MAX3083CSD+

Overview

The MAX3083CSD+ is a full-duplex RS-485/RS-422 transceiver featuring fail-safe circuitry and a maximum data rate of 500kbps. It operates on a single +5V supply with a typical quiescent current of 375µA. The device incorporates a 1/8-unit-load receiver input impedance, supporting up to 256 transceivers on the bus. It utilizes a 14-pin SO package and functions within an operating temperature range of 0°C to +70°C.

Feature Summary

• Fail-safe circuitry guarantees a logic-high receiver output when inputs are open or shorted.
• Slew-rate-limited driver minimizes electromagnetic interference and reflections.
• High input impedance allows for extensive network expansion.

Applications

• RS-422/RS-485 communications
• Industrial-control local area networks

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and temperature grade. Ensure compatibility with system voltage requirements and interface standards before integration.

Selection Notes

Select this component for applications requiring full-duplex communication at speeds up to 500kbps. It is suitable for environments where reduced EMI is necessary due to its slew-rate limiting features.

Part Context

This part belongs to the MAX3080–MAX3089 family of high-speed transceivers designed for RS-485/RS-422 communication. The series offers various speed options and duplex configurations to suit different industrial networking needs.

Replacement Considerations

The datasheet indicates pin-compatibility with industry-standard parts like the 75180. Verify functional equivalence regarding electrical characteristics and pin assignments before substitution.

FAQ

What is the fail-safe threshold for the receiver?

The receiver guarantees a logic-high output if the differential input voltage (A-B) is greater than or equal to -50mV, and a logic-low if less than or equal to -200mV.

How many transceivers can be connected to the bus?

Due to the 1/8-unit-load receiver input impedance, up to 256 transceivers can be connected in parallel on one communication line.