MAX223CWI

Overview

The MAX223CWI is a +5V-powered, multichannel RS-232 driver and receiver integrated circuit manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of 4.5V to 5.5V and supports data rates up to 120kb/s. The device features four drivers and five receivers in a 28-pin Wide SO package. It includes an integrated charge pump that eliminates the need for external bipolar ±12V supplies, enabling single-supply operation. The component provides a shutdown mode with a typical current consumption of 15mA during active operation.

Feature Summary

• Integrated charge pump circuitry enables single +5V supply operation without requiring external bipolar power sources.
• Built-in capacitors reduce printed circuit board space requirements compared to devices needing external components.
• Shutdown mode significantly reduces power consumption for energy-efficient system designs.

Applications

• Interface translation between TTL/CMOS logic levels and RS-232 standards
• Multidrop RS-232 communication networks
• Portable diagnostics equipment

Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to confirm exact package dimensions and temperature ratings. Confirm RoHS compliance status and lead-free soldering specifications prior to integration. Ensure the selected variant matches the required operating temperature range for the target environment.

Selection Notes

Select this component when designing systems requiring multiple RS-232 channels from a single +5V source. Consider the 28-pin Wide SO package constraints and verify that the internal charge pump can support the expected load currents on V+ and V- pins without violating output voltage swing specifications.

Part Context

This part belongs to the MAX220–MAX249 family of line drivers/receivers designed for EIA/TIA-232E and V.28/V.24 interfaces. The family offers various channel configurations and packages to address different PCB space and interface density requirements while maintaining compatibility with standard RS-232 signaling protocols.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify functional equivalence carefully if considering alternative manufacturers, specifically regarding pinout compatibility and charge pump performance characteristics.