MAX3082CSA+

Overview

The MAX3082CSA+ is a half-duplex RS-485/RS-422 transceiver manufactured by Analog Devices Inc. (Maxim Integrated). It operates on a single +5V supply and features fail-safe circuitry that guarantees a logic-high receiver output when inputs are open or shorted. The device incorporates reduced slew-rate drivers to minimize electromagnetic interference and reflections, supporting data transmission rates up to 115kbps. It includes one driver and one receiver with independent enable controls for low-power shutdown operation.

Feature Summary

• Fail-safe receiver circuitry ensures a high logic state during bus idle or fault conditions
• Slew-rate limited driver design reduces electromagnetic emissions and signal reflections
• Low quiescent current consumption supports power-efficient system designs
• High input impedance allows connection of up to 256 units on a single bus

Applications

• RS-422 and RS-485 communication networks
• Industrial control local area networks
• EMI-sensitive application environments

Procurement Notes

Verify the specific suffix CSA+ against official documentation to confirm package type and temperature range. Confirm RoHS compliance status through manufacturer datasheets. Ensure compatibility with existing board layouts regarding SOIC-8 footprint dimensions and pin assignments before finalizing procurement orders.

Selection Notes

Select this component for applications requiring half-duplex communication at speeds up to 115kbps. The reduced slew rate makes it suitable for noisy industrial environments where EMI suppression is critical. Verify that the +5V supply voltage aligns with system requirements and that the commercial temperature range meets operational needs.

Part Context

This device belongs to the MAX3080–MAX3089 family of high-speed transceivers designed for RS-485/RS-422 interfaces. It shares architectural similarities with other members like the MAX3085 and MAX3088 but differs in duplex mode and maximum data rate specifications. The family provides scalable solutions for various baud rate and EMI requirements.

Replacement Considerations

The MAX3085EESA+ serves as a pin-compatible alternative within the same series. Verify that the higher 500kbps data rate capability of the replacement does not introduce unintended signal integrity issues in the target application.