MAX3441E

MAX3440E–MAX3444E ±15kV ESD-Protected, ±60V Fault-Protected, 10Mbps, Fail-Safe RS-485/J1708 Transceivers 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-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 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 Facilitate...