MAX253ESA

Power Management - Specialized Overview

The MAX253ESA 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 5V or 3.3V DC supply, supporting output power levels up to 1W. The device features an operating supply current of 450µA and operates within a voltage range of 2.5V to 6V. It utilizes an SOIC-8 package and functions across a temperature range of -40°C to +85°C.

Power Management - Specialized Feature Summary

• Monolithic oscillator and power driver architecture
• Supports isolated RS-485 and RS-232 interface applications
• Low-current shutdown mode capability

Power Management - Specialized Applications

• Isolated RS-485 data interface power supply
• Isolated RS-232 data interface power supply
• Transformer driver for isolated communication systems

Power Management - Specialized Procurement Notes

Verify the specific suffix (e.g., ESA) against the manufacturer's official ordering guide to confirm the exact temperature range and package variant. Ensure compatibility with the required isolation voltage and transformer specifications for the target application design.

Power Management - Specialized Selection Notes

Select this component when designing isolated serial communication links requiring a dedicated transformer driver. Consider the 1W power limit and the need for external center-tapped transformers. Evaluate the low-power shutdown feature if system energy efficiency is critical.

Power Management - Specialized Part Context

The MAX253 belongs to Maxim Integrated's family of specialized power management ICs focused on isolated communication interfaces. It serves as a primary-side solution for generating isolated power in industrial and commercial data transmission environments.

Power Management - Specialized Replacement Considerations

Consult the manufacturer's official replacement matrix for verified substitutes. Generic cross-references may not match the specific oscillator frequency or drive characteristics required for isolated RS-485/RS-232 applications.