MAX3442EESA+

MAX3442EESA+ is a fault-protected RS-485 transceiver. It features ±60V protection from signal faults on communication bus lines. This 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. 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. It is used in applications such as RS-422/RS-485 communications, industrial networks, telecommunications systems, HVAC controls.

• 0.25Mbps data rate, low power shutdown
• Receiver/driver enable, 128 transceiver on bus, hot swap
• Input receiver current is 250µA maximum at (VCC = GND, VA, B = 12V)
• Receiver input hysteresis is 12mV typical at (VCC = +4.75V to +5.25V)
• Receiver input resistance is 48Kohm minimum at (-7V ≤ VCM ≤ +12V)
• Supply current in normal operation is 30mA max at (no load, DI = VCC or GND)
• Supply current in shutdown mode is 10µA max at (VCC = +4.75V to +5.25V)
• Driver propagation delay is 2000ns maximum at (RL = 54ohm, CL = 50pF)
• Receiver propagation delay is 2000ns maximum at (CL = 20pF, VID = 2V, VCM = 0V)
• Operating temperature range from -40°C to +85°C, 8-pin SO package

Warnings

ESD sensitive device, take proper precaution while handling the device. Market demand for this product has caused an extension in leadtimes. Delivery dates may fluctuate. Product exempt from discounts.

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party