MAX3243CPWR

Overview

The MAX3243CPWR is a low-power RS-232 transceiver manufactured by Texas Instruments, designed for multi-channel communication applications. It integrates three drivers and five receivers within a single TSSOP-28 package, supporting full-duplex data transmission at rates up to 250 kb/s. The device operates on a single power supply ranging from 3 V to 5.5 V, with a typical operating current of 1 mA. Key electrical specifications include an output drive current of 35 mA and an ESD protection rating of 15 kV. The component features a shutdown mode to minimize power consumption during idle periods and exhibits a propagation delay of 0.15 µs.

Feature Summary

• Integrates three independent drivers and five receivers for versatile multi-channel serial communication.
• Features a dedicated shutdown pin that significantly reduces power consumption when the device is inactive.
• Provides robust electrostatic discharge protection rated at 15 kV to enhance signal integrity in noisy environments.

Applications

• Industrial control systems requiring reliable serial data exchange
• Portable battery-powered equipment utilizing low-voltage operation
• Communication modules needing multiple RS-232 channels in compact form factors

Procurement Notes

Verify the specific suffix CPWR against official Texas Instruments documentation to confirm the tape-and-reel packaging configuration and commercial temperature range. Ensure compatibility with surface-mount assembly processes suitable for TSSOP-28 components. Cross-reference the manufacturer part number with authorized distributor catalogs to validate authenticity and traceability before procurement.

Selection Notes

Select this component when designing circuits that require three transmit and five receive channels within a limited board space. The 250 kb/s data rate suits standard asynchronous communication needs rather than high-speed interfaces. Consider the 3 V to 5.5 V supply range for flexibility in system power architecture. Evaluate the thermal performance within the commercial operating range if the application involves sustained high-duty-cycle transmissions.

Part Context

This part belongs to the MAX3243 family of multi-channel RS-232 line drivers and receivers. The series offers various package options including SOIC, SSOP, and TSSOP to accommodate different design constraints. Variants within the family differ primarily in operating temperature ranges and ESD protection levels, allowing engineers to choose based on environmental requirements while maintaining consistent functional characteristics.

Replacement Considerations

Direct replacements include other MAX3243 variants such as MAX3243IDW or MAX3243EIPWR, provided the package type and temperature range align with the design. Verify that substitute components maintain the same driver and receiver count along with compatible voltage specifications.