MAX3491CPD+

Overview

The MAX3491CPD+ is a full-duplex RS-485/RS-422 transceiver operating from a single 3.0V to 3.6V supply. It contains one driver and one receiver in a 14-pin Plastic DIP package, rated for the commercial temperature range of 0°C to +70°C. The device supports data rates up to 10Mbps with a typical propagation delay of 22ns and skew of 8ns. Supply current is typically 2.2mA during operation and drops to 2nA in shutdown mode. Driver outputs feature short-circuit current limiting and thermal shutdown protection.

Feature Summary

• Full-duplex communication capability with independent driver and receiver enable controls
• Slew-rate-limited drivers minimize electromagnetic interference and reduce signal reflections
• Fail-safe receiver guarantees a logic-high output when inputs are left open
• Integrated thermal shutdown and current limiting protect against overload conditions

Applications

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

Procurement Notes

Verify the specific suffix 'PD' confirms the 14-pin Plastic DIP package and commercial temperature range. Confirm RoHS compliance status via the manufacturer's official documentation or ordering information table before procurement.

Selection Notes

Select this component for full-duplex RS-485/RS-422 applications requiring 10Mbps transmission speeds. Ensure the design accommodates the 14-pin DIP footprint and operates within the specified 3.0V to 3.6V voltage range.

Part Context

This part belongs to the MAX3483/MAX3485/MAX3486/MAX3488/MAX3490/MAX3491 family of low-power transceivers. Unlike half-duplex variants in the series, the MAX3491 provides simultaneous transmit and receive paths using separate driver and receiver channels.

Replacement Considerations

MAX3491EPD offers the same electrical specifications but extends the operating temperature range to -40°C to +85°C.