MAX3081CSA+

Overview

The MAX3081CSA+ is a full-duplex RS-422/RS-485 transceiver featuring one driver and one receiver. It operates on a single +5V supply (4.75V to 5.25V) with a typical quiescent current of 375µA. The device incorporates fail-safe circuitry that guarantees a logic-high receiver output when inputs are open or shorted. It supports data transmission rates up to 115kbps via slew-rate-limited drivers, which minimize EMI and reflections. The component utilizes an 8-pin SOIC package and provides 1/8-unit-load receiver input impedance.

Feature Summary

• Fail-safe circuitry ensures a logic-high receiver output during bus idle or fault conditions
• Slew-rate-limited drivers reduce electromagnetic interference and signal reflections
• High input impedance allows connection of up to 256 transceivers on a single bus

Applications

• RS-422 and RS-485 communication networks
• Industrial control local area networks
• Level translation applications
• Transceivers for EMI-sensitive environments

Procurement Notes

Verify the specific suffix CSA+ against official documentation to confirm the 8-SOIC package and commercial temperature range. Confirm RoHS compliance status through manufacturer datasheets. Ensure the ordering information matches the required operational temperature specifications before procurement.

Selection Notes

Select this component for full-duplex applications requiring error-free transmission at speeds up to 115kbps. The integrated fail-safe feature is critical for maintaining system stability during bus faults. Consider the 1/8-unit-load capability if designing networks with high node density.

Part Context

This device belongs to the MAX3080–MAX3089 family of high-speed transceivers designed for RS-485/RS-422 standards. While other variants in the series offer higher data rates or half-duplex configurations, the MAX3081 specifically targets full-duplex communication with reduced slew rates for noise mitigation.

Replacement Considerations

The MAX3081 is pin-compatible with industry-standard devices like the 75179. Verify functional equivalence regarding fail-safe thresholds and unit load specifications when substituting.