ICL3223EIA-T

Overview

The ICL3223EIA-T is a dual driver, dual receiver RS-232 transceiver manufactured by Intersil (Renesas). It operates on a single power supply ranging from 3.0 V to 5.5 V and supports full-duplex communication at data rates up to 250 kb/s. The device features an internal charge pump requiring only four small external capacitors. It provides ±15 kV electrostatic discharge protection on RS-232 pins per IEC61000-4-2 standards. The component is housed in a 20-pin SSOP package and includes automatic shutdown functionality to reduce standby current to 1 µA.

Feature Summary

• Integrated automatic shutdown circuit reduces standby power consumption significantly for battery-operated applications.
• Built-in charge pump generates required RS-232 voltage levels using minimal external capacitance.
• Robust input protection handles high-voltage electrostatic discharge events without damage.

Applications

• Portable computing devices such as laptops and notebooks
• Personal digital assistants and handheld peripherals
• Industrial equipment with serial communication interfaces

Procurement Notes

Verify the suffix 'T' indicates tape and reel packaging configuration. Confirm the 'IA' designation corresponds to the specific SSOP-20 package variant. Ensure compatibility with RoHS directives if required by the target assembly process. Cross-reference the manufacturer part number against Renesas Electronics documentation for accurate ordering specifications.

Selection Notes

Select this component when designing systems requiring low-power RS-232 connectivity within a 3V to 5.5V supply range. It serves as a direct replacement for legacy MAX222E and SP322E devices. Consider the 250 kb/s speed limit and SSOP-20 footprint constraints during PCB layout planning.

Part Context

This device belongs to the ICL32xxE family of low-power RS-232 transceivers. It shares architectural similarities with the ICL3222E but differs in package type and specific pinout configurations. The series is designed to replace older 5V-only transceivers while maintaining electrical compatibility with standard RS-232 protocols.

Replacement Considerations

Publicly confirmed substitutes include the MAX222E and SP322E. Verify pin-to-pin compatibility before substitution. Note that the ICL3223EIA-T uses an SSOP-20 package, which may differ physically from SOIC-16 alternatives in the same family.