MAX485CPA+

Drivers, Receivers, Transceivers Overview

The MAX485CPA+ is a low-power, half-duplex RS-485 and RS-422 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It integrates one driver and one receiver within an 8-pin PDIP package. The device operates from a single 5V supply (4.75V to 5.25V) and supports data transmission rates up to 2.5Mbps with unrestricted slew rates. Key electrical characteristics include a typical quiescent current of 300µA, a receiver input hysteresis of 70mV, and a differential threshold voltage of ±0.2V. It features thermal shutdown protection and short-circuit current limiting.

Drivers, Receivers, Transceivers Feature Summary

• Half-duplex communication capability for bidirectional data transmission on multipoint bus lines
• Integrated fail-safe receiver that guarantees a logic-high output when the input is open circuit
• Driver outputs protected against excessive power dissipation via thermal shutdown circuitry
• Short-circuit current limiting on the output stage provides immediate protection against faults

Drivers, Receivers, Transceivers Applications

• Low-Power RS-485 Transceivers
• Low-Power RS-422 Transceivers
• Industrial-Control Local Area Networks

Drivers, Receivers, Transceivers Procurement Notes

Verify the component authenticity through official manufacturer channels or authorized distributors. Confirm the specific package type matches the required PCB footprint. Ensure the operating temperature range aligns with the intended environmental conditions. Check for RoHS compliance status if required by regulatory standards. Validate pin configurations against the schematic design prior to integration.

Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring standard unit-load impedance supporting up to 32 transceivers on the bus. It is suitable for systems where unrestricted slew rates are acceptable for data rates up to 2.5Mbps. Consider alternatives like the MAX487 if higher node counts (128 devices) are necessary. Evaluate power consumption requirements as the quiescent current is approximately 300µA in active states.

Drivers, Receivers, Transceivers Part Context

The MAX485 series belongs to a family of low-power transceivers designed for RS-485 and RS-422 communications. This specific part number denotes the industrial/commercial grade variant in an 8-pin Plastic DIP package. It shares functional similarities with the MAX481 and MAX483 but differs in slew-rate limitations and shutdown capabilities found in other family members.

Drivers, Receivers, Transceivers Replacement Considerations

MAX485EPA+