MAX33045EASA+T

Overview

The MAX33045EASA+T is a half-duplex RS-485/RS-422 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It operates on a single supply voltage ranging from 3.0V to 5.5V, with a typical quiescent current of 6mA and a shutdown current of 1µA. The device supports data rates up to 500kbps and features ±40kV ESD protection per the Human Body Model. It utilizes an 8-pin SOIC package and functions within an operating temperature range of -40°C to +125°C.

Feature Summary

• Integrated high-voltage fault protection and electrostatic discharge tolerance for harsh industrial environments
• True fail-safe receiver guarantees a logic-high output when inputs are open or shorted
• Hot-swap capability prevents false transitions during board insertion into powered backplanes
• Thermal-shutdown circuitry protects against excessive power dissipation

Applications

• Programmable Controllers
• Factory Automation Equipment
• Motion Controllers
• Encoder Interfaces
• Telecommunication Equipment

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging rather than tube packaging. Confirm that the component meets RoHS standards as indicated by the '+' designation in the part number. Ensure compatibility with the required 8-pin SOIC footprint and validate thermal resistance specifications for the target PCB layout before finalizing procurement orders.

Selection Notes

Select this component for applications requiring robust ESD and fault protection on RS-485 or RS-422 networks. The 1/8-unit load specification allows for connecting up to 256 nodes on a single bus. Verify that the maximum data rate requirement does not exceed 500kbps, as higher speeds require the MAX33046 variant. Ensure the system operates within the specified 3.0V to 5.5V supply voltage range.

Part Context

This component belongs to the MAX33045/MAX33046 family of high-speed, half-duplex transceivers designed for multipoint communication systems. It serves as a rugged interface solution for digital data transmission over twisted-pair balanced lines, offering enhanced protection features compared to standard industry devices.

Replacement Considerations

The MAX33046EASA+T offers identical pinout and functionality but supports data rates up to 20Mbps instead of 500kbps.