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General Description

The MAX3440E–MAX3444E fault-protected RS-485 and J1708 transceivers feature ±60V protection from signal faults on communication bus lines. Each device contains one differential line driver with three-state output and one differential line receiver with three-state input. The 1/4-unit load receiver input impedance allows up to 128 transceivers on a single bus. The devices operate from a 5V supply at data rates of up to 10Mbps. True fail-safe inputs guar antee a logic-high receiver output when the receiver inputs are open, shorted, or connected to an idle data line.

Features

● ±15kV ESD Protection

● ±60V Fault Protection

● Guaranteed 10Mbps Data Rate (MAX3441E/MAX3443E)

● Hot Swappable for Telecom Applications

● True Fail-Safe Receiver Inputs

● Enhanced Slew-Rate-Limiting Facilitates Error-Free Data Transmission (MAX3440E/MAX3442E/MAX3444E)

● Allow Up to 128 Transceivers on the Bus

● -7V to +12V Common-Mode Input Range

● Automotive Temperature Range (-40°C to +125°C)

● Industry-Standard Pinout

Applications

● RS-422/RS-485 Communications

● Industrial Networks

● Telecommunications Systems

● HVAC Controls