MAX3043ESE+

Overview

The MAX3043ESE+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 with slew-rate limiting to minimize EMI. The device features ±10kV Human Body Model ESD protection and ±4kV IEC 1000-4-4 Electrical Fast Transient immunity. It includes hot-swap capability to prevent false transitions during power-up or insertion. Operating temperature range is -40°C to +85°C, housed in a 16-pin Narrow SO package.

Feature Summary

• Slew-rate limited outputs reduce electromagnetic interference and cable reflections
• Hot-swap inputs eliminate false data transitions during board insertion or power-up
• Robust electrostatic discharge protection on all transmitter outputs
• Low-power shutdown mode significantly reduces standby current consumption

Applications

• Telecommunications equipment
• Industrial motor control systems
• Transmitters for ESD-sensitive applications
• Hand-held industrial equipment
• Industrial PLCs and networking

Procurement Notes

Verify the component authenticity by checking the manufacturer marking against official datasheet specifications. Confirm the suffix 'E' indicates the extended temperature range of -40°C to +85°C and 'SE' denotes the narrow SOIC package. Ensure the '+T' designation matches the required reel packaging format for surface-mount assembly processes.

Selection Notes

Select this component when designing systems requiring quad differential drivers with high noise immunity. It serves as a pin-compatible upgrade to industry-standard devices like the SN75174. Choose this model specifically for its 250kbps slew-rate limited performance, which ensures error-free transmission on improperly terminated cables compared to faster non-limited variants.

Part Context

This part belongs to the MAX3040–MAX3045 family of 5V quad transmitters. While the MAX3040/MAX3043 operate at 250kbps, the MAX3041/MAX3044 support 2.5Mbps, and the MAX3042B/MAX3045B reach 20Mbps. All share similar ESD protection and hot-swap features but differ in maximum data rate capabilities and specific enable pin logic configurations.

Replacement Considerations

Public confirmed substitutes include the MAX3040ESE+T for lower speed requirements and the MAX3041ESE+T for higher speed needs within the same package. These parts maintain pin compatibility with legacy standards such as the SN75174 and DS26LS31C.