Datasheet

LTC2870/LTC2871
27
28701f
TYPICAL APPLICATIONS
Figure 38. LTC2870: Making Use of Shared I/O for Various Communication Configurations
Figure 39. LTC2870: Using External Connections for Half-Duplex RS232 or RS485 Operation
28701 F38
LTC2870
1.7V TO V
CC
3V TO 5.5V
485/232
RXEN
DXEN
TE485
H/F
DY
Y
Z
A
B
DZ
RA
RB
V
L
V
L
CONTROLLER
CONNECTOR
V
CC
GND
RS485
RS485
FULL-DUPLEX
485/232 = 1
H/F = 0
RS485
HALF-DUPLEX
485/232 = 1
H/F = 1
RS232
FULL-DUPLEX
485/232 = 0
H/F = X
RS485
RS485
RS485
RS485
RS485
RS232
RS232
RS232
RS232
28701 F39
LTC2870
1.7V TO V
CC
3V TO 5.5V
485/232
RXEN
DXEN
H/F
DY
Y
Z
A
B
DZ
RA
RB
V
L
V
L
CONTROLLER
CONNECTOR
V
CC
TE485
GND
RS485
RS485
HALF-DUPLEX
485/232 = 1
H/F = 0
RS232
HALF-DUPLEX
485/232 = 0
H/F = X
RS485
RS232
RS232