MAX3044CSE+

Overview

The MAX3044CSE+ is a quad RS-485/RS-422 transmitter operating from a single +5V supply. It supports data rates up to 2.5Mbps with slew-rate limiting to minimize EMI and reduce reflections. The device features ±10kV Human Body Model ESD protection 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 current is 1mA, with a shutdown mode consuming 2nA. It operates within a temperature range of -40°C to +85°C and is housed in a 16-pin Narrow SO package.

Feature Summary

• Hot-swap inputs eliminate false transitions on the data cable during power-up or hot insertion
• Slew-rate limited outputs minimize electromagnetic interference (EMI) and reduce signal reflections
• Integrated ±10kV ESD protection and ±4kV electrical fast transient immunity for robust operation
• Low-power shutdown mode reduces standby consumption to 2nA

Applications

• Telecommunications equipment
• Industrial motor control systems
• Transmitter applications requiring ESD sensitivity
• Hand-held industrial equipment
• Industrial PLCs and networking devices

Procurement Notes

Verify the specific suffix 'CSE+' against official documentation to confirm the commercial temperature range (-40°C to +85°C), narrow SOIC-16 package type, and lead-free status. Ensure compatibility with existing board layouts by confirming pin assignments match the standard industry pinout for this family.

Selection Notes

Select the MAX3044 variant specifically when a guaranteed data rate of 2.5Mbps is required, as opposed to the 250kbps MAX3040/MAX3043 or the 20Mbps MAX3042B/MAX3045B. This component is suitable for designs needing integrated ESD protection and hot-swap functionality without external discrete components.

Part Context

This component belongs to the MAX3040–MAX3045 family of quad 5V RS-485/RS-422 transmitters. It serves as an upgrade to industry-standard parts like the SN75174 and DS26LS31C, offering enhanced ESD protection and lower power consumption while maintaining pin compatibility.

Replacement Considerations

Pin-compatible replacements include the SN75174 and DS26LS31C. Verify that substitute components meet the required 2.5Mbps data rate specification and provide equivalent ±10kV ESD protection levels.