MAX481MSA/PR

Overview

The MAX481MSA/PR is a low-power, slew-rate-limited RS-485 and RS-422 transceiver manufactured by Analog Devices Inc. (Maxim Integrated). It integrates one driver and one receiver within a single package. The device operates on a single +5V supply and supports data transmission rates up to 250kbps. Its reduced slew rate minimizes electromagnetic interference (EMI) and reduces signal reflections caused by improperly terminated cables, ensuring error-free communication in noisy environments.

Feature Summary

• Slew-rate-limited drivers designed to minimize electromagnetic interference (EMI)
• Optimized for error-free data transmission over improperly terminated cables
• Low-power operation suitable for battery-powered or energy-efficient systems

Applications

• RS-485 communication networks requiring EMI reduction
• RS-422 point-to-point or multi-drop serial interfaces
• Industrial control systems with long cable runs
• Building automation and security systems

Procurement Notes

Verify the specific suffix /PR against official Analog Devices documentation to confirm package type and temperature range. Confirm current availability status as legacy components may be discontinued or subject to limited supply. Ensure compatibility with existing system voltage levels and interface requirements before procurement.

Selection Notes

Select this component when EMI suppression is critical for signal integrity in RS-485 or RS-422 applications. It is appropriate for systems operating at data rates up to 250kbps where standard slew rates might cause excessive noise. Compare against non-slew-limited variants if higher speed is required, noting that those parts do not offer the same reflection mitigation benefits.

Part Context

This part belongs to the Maxim Integrated MAX48x family of low-power transceivers. It shares functional similarities with the MAX483, MAX487, MAX488, and MAX489, which also feature slew-rate limiting. Unlike the MAX481E or MAX485, which support higher speeds up to 2.5Mbps without slew limiting, this variant prioritizes signal quality over maximum throughput in noisy industrial environments.