ICL3243CAZ

Overview

The ICL3243CAZ is an RS-232 transceiver integrated circuit manufactured by Renesas Electronics Corporation. It operates within a supply voltage range of 3 V to 5.5 V and supports data rates up to 250 kb/s. The device integrates three drivers and five receivers, providing full-duplex communication capabilities. It utilizes a 28-pin SSOP package for surface mount installation. Key electrical specifications include a maximum operating temperature of +70 °C and a minimum of 0 °C. The component features 15 kV ESD protection and draws approximately 1 mA during operation.

Feature Summary

• Integrates automatic powerdown functionality to minimize standby current consumption
• Provides robust electrostatic discharge protection rated at 15 kV via human body model
• Utilizes on-chip charge pumps requiring only four small external capacitors
• Ensures compatibility with single-ended receiver signals in mixed voltage systems

Applications

• Portable digital assistants (PDAs) and palmtop computers
• Notebook and laptop computer serial interfaces
• Industrial equipment requiring low-power RS-232 connectivity
• Battery-operated devices prioritizing extended standby life

Procurement Notes

Verify the specific suffix 'CAZ' against official Renesas documentation to confirm package type and temperature grade. Ensure compliance with RoHS directives and moisture sensitivity levels prior to assembly. Cross-reference ordering information with authorized distributors to validate authenticity and traceability.

Selection Notes

Select this component when designing systems requiring three transmit and five receive channels within a compact footprint. It is suitable for applications needing drop-in replacement for legacy MAX3243 designs while offering improved power efficiency. Consider the 28-lead SSOP package constraints for PCB layout and thermal management requirements.

Part Context

This part belongs to the ICL3243 series of low-power RS-232 transceivers. It serves as a modern alternative to older 5V-only interface chips, enabling operation in 3.3V and 5V mixed environments. The series is designed to reduce board space through efficient charge pump technology and minimal external component count.

Replacement Considerations

Publicly confirmed substitutes include the MAX3243EIDW and MAX3243EIDWR from Texas Instruments. These components offer pin-compatible upgrades with similar functional characteristics for direct integration into existing designs.