MAX253CSA+T

Power Management - Specialized Overview

The MAX253CSA+T is a monolithic oscillator and power driver designed to provide isolated power for isolated RS-485 or RS-232 data interfaces. It drives a center-tapped transformer primary from a 5V or 3.3V DC supply. The device operates with a supply voltage range of 2.5V to 6V and draws an operating supply current of 450µA. It features a non-inverting configuration with one driver output capable of delivering 1A. The component is housed in an SOIC-8 package and functions within a temperature range of 0°C to +70°C, with a maximum power dissipation of 471mW.

Power Management - Specialized Feature Summary

• Provides isolated power for RS-485 and RS-232 interfaces via transformer drive
• Integrates oscillator and H-bridge driver for primary-side excitation
• Operates directly from standard 3.3V or 5V logic supplies

Power Management - Specialized Applications

• Isolated RS-485 interface power generation
• Isolated RS-232 interface power generation
• Primary-side transformer driving for galvanic isolation barriers

Power Management - Specialized Procurement Notes

Verify the specific suffix 'CSA' corresponds to the SOIC-8 package and commercial temperature grade (0°C to +70°C) required for your design. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the ordering part number matches the exact tape-and-reel or tube quantity specifications defined in the latest datasheet revision.

Power Management - Specialized Selection Notes

Select this component when a compact solution is needed to generate isolated power for serial communication transceivers without external discrete oscillators. It is suitable for designs requiring low quiescent current and direct compatibility with standard logic voltage levels. Consider thermal dissipation limits if operating near maximum ambient temperatures or load conditions.

Power Management - Specialized Part Context

This part belongs to the MAX253 family of transformer drivers manufactured by Analog Devices Inc./Maxim Integrated. These devices are specialized PMIC components intended to simplify the design of isolated digital communication links by combining the drive circuitry and oscillator into a single integrated circuit.

Power Management - Specialized Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.