MAX3041CSE+

Overview

The MAX3041CSE+ 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 2.5Mbps with slew-rate limiting to minimize EMI. The device features ±10kV Human Body Model 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 supply current is typically 1mA, with a low-power shutdown mode consuming 2nA. The component is housed in a 16-pin Narrow SO package and operates within a temperature range of 0°C to +70°C.

Feature Summary

• Slew-rate limited output drivers reduce electromagnetic interference and signal reflections on improperly terminated cables.
• Integrated hot-swap circuitry maintains disabled states during power-up or board insertion to prevent erroneous data transfer.
• Outputs provide robust protection against electrostatic discharge and fast transient bursts without damage.
• Low-power shutdown mode significantly reduces energy consumption when the transmitters are not active.

Applications

• Telecommunications equipment
• Industrial motor control systems
• Hand-held equipment requiring ESD-sensitive transmission
• Industrial PLCs
• Networking applications

Procurement Notes

Verify that the ordering suffix matches the required package type and temperature rating. Confirm compliance with RoHS standards if lead-free components are mandatory for the assembly process. Ensure the specific variant aligns with the system's voltage and interface requirements before finalizing procurement orders.

Selection Notes

Select this model for applications requiring 2.5Mbps data rates with enhanced noise immunity. It serves as a pin-compatible upgrade to industry-standard parts like the SN75174. Consider the narrow SO package for space-constrained designs. Pair with compatible receivers such as the MAX3093E or MAX3095 for optimal performance.

Part Context

This component belongs to the MAX3040–MAX3045 family of quad RS-485/RS-422 transmitters. The family offers various speed options, including 250kbps, 2.5Mbps, and 20Mbps variants. All members share similar protection features and packaging options, allowing for flexible design integration across different industrial and commercial communication protocols.

Replacement Considerations

The MAX3041CSE+ is pin-compatible with the 'SN75174, 'DS26LS31C, and LTC487. Designers can substitute these legacy components with the MAX3041CSE+ to gain improved ESD protection and lower power consumption without altering the PCB layout.

FAQ

How does the hot-swap feature function during power-up?

The hot-swap inputs hold the enable pins in a disabled state while VCC ramps up. This prevents leakage currents or parasitic capacitance from causing false transmitter activation and erroneous data on the bus.

What is the typical supply current in shutdown mode?

In the low-power shutdown mode, the MAX3041CSE+ consumes approximately 2nA of supply current, making it suitable for battery-powered or energy-efficient applications.

Does the device support both RS-485 and RS-422 protocols?

Yes, the MAX3041CSE+ is a quad transmitter designed for both RS-485 and RS-422 digital data transmission over twisted-pair balanced lines.