485 Mode, DX On, RX On
RS485 Loopback Mode, DX On, RX On
0
0
0
1
1
0
0
0
Z
Z
Z
ON
ON
Z
Z
ON
ON
OFF
OFF
ON
0
1
1
0
ON
ON
ON
ON
ON
ON
0
1
X
X
1
0
0
0
0
1
1
1
0
0
1
0
1
1
X
1
1
1
1
1
Z
Z
Z
Z
Z
Z
Z
Z
Z
Z
Z
Z
Z
OFF
ON
ON
ON
ON
ON
OFF
OFF
OFF
OFF
OFF
ON
ON
Z
ON
ON
ON
Z
ON
ON
ON
ON
ON
RS232 Driver Mode
INPUTS
485/232
OUTPUTS
Y, Z
SELECTED
D
CONDITIONS
YES
YES
YES
NO
0
0
0
0
0
1
X
X
No Fault
No Fault
Thermal Fault
X
1
0
Z
Z
RS232 Receiver Mode
INPUTS
485/232
OUTPUTS
R
A
, R
B
1
0
1
Z
SELECTED
A, B
YES
YES
YES
NO
0
0
0
0
0
1
Inputs Open
X
RS485 Driver Slew Rate
INPUTS
485/232
OUTPUTS
SLEW RATE
DXEN
SLEW
1
1
0
1
1
1
0
1
X
Slow
Fast
Z
RS485 Driver Mode
INPUTS
485/232
OUTPUTS
Z
DXEN
D
CONDITIONS
Y
1
1
1
0
1
1
1
1
0
1
X
X
No Fault
No Fault
Thermal Fault
X
0
1
Z
Z
1
0
Z
Z
RS485 Receiver Mode
INPUTS
485/232
OUTPUTS
R
A
0
RXEN
B – A
R
B
Z
1
1
< –0.2V
1
1
> 0.2V
1
Z
1
1
Inputs Open
or Shorted to Ground
1
Z
0
1
X
Z
Z
CHARGE PUMP
LOOPBACK
COMMENTS
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