MAX253CSA

Power Management - Specialized Overview

The MAX253CSA is a monolithic oscillator and power driver designed to provide isolated power for RS-485 or RS-232 data interfaces. It drives a center-tapped transformer primary from a 3.3V or 5V DC supply. The device operates with a supply voltage range of 2.5V to 6V and draws 450µA of operating current. It features a non-inverting configuration with a single driver output capable of sourcing 1A. The component is housed in an SOIC-8 surface-mount package and functions within a temperature range of -40°C to +85°C.

Power Management - Specialized Feature Summary

• Provides isolated power for RS-485 or RS-232 interfaces via transformer drive
• Integrates oscillator and power driver in a single monolithic device
• Supports both 3.3V and 5V DC power supply inputs

Power Management - Specialized Applications

• Isolated RS-485 communication interface power supply
• Isolated RS-232 communication interface power supply
• Primary-side transformer driving for isolated data links

Power Management - Specialized Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm package type and temperature rating. Ensure the component matches the required isolation specifications for the target interface. Cross-reference the manufacturer part number with authorized distributors to confirm availability and authenticity before procurement.

Power Management - Specialized Selection Notes

Select this component when designing isolated serial communication circuits requiring integrated oscillator and driver functionality. It is suitable for applications needing low quiescent current and support for standard logic supply voltages. Consider the SOIC-8 package constraints and thermal dissipation requirements for the specific PCB layout.

Power Management - Specialized Part Context

The MAX253 belongs to the Maxim Integrated family of specialized gate drivers and transformer drivers. It is distinct from general-purpose half-bridge drivers by its integrated oscillator function tailored for isolated data bus power delivery. This integration simplifies the design of isolated serial communication nodes compared to discrete solutions.

Power Management - Specialized Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.