MAX14781EESA+

The MAX14781EESA+ is a half-duplex RS485 transceiver with polarity correction in 8 pin NSOIC package. This half-duplex ±25KV ESD-protected RS485 transceiver features integrated automatic polarity correction to ensure that miswired lines are autonomously corrected, simplifying equipment and network installation. It includes slew-rate limited drivers that minimize EMI, allows error-free data transmission up to 370Kbps. This device includes fail-safe circuitry, a logic-high receiver output when the receiver inputs are shorted or open. Hot-swap functionality on the receiver and driver enable inputs also eliminates false transitions on the bus during power-up or live insertion. It has 1/8-unit load receiver input impedance allowing up to 256 transceivers on the bus. It is used in power meter networks, HVAC networks and control systems.

• Supply voltage range is 4.5V to 5.5V
• Operating temperature range from -40°C to 85°C
• ±15KV IEC 61000-4-2 air gap discharge ESD & ±9KV IEC 61000-4-2 contact discharge ESD
• True fail-safe receiver
• Low 10µA (max) shutdown current
• Maximum data rate of 370Kbps at driver
• Maximum data rate of 500Kbps at receiver
• Differential driver output skew is 140ns at RL = 54Ω, CL = 50pF
• Receiver output skew is 30ns at CL = 15pF

Applications

Communications & Networking

Warnings

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