LTC1487CN8#PBF

LTC1487 is an ultra-low power differential line transceiver designed with high impedance inputs allowing upto 256 transceivers to share a single bus. It meets the requirements of RS485 and RS422. It 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. 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. It is widely used in application such as battery-powered RS485/RS422 applications, low power RS485/RS422 transceiver, level translator etc.

• Supply current is 120µA typical
• Supply current in shutdown mode is 1µA typical at (DE = 0V, RE = VCC)
• ESD protection to ±10KV on receiver inputs and driver outputs
• –7V 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
• Operating temperature is 0°C to 70°C
• Package style is 8-lead PDIP

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