MAX232ESE

Overview

The UMW MAX232ESE is a dual transmitter and receiver RS-232 interface integrated circuit designed for single +5 V power supply operation. It provides two drivers and two receivers that meet EIA/TIA-232E and CCITT V.28 specifications at data rates up to 120 kbps. The device incorporates an internal charge pump requiring four external capacitors, eliminating the need for ±10 V supplies. It features latchup-free construction and ±2 kV ESD protection on I/O pins. The component is housed in a 16-pin SOIC package with a 1.27 mm pin pitch.

Feature Summary

• Single +5 V power supply operation eliminates the requirement for negative voltage rails
• Internal charge pump circuitry reduces external component count to four small capacitors
• Latchup-free design ensures robust performance under varying electrical conditions

Applications

• Asynchronous communication controllers interfacing with serial-port connectors
• Portable battery-powered equipment requiring simplified power architectures
• Industrial control systems utilizing standard RS-232 protocols

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and temperature range. Ensure the component source matches the authorized distributor list to prevent counterfeit parts. Cross-reference the date code and lot number with the supplier's certificate of conformity. Confirm RoHS compliance status if required by local regulations before finalizing the purchase order.

Selection Notes

Select this component when designing systems limited to a single +5 V rail without available negative voltages. It is suitable for applications requiring full duplex communication at speeds up to 120 kbps. Consider the 16-pin SOIC footprint constraints during PCB layout. Evaluate the ±2 kV ESD rating against the environmental requirements of the target application.

Part Context

This part belongs to the MAX232 family of multi-channel RS-232 drivers and receivers manufactured by UMW (YouTai Semiconductor). These devices are engineered to bridge digital logic levels with RS-232 signal standards using minimal external components. The series supports various industrial and commercial communication interfaces while maintaining compatibility with standard TTL and CMOS logic families.

Replacement Considerations

Compatible substitutes include the ST232EC and UM232EESE. Verify pinout compatibility and electrical specifications such as data rate and ESD tolerance before substitution.