ISL32450E中文资料60V Fault Protected, 3.3V to 5V, 20V CMR, 250kbps Full-duplex RS-485/RS-422, 15kV ESD数据手册Renesas规格书

描述 Description

The ISL3245xE are 3.3V to 5V powered, fault protected, extended Common-Mode Range (CMR) 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 commonmode 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 54Ω 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 (cable invert function on ISL32457E and ISL32459E).The ISL32457E and ISL32459E include a cable invert function that reverses the polarity of the Rx and Tx bus pins in case the cable is misconnected during installation.

特性 Features

• Fault protected RS-485 bus pins: up to ±60V
• ±15kV HBM ESD protection on RS-485 bus pins
• Cable invert pin (ISL32457E and ISL32459E only) corrects for reversed cable connections while maintaining Rx full fail-safe functionality
• High transient overvoltage tolerance: ±80V
• Choice of RS-485 data rates: up to 20Mbps
• Low quiescent supply current: 2.1mA

应用 Application

• Utility meters and automated meter reading systems
• Security camera networks
• Industrial and process control networks