LTC1387 View Datasheet(PDF) - Linear Technology
Part Name
Description
Manufacturer
LTC1387 Datasheet PDF : 12 Pages
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LTC1387
APPLICATI S I FOR ATIO
RS232 RS485
A
A
TXD
INTERFACE RS232 RS485
B
B
RXD
Y
Z
LTC1387
RA
RB
DY
DZ
RA
RB
DY
DZ/SLEW VCC
ON
RXEN
DXEN
485/232
RX
CONTROLLER
DX
RXEN
DXEN
MODE
RS232
MODE
RXEN = 1
DXEN = 0
MODE = 0
RS485
TRANSMIT MODE
RXEN = 0
DXEN = 1
MODE = 1
RS485
RECEIVE MODE
RXEN = 1
DXEN = 0
MODE = 1
Figure 14. Full-Duplex RS232 (1-Channel), Half-Duplex RS485
SHUTDOWN
MODE
RXEN = 0
DXEN = 0
MODE = 0
1387 • F14
RS232 RS485
A
A
RXD
RS485
B
B
INTERFACE RS232 RS485
Y
Y
TXD
RS485
Z
Z
LTC1387
RA
RB
DY
DZ
RA
RB
DY
DZ/SLEW VCC
ON
RXEN
DXEN
485/232
RX
CONTROLLER
DX
RXEN
DXEN
MODE
RS232
MODE
RXEN = 1
DXEN = 1
MODE = 0
RS485
MODE
RXEN = 1
DXEN = 1
MODE = 1
Figure 15. Full-Duplex RS232 (1-Channel), Full-Duplex RS485/RS422
SHUTDOWN
MODE
RXEN = 0
DXEN = 0
MODE = X
1387 • F15
RS232 RS485
A
A
RXD
RS232 RS485
B
B
CTS
INTERFACE RS232 RS485
Y
Y
TXD
RS232 RS485
Z
Z
RTS
LTC1387
RA
RB
DY
DZ
RA
RB
DY
DZ/SLEW
ON
RXEN
DXEN
485/232
RX1
RX2
CONTROLLER
DX1
DX2/SLEW
ON
RXEN
DXEN
MODE
RS232
MODE
ON = 1
RXEN = 1
DXEN = 1
MODE = 0
RS485
MODE
ON = 1
RXEN = 1
DXEN = 1
MODE = 1
Figure 16. Full-Duplex RS232 (2-Channel), Full-Duplex RS485/RS422 with SLEW Control
SHUTDOWN
MODE
ON = 0
RXEN = 0
DXEN = 0
MODE = X
1387 • F16
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
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