MAX3444EASA+T

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 - unitload 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. Hot - swap circuitry eliminates false transitions on the data bus during circuit initialization or connection to a live backplane. Short - circuit current - limiting and thermal shutdown circuitry protect the driver against excessive power dissipation, and on - chip ± 15kV ESD protection eliminates costly external protection devices. The MAX3440E - MAX3444E are available in 8 - pin SO and PDIP packages and are specified over industrial and automotive temperature ranges.

Applications

• RS - 422/RS - 485 Communications
• Industrial Networks
• Telecommunications Systems
• HVAC Controls

Key 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