MAX3491EPD+

Overview

The MAX3491EPD+ is a full-duplex RS-485/RS-422 transceiver operating from a single 3.0V to 3.6V supply. It integrates one driver and one receiver in a 14-pin Plastic DIP package, supporting data rates up to 10Mbps with an 8ns maximum skew. The device features a low-power shutdown mode drawing typically 2nA, fail-safe receiver inputs, and thermal shutdown protection. It operates within a -40°C to +85°C temperature range.

Feature Summary

• Full-duplex communication capability with independent driver and receiver enable controls
• Low-power shutdown mode for significant current reduction when disabled
• Fail-safe receiver design ensuring a logic-high output during open-circuit conditions
• Thermal shutdown circuitry protecting against excessive power dissipation

Applications

• Telecommunications systems requiring robust serial communication
• Industrial-control local area networks (LANs)
• Transceivers designed for EMI-sensitive applications

Procurement Notes

Verify the specific ordering suffix 'PD' corresponds to the 14-pin Plastic DIP package variant. Confirm that the component meets RoHS compliance standards required for the target assembly process. Ensure the extended industrial temperature rating aligns with environmental specifications.

Selection Notes

Select this component for designs requiring full-duplex operation at speeds up to 10Mbps. It is suitable for applications needing fail-safe inputs and low standby current via shutdown mode. Verify compatibility with +5V logic levels if interfacing with higher voltage controllers.

Part Context

This part belongs to the MAX3483/MAX3485/MAX3486/MAX3488/MAX3490/MAX3491 family of 3.3V-powered transceivers. Unlike half-duplex variants, it provides separate transmit and receive lines. It shares pinout similarities with industry-standard parts while offering enhanced low-power features.

Replacement Considerations

MAX3491CPD serves as the commercial-grade alternative with a 0°C to +70°C temperature range.