MAX3294AUT+TCGD

Overview

The MAX3294AUT+TCGD is a low-power, high-speed transmitter for RS-485/RS-422 communication operating from a single +3.3V supply. It contains one differential transmitter with a maximum data rate of 2.5Mbps and features slew-rate limiting to minimize EMI. The device operates within an automotive temperature range of -40°C to +125°C and draws 5mA in normal operation, reducing to 1µA in shutdown mode. It includes hot-swap circuitry, short-circuit current limiting, and thermal-shutdown protection.

Feature Summary

• Slew-rate limited output to minimize electromagnetic interference and reduce reflections on improperly terminated cables
• Integrated hot-swap input structure prevents false transitions during board insertion or connection to live backplanes
• Built-in driver-overload protection via short-circuit current limiting and thermal-shutdown circuitry

Applications

• RS-485/RS-422 Communications
• Automotive Systems
• Industrial Control
• Telecom Equipment

Procurement Notes

Verify the specific suffix TCGD against official documentation to confirm tape-and-reel packaging and lead-free status. Confirm that the component meets AEC-Q100 qualification requirements if intended for automotive applications. Ensure the ordering information matches the exact manufacturer specifications before finalizing procurement.

Selection Notes

Select this component when a single-ended to differential conversion is required at speeds up to 2.5Mbps. The MAX3294 is appropriate for systems needing reduced EMI through slew-rate limiting. It serves as a dedicated transmitter without an integrated receiver, requiring separate components for full duplex communication.

Part Context

This part belongs to the MAX3293/MAX3294/MAX3295 family of low-power transmitters designed for RS-485/RS-422 interfaces. While the MAX3293 operates at 250kbps and the MAX3295 at 20Mbps, the MAX3294 provides an intermediate 2.5Mbps speed with slew-rate limiting. All variants share the same 6-pin SOT23 package and electrical protections.

Replacement Considerations

MAX3293AUT+T

FAQ

Does the MAX3294 include a receiver?

No, the MAX3294 is a transmitter only and does not contain a receiver.

What is the purpose of the slew-rate limitation in the MAX3294?

The slew-rate limitation minimizes electromagnetic interference (EMI) and reduces signal reflections caused by improperly terminated cables.

How does the hot-swap feature function?

The hot-swap circuitry holds the driver enable (DE) pin low for approximately 10µs during power-up to prevent false transitions on the data cable during initialization or connection to a live backplane.