MAX3082CPA

Overview

The MAX3082CPA+ is a half-duplex RS-485/RS-422 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 supports data rates up to 115kbps via slew-rate-limited drivers, which minimize EMI and reflections. It incorporates fail-safe circuitry that guarantees a logic-high receiver output when inputs are open or shorted. The component provides 1/8-unit-load receiver impedance, allowing up to 256 transceivers on the bus, and is housed in an 8-pin PDIP package.

Feature Summary

• Fail-safe circuitry ensures a logic-high receiver output during idle or fault conditions
• Slew-rate-limited drivers reduce electromagnetic interference and signal reflections
• High input impedance allows for extensive network topologies with up to 256 nodes

Applications

• RS-422/RS-485 communications
• Level translators
• Transceivers for EMI-sensitive applications
• Industrial-control local area networks

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm temperature range and packaging type. Ensure the component matches the required half-duplex configuration and interface standards before integration into the design.

Selection Notes

Select this component for applications requiring robust noise immunity and low power consumption in half-duplex environments. The integrated fail-safe feature simplifies system design by handling bus faults without external components.

Part Context

This device belongs to the MAX3080–MAX3089 family of high-speed transceivers designed for RS-485 and RS-422 communication protocols. It shares core architectural features with siblings like the MAX3080 and MAX3081 but is specifically configured for half-duplex operation.

Replacement Considerations

The MAX3082EESA+ is a pin-compatible surface-mount alternative within the same product family offering identical electrical characteristics.