MAX14784EASD+T

Drivers, Receivers, Transceivers Overview

The MAX14784EASD+T is a full-duplex RS-485 transceiver designed for robust industrial communication. It operates from a 3.0V to 5.5V supply with a maximum no-load current of 4mA and features ±35kV ESD protection on I/O ports. The device supports data rates up to 500kbps, utilizing slew-rate limited outputs and an integrated receiver deglitch filter to minimize EMI and enhance noise immunity. It includes true fail-safe receivers, short-circuit protected outputs, and thermal shutdown. The component is housed in a 14-pin SO package and functions within a temperature range of -40°C to +125°C.

Drivers, Receivers, Transceivers Feature Summary

• Integrated receiver deglitch filter enhances noise immunity during signal transmission over long cables.
• Slew-rate limited driver outputs reduce electromagnetic interference and reflections caused by unterminated lines.
• True fail-safe receiver guarantees a logic-high output when inputs are open or shorted.

Drivers, Receivers, Transceivers Applications

• Motion Controllers
• Encoder Interfaces
• HVAC Control Systems
• Utility Meters

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to confirm package type and RoHS compliance status. Ensure that the selected variant matches the required operating temperature range and pin configuration for your specific PCB layout. Cross-reference the datasheet revision history to confirm the accuracy of electrical characteristics before finalizing procurement specifications.

Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring high-speed full-duplex communication with enhanced noise immunity. The integrated deglitch filter and slew-rate limiting make it suitable for environments with significant electrical noise or improperly terminated cables. Verify that the system power supply remains within the 3.0V to 5.5V range to ensure proper operation of the internal circuitry.

Drivers, Receivers, Transceivers Part Context

This part belongs to the MAX14784E/MAX14786E/MAX14787E/MAX14789E family of full-duplex RS-485 transceivers. These devices share common architectural features such as ±35kV ESD protection and low-power shutdown modes. The MAX14784E specifically differentiates itself through its optimized performance for long cable runs via slew-rate limiting and deglitching capabilities.

Drivers, Receivers, Transceivers Replacement Considerations

The MAX14786EASD+ serves as a functional substitute within the same series, offering identical packaging and pinout but supporting higher data rates up to 25Mbps without slew-rate limiting or deglitch filtering. Verify compatibility regarding signal integrity requirements before substitution.

Drivers, Receivers, Transceivers FAQ

How does the MAX14784E handle bus contention?

The device incorporates short-circuit protected outputs and thermal shutdown circuitry. If excessive power dissipation occurs due to faults, the thermal shutdown forces the driver outputs into a high-impedance state to protect the component.

What is the function of the receiver deglitch filter?

The integrated deglitch filter reduces false triggers caused by noise or slow rise/fall times on the differential receiver input. It filters signals after the differential input but before the RO output to maintain bus integrity.

Can the MAX14784E operate in half-duplex mode?

Yes, although designed as a full-duplex transceiver, it can be configured for half-duplex operation by connecting the Y output to the A input and the Z output to the B input.