ISL32452EIUZ-T

The ISL32452E is 3.3V to 5V powered, fault protected, extended common mode range differential transceivers for balanced communication. The RS-485 bus pins (driver outputs and receiver inputs) are protected against overvoltages up to ±60V, and against ±15kV ESD strikes. These transceivers operate in environments with common mode voltages up to ±20V (exceeds the RS-485 requirement), making this RS-485 family one of the more robust on the market. Transmitters are RS-485 compliant with VCC = 4.5V and deliver a 1.1V differential output voltage into the RS-485 specified 54? load even with VCC = 3V. Receiver (Rx) inputs feature a “Full Fail-Safe” design, which ensures a logic-high Rx output if Rx inputs are floating, shorted, or on a terminated but undriven (idle) bus. Rx full fail-safe operation is maintained even when the Rx input polarity is switched.

• Fault Protected RS-485 Bus Pins Up to ±60V
• Extended Common Mode Range ±20V Larger Than Required for RS-485
• ±15kV HBM ESD Protection on RS-485 Bus Pins
• Wide Supply Range 3V to 5.5V
• Cable Invert Pin (ISL32457E Only) Corrects for Reversed Cable Connections While Maintaining Rx Full Fail-safe Functionality
• 1/4 Unit Load for Up to 128 Devices on the Bus
• High Transient Overvoltage Tolerance ±80V
• Full Fail-safe (Open, Short, Terminated) RS-485 Receivers
• Choice of RS-485 Data Rates 250kbps or 1Mbps
• Low Quiescent Supply Current 2.1mA Ultra Low Shutdown Supply Current 10µA
• Pb-Free (RoHS Compliant)