ISL32437EIUZ-T7A

ISL32437EIUZ-T7A is a 3.3V to 5V powered, fault protected, extended common-mode range differential transceiver for balanced communication. The RS-485 bus pins, driver outputs and receiver inputs, are protected against overvoltage up to ±40V and against ±15kV ESD strikes. Additionally, this transceiver operates in environments with common-mode voltages up to ±15V (exceeds the RS-485 requirement), making this RS-485 family one of the most robust on the market. The transmitters are RS-485 compliant with VCC ≥ 4.5V and deliver a 1.1V differential output voltage into the RS-485 specified 54ohm load even with VCC = 3V. Application includes utility meters/automated meter reading systems, air conditioning systems, security camera networks, building lighting and environmental control systems, industrial/process control networks. This cable invert pin corrects for reversed cable connections while maintaining Rx full fail-safe functionality.

• Half duplex, 0.25Mbps data rate, 2.1mA quiescent current, slew rate limited, cable invert (INV) pin
• Extended common-mode range ±15V, larger than required for RS-485
• 1/4 unit load for up to 128 devices on the bus
• High transient overvoltage tolerance is ±60V
• Full fail-safe (open, short, terminated) RS-485 receivers
• Ultra low shutdown supply current is 10µA
• 30mV typical receiver input hysteresis (-15V ≤ VCM ≤ 15V, -40°C to +85°C)
• 280ns typical driver differential output delay (RD = 54ohm, CD = 50pF)
• 8 lead MSOP package, operating temperature range from -40 to +85°C