MAX223EAI+

Overview

The MAX223EAI+ is a +5V-powered, multichannel RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It features four drivers and five receivers in a full-duplex configuration. The device operates on a single +5V supply with an operating current of 15 mA and supports data rates up to 120 kb/s. It utilizes integrated charge-pump circuitry to generate internal voltages, eliminating the need for external bipolar supplies. The component is housed in a 28-pin SSOP package and is designed for EIA/TIA-232E communications interfaces.

Feature Summary

• Integrated charge-pump circuitry enables single-supply operation from a +5V source without requiring external bipolar voltage rails.
• Includes shutdown mode functionality to significantly reduce power consumption during periods of inactivity.
• Provides multiple receiver outputs that remain active during shutdown states to support multidrop network applications.

Applications

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

Procurement Notes

Verify the specific suffix 'EAI+' against official manufacturer documentation to confirm the exact temperature range and RoHS compliance status. Ensure the ordering information matches the required package type and environmental rating before procurement.

Selection Notes

Select this component when designing systems that require multiple RS-232 channels within a single integrated circuit. It is suitable for applications where board space is limited and external charge-pump components are undesirable. Verify that the required number of drivers and receivers aligns with the system's interface needs.

Part Context

This part belongs to the MAX220–MAX249 family of line drivers and receivers. These devices are specifically engineered for EIA/TIA-232E and V.28/V.24 communications interfaces. The family offers various configurations to accommodate different channel counts and package constraints.

Replacement Considerations

Public confirmed substitute part numbers: HIN211EIAZ, HIN213EIAZ.

FAQ

Does the MAX223EAI+ require external capacitors for its charge pump?

No, the MAX223EAI+ includes integrated capacitors, which eliminates the need for external components typically required for charge-pump operation.

What is the purpose of the shutdown feature in this device?

The shutdown feature reduces the supply current to a minimum level (typically 15 µA) to save power when the device is not actively transmitting or receiving data.

Can the receivers operate while the device is in shutdown mode?

Yes, specific receivers can remain active in a low-power receive mode even when the device is placed in shutdown state, facilitating multidrop network functionality.