ICL3223IAZ

Overview

The ICL3223IAZ is a triple line transceiver manufactured by Renesas Electronics Corporation, designed for RS-232 communication applications. It integrates three drivers and three receivers within a single package, supporting data rates up to 120 kbps. The device operates from a single 3 V to 5.5 V power supply and includes internal charge pumps that generate the required positive and negative voltages for RS-232 signaling without external components. It features Schmitt-trigger inputs on the receivers for noise filtering and offers ESD protection exceeding ±15 kV according to the Human Body Model. The component is available in a 28-pin SSOP package and complies with RoHS standards.

Feature Summary

• Integrates three independent drivers and three receivers for full RS-232 triplex communication capability
• Internal charge pump circuitry eliminates the need for external capacitors or dual voltage supplies
• Schmitt-trigger receiver inputs provide enhanced noise immunity and signal integrity
• Built-in electrostatic discharge protection safeguards against human body model events

Applications

• Industrial control systems requiring serial communication interfaces
• Point-of-sale terminals and barcode scanners
• Modems and portable instrumentation equipment

Procurement Notes

Verify the specific suffix 'IAZ' corresponds to the lead-free and RoHS-compliant variant when sourcing. Confirm the package type matches the design requirements, as variations may exist across different manufacturing runs. Ensure the supplier provides valid documentation confirming compliance with current environmental regulations before finalizing procurement orders.

Selection Notes

Select this component when a triple channel RS-232 interface is required within a compact footprint. It is suitable for designs operating on a single 3 V to 5.5 V supply rail. Consider the 120 kbps data rate limit and the 28-pin SSOP package dimensions during PCB layout planning. Verify thermal performance requirements for the intended operating temperature range of 0°C to 70°C.

Part Context

This part belongs to the ICL32xx series of RS-232 transceivers produced by Intersil, now part of Renesas Electronics. The series is characterized by low power consumption and high reliability for serial communication tasks. The ICL3223 variant specifically provides three channels, distinguishing it from dual-channel models like the ICL3221 or single-channel versions. It serves as a standard interface solution for legacy serial protocols in modern embedded systems.

Replacement Considerations

Direct substitutes include the ICL3223IE (industrial temperature range) and ICL3223IP (plastic DIP package). Cross-brand equivalents such as the MAX3223EIA from Maxim Integrated offer similar functionality but require verification of pin compatibility and electrical specifications.