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LTC1321IS Datasheet(PDF) 9 Page - Linear Technology |
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LTC1321IS Datasheet(HTML) 9 Page - Linear Technology |
9 / 20 page 9 LTC1321/LTC1322/LTC1335 FU CTIO TABLES LTC1321 Interface Configuration Without Loopback 1321BD01 RA1 VCC VDD A1 DY1 ON * SEL1/SEL2 = VCC Y1 PORT 1 = EIA562 MODE PORT 2 = EIA562 MODE DY2 Y2 SEL1 SEL2 24 22 1 3 5 6 7 8 20 19 LB 18 17 GND VEE 12 13 RA2 A2 10 15 PORT 1 = RS485 MODE PORT 2 = RS485 MODE VDD B1 A1 Z1 Y1 1 2 3 4 5 6 7 8 9 12 10 11 DY1 6 RA1 VCC VDD B1 A1 DE1 ON Z1 Y1 PORT 1 = RS485 MODE PORT 2 = EIA562 MODE DY2 Y2 *SEL1 SEL2 24 22 1 2 3 5 4 7 8 21 20 LB 18 19 17 GND VEE 12 13 RA2 A2 10 15 DY1 RA1 VCC DE1 ON DY2 DE2 24 22 21 20 LB 17 19 18 16 VEE 13 RA2 15 RA1 VCC VDD A1 DY1 ON DE2 Y1 PORT 1 = EIA562 MODE PORT 2 = RS485 MODE DY2 SEL1 24 22 1 3 5 6 7 8 9 20 19 LB 18 17 1 16 12 13 10 11 15 Y2 Z2 GND VEE RA2 B2 A2 Y2 Z2 A2 GND B2 *SEL2 *SEL2 *SEL1 RS485 Receiver Mode OUTPUT ON/OFF SEL OE A – B R 1 1 0 < – 0.2V 0 1 1 0 > 0.2V 1 1 1 0 Inputs Open 1 11 1 X Z 01 X X Z 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 11 0 X X Z Z 01 X X X Z Z INPUTS LTC1335 BLOCK DIAGRA SM 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 00 X X Z INPUTS EIA562 Receiver Mode OUTPUT ON/OFF SEL OE A OR B R 10 0 0 1 10 0 1 0 1 0 0 Input Open 1 10 1 X Z 00 X X Z |
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