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 guarantee 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
    Truck and Trailer Applications
    Industrial Networks
    Telecommunications Systems
    Automotive Applications
    HVAC Controls