MAX3232ESE

Overview

The UMW MAX3232ESE is a low-power, multichannel RS-232 line transceiver featuring two drivers and two receivers with a dual charge-pump circuit. It operates from a single 3.0V to 5.5V supply and meets TIA/EIA-232-F standards. The device supports data rates up to 250kbit/s with a maximum driver slew rate of 35V/μs. It requires four external capacitors (typically 0.1μF) for the charge pump. The component accepts 5.0V logic inputs while powered by a 3.3V supply and provides ESD protection exceeding ±8kV on RS-232 I/O pins. It is housed in an SOP-16 package.

Feature Summary

• Dual charge-pump circuit enables operation from a single power supply without requiring negative voltage rails.
• Provides electrical interface between asynchronous communication controllers and serial-port connectors.
• Accepts 5.0V logic inputs even when the system supply voltage is 3.3V.
• Includes enhanced electrostatic discharge protection on RS-232 input and output pins.

Applications

• Asynchronous communication controller interfaces
• Serial-port connector electrical interfacing
• TIA/EIA-232-F compliant systems

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and tape-and-reel quantities. Ensure the component version matches the required operating temperature range and electrical characteristics defined in the official datasheet before integration into production designs.

Selection Notes

Select this component for applications requiring full-duplex RS-232 communication with low power consumption. It is suitable for systems needing compatibility with 5.0V logic signals while operating on lower voltage supplies. Verify that the external capacitor values align with the recommended operating conditions for the specific supply voltage used in the design.

Part Context

This component belongs to the MAX3232 series of RS-232 transceivers manufactured by UMW. The series is designed for portable and handheld equipment where space and power efficiency are critical constraints. The MAX3232ESE variant specifically utilizes the SOP-16 surface-mount package format.

Replacement Considerations

Check for pin-compatible alternatives within the same family or from other manufacturers that meet TIA/EIA-232-F standards. Ensure substitute devices support the required 250kbit/s data rate and operate within the 3.0V to 5.5V supply range.