MAX483EPA

Overview

The MAX483EPA 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 in an 8-pin Plastic DIP package. The device supports data rates up to 250kbps with slew-rate-limited drivers to minimize EMI. It operates from a single 5V supply (4.75V to 5.25V) and features a low-current shutdown mode consuming only 0.1µA. The receiver includes a fail-safe feature guaranteeing a logic-high output if the input is open circuit.

Feature Summary

• Slew-rate-limited drivers reduce electromagnetic interference and reflections on improperly terminated cables.
• Low-power operation with a dedicated shutdown mode for minimal standby current consumption.
• Fail-safe receiver design ensures a defined high logic state during open-circuit conditions.

Applications

• Industrial-control local area networks
• EMI-sensitive communication applications
• Low-power RS-485 and RS-422 systems

Procurement Notes

Verify the specific suffix 'PA' corresponds to the 8-pin Plastic DIP package variant when sourcing. Confirm the temperature grade matches the required operational range, as the 'E' suffix indicates extended industrial specifications. Ensure compatibility with standard 5V logic levels and check for RoHS compliance status associated with the ordering code.

Selection Notes

Select this component for half-duplex applications requiring reduced EMI through slew-rate limiting. It is suitable for systems where power conservation is critical due to the available shutdown mode. Compare against non-slew-rate variants like the MAX485 if higher data rates up to 2.5Mbps are necessary instead of the 250kbps limit.

Part Context

This part belongs to the MAX48x family of low-power transceivers designed for RS-485 and RS-422 communications. It shares functional similarities with the MAX481 and MAX485 but distinguishes itself through its limited slew rate for better signal integrity over long or poorly terminated lines.

Replacement Considerations

MAX485EEPA+ offers similar functionality but lacks slew-rate limiting and supports higher data rates. MAX487EPA provides quarter-unit-load capability for larger bus networks while maintaining half-duplex operation and slew-rate limiting.