MAX3043CSE+T

Overview

The MAX3043CSE+T is a quad RS-485/RS-422 transmitter designed for digital data transmission over twisted-pair balanced lines. It operates from a single +5V supply and supports data rates up to 250kbps. The device features ±10kV ESD protection on all outputs and withstands ±4kV Electrical Fast Transient/Burst stress per IEC 1000-4-4. It includes hot-swap capability to prevent false transitions during power-up or insertion. Operating temperature range is 0°C to +70°C, housed in a 16-pin Narrow SO package.

Feature Summary

• Hot-swap capability prevents erroneous data transfer during board insertion or power-up sequences
• Outputs protected against ±10kV electrostatic discharge using the Human Body Model
• Slew-rate limiting minimizes electromagnetic interference and reduces signal reflections
• Low-power shutdown mode consumes only 2nA when enabled

Applications

• Telecommunications equipment
• Industrial motor control systems
• Transmitter applications requiring ESD sensitivity
• Hand-held industrial equipment
• Industrial PLC networks

Procurement Notes

Verify the specific suffix CSE corresponds to the 16-pin Narrow SO package and the commercial temperature range of 0°C to +70°C. Confirm RoHS compliance status through official manufacturer documentation before integration into production designs.

Selection Notes

Select this component for RS-485 or RS-422 bus architectures requiring robust transient immunity. Ensure system requirements align with the 250kbps maximum data rate limit. Verify that the narrow SO footprint fits the available PCB real estate constraints.

Part Context

This part belongs to the MAX3040–MAX3045 family of quad transmitters manufactured by Analog Devices / Maxim Integrated. It serves as a low-power upgrade to industry-standard devices like the SN75174 and DS26LS31C while offering enhanced ESD protection capabilities.

Replacement Considerations

Pin-compatible replacements include the MAX3040CSE, MAX3041CSE, and standard equivalents such as the SN75174 and LTC487. Verify data rate and temperature specifications match application needs when substituting.

FAQ

How does the hot-swap feature function?

The hot-swap inputs hold the enable pins in a disabled state during power-up or board insertion, preventing false transitions on the data cable caused by leakage currents or parasitic capacitance.

What is the maximum data rate for the MAX3043?

The MAX3043 supports a maximum data rate of 250kbps, utilizing slew-rate limiting to minimize EMI and reflections.

Is the MAX3043 compatible with RS-422 standards?

Yes, the MAX3043 is a quad RS-485/RS-422 transmitter designed to meet TIA/EIA-422-B and ITU-T V.11 standards.