MAX3081CSA+T

Overview

The MAX3081CSA+T is a full-duplex RS-422/RS-485 transceiver in an 8-SOIC package. It features one driver and one receiver with fail-safe circuitry guaranteeing a logic-high output when inputs are open or shorted. The device supports data rates up to 115kbps via slew-rate-limited drivers that minimize EMI. It operates on a single +5V supply (4.75V to 5.25V) with a typical quiescent current of 375µA. The receiver input impedance is 1/8-unit-load, allowing up to 256 transceivers on the bus.

Feature Summary

• Fail-safe circuitry ensures a logic-high receiver output when inputs are open or shorted.
• Slew-rate-limited drivers minimize electromagnetic interference and reduce reflections from improperly terminated cables.
• 1/8-unit-load receiver input impedance allows for high node density on the communication bus.

Applications

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

Procurement Notes

Verify the component matches the specific 'C' industrial temperature range variant and the '+T' tape-and-reel packaging configuration. Confirm the manufacturer designation as Analog Devices Inc./Maxim Integrated. Ensure the part number suffix corresponds to the required operating conditions and physical form factor for your assembly process.

Selection Notes

Select this model for full-duplex applications requiring error-free transmission at speeds up to 115kbps. The integrated slew-rate limiting makes it suitable for environments where electromagnetic interference must be minimized. Verify that the system operates within the specified 4.75V to 5.25V supply voltage range and requires the 8-SOIC surface-mount footprint.

Part Context

This component belongs to the MAX3080–MAX3089 family of high-speed transceivers designed for RS-485 and RS-422 standards. While other variants in the series offer higher data rates or half-duplex configurations, the MAX3081 specifically provides full-duplex operation with fixed slew-rate limiting for noise reduction.

Replacement Considerations

The MAX3081 is pin-compatible with industry-standard devices like the 75176. When substituting, ensure the replacement supports full-duplex operation and maintains the 115kbps slew-rate limitation if EMI mitigation is required.