Datasheet

8
LTC1321/LTC1322/LTC1335
RS485 Receiver Mode
INPUTS OUTPUT
ON/OFF SEL A – B R
1 1 < –0.2V 0
1 1 > 0.2V 1
1 1 Inputs Open 1
01 XZ
RS485 Receiver Mode
INPUTS OUTPUT
ON/OFF SEL A – B R
1 1 < –0.2V 0
1 1 > 0.2V 1
1 1 Inputs Open 1
01 XZ
RS485 Driver Mode
INPUTS LINE OUTPUTS
ON/OFF SEL DE D CONDITION Y Z
1 1 1 0 No Fault 0 1
1 1 1 1 No Fault 1 0
1 1 1 X Fault Z Z
110X X ZZ
01XX X ZZ
RS485 Driver Mode
INPUTS LINE OUTPUTS
ON/OFF SEL DE D CONDITION Y Z
1 1 1 0 No Fault 0 1
1 1 1 1 No Fault 1 0
1 1 1 X Fault Z Z
110X X ZZ
01XX X ZZ
FU CTIO TABLES
UU
LTC1321 LTC1322
RS232/EIA562 Driver Mode
INPUTS LINE OUTPUT
ON/OFF SEL D CONDITION Y
1 0 0 No Fault 1
1 0 1 No Fault 0
1 0 X Fault Z
00X X Z
RS232/EIA562 Driver Mode
INPUTS LINE OUTPUT
ON/OFF SEL D CONDITION Y, Z
1 0 0 No Fault 1
1 0 1 No Fault 0
1 0 X Fault Z
00X X Z
RS232/EIA562 Receiver Mode
INPUTS OUTPUT
ON/OFF SEL A R
10 01
10 10
1 0 Inputs Open 1
00 XZ
RS232/EIA562 Receiver Mode
INPUTS OUTPUT
ON/OFF SEL A OR B R
10 01
10 10
1 0 Input Open 1
00 XZ