Maxim MAX3072EESA+

收发器RS422，RS485250kbps

Overview

The MAX3070E–MAX3079E 3.3V, ±15kV ESD-protected, RS-485/RS-422 transceivers feature one driver and one receiver. These devices include fail-safe circuitry, guaranteeing a logic-high receiver output when receiver inputs are open or shorted. The receiver outputs a logic high if all transmitters on a terminated bus are disabled (high impedance). The MAX3070E–MAX3079E include a hot-swap capability to eliminate false transitions on the bus during power-up or hot insertion.

The MAX3070E-MAX3079E transceivers draw 800μA of supply current when unloaded or when fully loaded with the drivers disabled. All devices have a 1/8-unit load receiver input impedance, allowing up to 256 transceivers on the bus.

Features

Supply Voltage (VCC): +6V

Driver Input Voltage (DI): -0.3V to +6V

Driver Output Current: ±250mA

Storage Temperature Range: -65°C to +150°C

Operating Temperature Ranges: -40°C to +85°C

±15kV Human Body Model ESD on I/O Pins

Pin-Selectable Full/Half-Duplex Operation

Applications

Lighting Systems

Industrial Control

Telecom

Security Systems

Instrumentation