LTC1690IS8#PBF

LTC1690 is a low power receiver/driver pair that is compatible with the requirements of RS485 and RS422. The receiver offers a fail-safe feature that guarantees a high receiver output state when the inputs are left open, shorted together or terminated with no signal present. No external components are required to ensure the high receiver output state. Separate driver output and receiver input pins allow full duplex operation. 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 used in application such as battery-powered RS485/RS422 applications, low power RS485/RS422 transceiver, level translator, line repeater etc.

• Drives low cost residential telephone wires
• Power-up/down glitch-free driver outputs permit live insertion or removal of transceiver
• Driver maintains high impedance with the power off
• Upto 32 transceivers on the bus, single 5V supply
• Pin compatible with the SN75179 and LTC490
• Supply current is 260µA typical at (TA = 25°C, VCC = 5V ±5%)
• –7V to 12V common mode range permits ±7V ground difference between devices on the data line
• Receiver short-circuit current is 85mA max at (0V ≤ VO ≤ VCC, TA = 25°C, VCC = 5V ±5%)
• Operating temperature is -40°C to 85°C
• Package style is 8-lead plastic NSOIC

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party