ADI LTC1535ISW#TRPBF

ТрансиверRS422, RS485250 КБд

Overview

The LTC1535ISW is an isolated RS485 full-duplex differential line transceiver. Isolated RS485 is ideal for systems where the ground loop is broken to allow for much larger common mode voltage ranges. An internal capacitive isolation barrier provides 2500VRMS of isolation between the line transceiver and the logic level interface. The powered side contains a 420kHz push-pull converter to power the isolated RS485 transceiver. Internal full-duplex communication occurs through the capacitive isolation barrier. The transceiver meets RS485 and RS422 requirements.

The driver and receiver feature three-state outputs, with the driver maintaining high impedance over the entire common mode range. The drivers have short-circuit current limits in both directions and a slow slew rate select to minimize EMI or reflections. The 68kΩ receiver input allows up to 128 node connections. A fail-safe feature defaults to a high output state when the receiver inputs are open or shorted.

Features

Applications

• Satellite communications networks
• Ethernet circuitry
• Wired telephone
• Cordless telephone
• Desktop PC
• Notebook
• Pocket PC
• Desktop radio
• Clock radio
• Tuner