Transceiver RS485, 1487, DIP8 - 


LTC1487CN8#PBF - Transceiver RS485, 1487, DIP8

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Product Overview

The LTC1487CN8#PBF is an ultralow power RS485 Transceiver with low EMI, shutdown and high input impedance allowing up to 256 transceivers to share a single bus. It meets the requirements of RS485 and RS422. The LTC1487 features output drivers with controlled slew rate, decreasing the EMI radiated from the RS485 lines and improving signal fidelity with misterminated lines. The CMOS design offers significant power savings without sacrificing ruggedness against overload or ESD damage. Typical quiescent current is only 80µA while operating and 1µA in shutdown. The driver and receiver feature three-state outputs with the driver outputs maintaining high impedance over the entire common-mode range. Excessive power dissipation caused by bus contention or faults is prevented by a thermal shutdown circuit which forces the driver outputs into a high impedance state. The receiver has a fail-safe feature which guarantees a high output state when the inputs are left open.
  • High input impedance (up to 256 transceivers on the bus)
  • Low power (ICC = 120µA maximum with driver disabled)
  • 200µA Maximum ICC with driver enabled, no load
  • 1µA Quiescent current in shutdown mode
  • Controlled slew rate driver for reduced EMI
  • Single 5V supply
  • ESD protection to ±10kV on receiver inputs and driver outputs
  • -7 to 12V Common-mode range permits ±7V ground difference between devices on the data line
  • Thermal shutdown protection
  • Power up/down glitch-free driver outputs permit live insertion or removal of transceiver
  • Driver maintains high impedance in three-state or with the power off
  • Pin compatible with the LTC485


Power Management, Signal Processing


ESD sensitive device, take proper precaution while handling the device.

Product Information

RS485 Transceiver
RS422, RS485
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