MAX3075EEPA

Overview

The MAX3075EEPA is a half-duplex RS-485/RS-422 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It operates at a fixed supply voltage of 3.3 V with a maximum data rate of 500 kb/s. The device features 1 driver and 1 receiver, housed in an 8-pin PDIP package for through-hole mounting. It supports an operating temperature range from -40°C to +125°C. Key electrical specifications include a quiescent current of 1.5 mA, power dissipation of 727 mW, and 15 kV ESD protection on the bus pins.

Feature Summary

• Integrated 15 kV ESD protection on the bus interface pins to safeguard against electrostatic discharge events.
• Fail-safe receiver design ensures a logical high state at the receiver output when the differential input is open or disconnected.
• Hot-swap capability allows connection to a live bus without generating glitches that could disrupt communication.

Applications

• Industrial automation systems requiring robust serial communication over long distances.
• Building automation networks utilizing RS-485 multi-drop configurations.
• Metering applications such as electricity and gas meters needing reliable half-duplex data transfer.

Procurement Notes

Verify the specific suffix 'E' indicates the extended industrial temperature range (-40°C to +125°C) compared to commercial variants. Confirm the 'PA+' designation corresponds to the lead-free PDIP-8 package. Cross-reference the manufacturer part number with official distributor catalogs to ensure authenticity and check for obsolescence status before procurement.

Selection Notes

Select this component when a 3.3 V supply is required alongside high-temperature operation up to 125°C. The 500 kb/s data rate suits moderate-speed applications where lower power consumption is prioritized over high bandwidth. Ensure the system requires half-duplex communication and benefits from integrated hot-swap protection during bus insertion.

Part Context

This device belongs to the MAX307x family of low-power RS-485/RS-422 transceivers. It shares functional similarities with the MAX3072EEPA but offers an extended temperature range and higher data rate capabilities. The PDIP-8 package provides a standard footprint for legacy through-hole PCB designs requiring robust industrial-grade interface solutions.

Replacement Considerations

The MAX3072EEPA serves as a related alternative within the same product family, offering similar functionality but potentially differing in data rate or temperature specifications. Verify pin compatibility and electrical parameters before substitution.