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ManualsBrandsLINEAR TECHNOLOGY ManualsInterface ICsInterface IC - transceivers Multi protocol 2/2 QFN 28
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LTC2870/LTC2871
27
28701fb
For more information www.linear.com/LTC2870
Typical applicaTions
Figure21. LTC2870 in
RS232 Mode
Figure22. LTC2870 in RS232
Mode with Loopback
Figure23. LTC2870 in RS485
Mode, Terminated
Figure24. LTC2870 in RS485
Mode in Loopback
Figure25. LTC2870 in RS485
Mode Half-Duplex
Figure26. LTC2870 in RS485
Mode, Half-Duplex, with
Loopback and Terminated
28701 F20
DXEN
V
L
LB
485/232
RXEN
DY
RB
GND
DZ
RA
Y
B
Z
A
LTC2870
28701 F21
485/232
RXEN
DY
RB
GND
DZ
RA
Y
B
Z
A
LTC2870
DXEN
LB
V
L
28701 F23
DXEN
V
L
RXEN
H/F
TE485
485/232
LB
DY
GND
RA
Y
B
Z
A
LTC2870
28701 F22
DXEN
V
L
RXEN
H/F
LB
485/232
TE485
DY
GND
RA
120Ω
Y
B
Z
A
LTC2870
120Ω
D R
28701 F24
485/232
V
L
RXEN
TE485
LB
H/F
DXEN
DY
GND
RA
Y
Z
LTC2870
28701 F25
485/232
H/F
LB
TE485
D R
RXEN
DXEN
V
L
DY
120Ω
120Ω
GND
RA
Y
B
Z
A
LTC2870
V
CC
= 3V to 5.5V, V
L
= 1.7V to V
CC
. Logic input pins not shown are tied to a valid logic state. External Components not shown.
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