MAX3232CPWE4

Overview

The MAX3232CPWE4 is a dual driver/receiver RS-232 transceiver manufactured by Texas Instruments. It operates from a single 3.0 V to 5.5 V supply and includes internal charge pumps requiring only four external 0.1 µF capacitors. The device supports data rates up to 250 kbit/s with full-duplex communication. It features ±15 kV ESD protection on RS-232 lines and meets TIA/EIA-232-F standards. The component is housed in a 16-pin TSSOP package and functions within an operating temperature range of 0°C to +70°C.

Feature Summary

• Integrated charge pump enables operation from a single low-voltage power supply without external inductors.
• Provides robust electrostatic discharge protection exceeding ±15 kV on RS-232 bus terminals.
• Maintains compatibility with standard TTL and CMOS logic levels across the specified voltage range.

Applications

• Connecting microcontrollers or DSPs to serial ports on PCs and modems
• Industrial control systems requiring reliable serial communication interfaces
• Portable battery-powered equipment utilizing low-power RS-232 connectivity

Procurement Notes

Verify the specific suffix 'E4' against the manufacturer's official documentation to confirm material composition or lead-free status requirements. Ensure the selected package variant matches the PCB footprint design constraints. Cross-reference the temperature grade to confirm suitability for the intended operational environment before finalizing procurement orders.

Selection Notes

Select this component when a dual-channel RS-232 interface is required for 3V to 5V systems. Compare against higher-speed variants like the SN65C3232 if data rates exceed 250 kbit/s. Verify that the TSSOP-16 package dimensions fit the available board space and thermal management strategy for the target application.

Part Context

This part belongs to the MAX3232 family of low-power RS-232 transceivers. The series is widely used for serial communication in embedded systems. The CPWE4 designation indicates a specific commercial temperature grade and packaging configuration within the broader product line offered by Texas Instruments.

Replacement Considerations

The SN65C3232 offers higher speed capabilities while maintaining pin compatibility. The MAX3232IDWR provides an industrial temperature range alternative. Verify electrical specifications and package dimensions before substituting these components.