MAX223CAI

Overview

The MAX223CAI+ is a +5V-powered, multichannel RS-232 transceiver from the MAX220–MAX249 family. It integrates four drivers and five receivers in an SSOP-28 package. The device operates on a single +5V supply with a typical operating current of 15 mA. It supports data rates up to 120 kb/s and features full-duplex communication. The internal charge pump generates ±10V for RS-232 signaling without external bipolar supplies. It includes a shutdown mode with a typical current consumption of 50 µA at +25°C. The propagation delay is typically 40 µs.

Feature Summary

• Integrated charge-pump circuitry eliminates the need for external bipolar ±12V power supplies.
• Single +5V supply operation reduces system complexity and board space requirements.
• Shutdown mode significantly lowers power consumption for battery-operated applications.

Applications

• Interface translation between TTL/CMOS logic and RS-232 standards
• Multidrop RS-232 network connections
• Portable diagnostics equipment

Procurement Notes

Verify the component against official Analog Devices documentation to confirm pinout compatibility and electrical specifications. Ensure the SSOP-28 package matches the target PCB footprint. Confirm that the temperature range meets the operational environment requirements before finalizing procurement.

Selection Notes

Select this component when designing systems requiring multiple RS-232 channels within a compact form factor. It is suitable for applications where space constraints prevent the use of discrete voltage inverters. Verify that the 120 kb/s data rate aligns with the communication speed requirements of the connected peripherals.

Part Context

This part belongs to the MAX220–MAX249 family of line drivers and receivers designed for EIA/TIA-232E and V.28/V.24 interfaces. The family offers various channel configurations and packages to address different interface density needs while maintaining single-supply operation capabilities.

Replacement Considerations

Direct replacements within the same family include other MAX22x variants with matching driver/receiver counts. Verify package dimensions and pin assignments carefully when substituting with similar parts from the MAX232 or MAX245 series.