MAX3233ECWP

Overview

The MAX3233ECWP is a dual RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated, housed in a 20-SOIC surface-mount package. It operates within a supply voltage range of 3.0V to 3.6V and supports data rates up to 250kbps with full-duplex communication. The device integrates internal charge-pump capacitors and features 15kV ESD protection on I/O pins. It includes an automatic shutdown function that reduces operating current to approximately 1µA when the interface is idle or disconnected. The component is rated for commercial temperature ranges from 0°C to +70°C.

Feature Summary

• Integrates internal charge-pump capacitors to eliminate external components
• Provides enhanced electrostatic discharge protection on all RS-232 I/O pins
• Features automatic shutdown mode to minimize power consumption during inactivity

Applications

• Portable computing devices such as subnotebooks and palmtops
• Battery-powered instrumentation requiring low standby current
• Industrial control systems utilizing RS-232 serial communication

Procurement Notes

Verify the specific suffix requirements for the MAX3233ECWP variant, as ordering codes may include additional tape-and-reel designators like TG36. Confirm availability status, as this component is listed as obsolete in several distributor databases. Ensure compliance with RoHS directives if required for the target assembly process.

Selection Notes

Select the MAX3233ECWP for designs requiring a single 3.3V supply rail with integrated capacitance. Compare against the MAX3233EEWP for extended industrial temperature specifications ranging from -40°C to +85°C. Evaluate the MAX3235E series if a 5V supply operation is necessary instead of the 3.3V constraint.

Part Context

This component belongs to the MAX3233E family of dual RS-232 transceivers designed for low-power applications. It shares functional similarities with the MAX3232 but utilizes a 20-pin SOIC package rather than a 16-pin configuration. The ECWP designation specifically indicates the commercial temperature grade and plastic small-outline package type.

Replacement Considerations

Public confirmed substitute part numbers include MAX3233EEWP for extended temperature operation and MAX3233ECPP for DIP packaging alternatives.