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LTC491CS Datasheet(PDF) 12 Page - Linear Technology |
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LTC491CS Datasheet(HTML) 12 Page - Linear Technology |
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12 / 12 page  LTC491 12 491fa ©LINEAR TECHNOLOGY CORPORATION 1992 LT/TP 0104 1K REV A • PRINTED IN USA RS232 Receiver RS232 to RS485 Level Transistor with Hysteresis TYPICAL APPLICATIO S LTC491 • TA02 5.6k RECEIVER RS232 IN 1/2 LTC491 RX 120 Ω DRIVER Y Z R = 220k 10k RS232 IN 5.6k LTC491 • TA03 HYSTERESIS = 10k Ω • ≈ 1/2 LTC491 VY - VZ ———— R 19k ———— R RELATED PARTS Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 q FAX: (408) 434-0507 q www.linear.com PART NUMBER DESCRIPTION COMMENTS LTC486/LTC487 Low Power Quad RS485 Drivers 110 µA Supply Current LTC488/LTC489 Low Power Quad RS485 Receivers 7mA Supply Current LTC1480 3.3V Supply RS485 Transceiver Lower Supply Voltage LTC1481 Low Power RS485 Transceiver with Shutdown Lowest Power LTC1482 RS485 Transceiver with Carrier Detect ±15kV ESD, Fail-Safe LTC1483 Low Power, Low EMI RS485 Transceiver Slew Rate Limited Driver Outputs, Lowest Power LTC1484 RS485 Transceiver with Fail-Safe ±15kV ESD, MSOP Package LTC1485 10Mbps RS485 Transceiver High Speed LTC1518/LTC1519 52Mbps Quad RS485 Receivers Higher Speed, LTC488/LTC489 Pin-Compatible LTC1520 LVDS-Compatible Quad Receiver 100mV Threshold, Low Channel-to-Channel Skew LTC1535 2500V Isolated RS485 Transceiver Full-Duplex, Self-Powered Using External Transformer LTC1685 52Mbps RS485 Transceiver Industry-Standard Pinout, 500ps Propagation Delay Skew LTC1686/LTC1687 52Mbps Full-Duplex RS485 Transceiver LTC490/LTC491 Pin Compatible LTC1688/LTC1689 100Mbps Quad RS485 Drivers Highest Speed, LTC486/LTC487 Pin Compatible LTC1690 Full-Duplex RS485 Transceiver with Fail-Safe ±15kV ESD, LTC490 Pin Compatible LT1785/LTC1785A ±60V Protected RS485 Transceivers ±15kV ESD, Fail-Safe (LT1785A) LT1791/LTC1791A ±60V Protected Full-Duplex RS485 Transceivers ±15kV ESD, Fail-Safe (LT1791A), LTC491 Pin Compatible |
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