ICL3222IVZ

Overview

The ICL3222IVZ is a dual RS-232 transceiver manufactured by Renesas Electronics, designed for low-power serial communication in portable systems. 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 features two drivers and two receivers with full-duplex capability. Key electrical specifications include a maximum operating temperature of +85 °C and a minimum of -40 °C. It incorporates ±15 kV ESD protection on all RS-232 pins and utilizes a TSSOP-20 surface-mount package.

Feature Summary

• Integrated automatic power-down circuitry that reduces standby current when the RS-232 cable is disconnected or peripheral devices are powered off.
• Built-in charge pump eliminates the need for external capacitors exceeding small low-value components, facilitating compact PCB layouts.
• Robust electrostatic discharge protection rated at ±15 kV on driver outputs and receiver inputs per IEC61000-4-2 standards.

Applications

• Personal Digital Assistants (PDAs) requiring low standby power consumption
• Laptops and notebook computers with limited battery capacity
• Portable handheld devices utilizing mixed 3.3 V and 5.0 V logic systems

Procurement Notes

Verify the specific suffix 'IVZ' against the manufacturer's official documentation to confirm the TSSOP-20 package variant and industrial temperature grade. Ensure compatibility with existing board space constraints due to the surface-mount form factor. Cross-reference the RoHS compliance status directly with the latest datasheet revision to meet environmental regulations.

Selection Notes

Select this component for designs prioritizing ultra-low quiescent current and automatic shutdown functionality over higher data throughput. It is suitable for applications where system power management is critical and external high-voltage capacitors must be minimized. Compare against the ICL3232 series if three drivers are required instead of two.

Part Context

This part belongs to the Intersil ICL32xE family of RS-232 transceivers, now produced under Renesas Electronics following corporate acquisitions. The ICL3222 specifically addresses the need for dual-channel communication in space-constrained mobile electronics while maintaining strict adherence to EIA/TIA-232 signal standards.

Replacement Considerations

The ICL3222EIAZ serves as a pin-compatible alternative featuring an SSOP-20 package instead of TSSOP-20. Verify mechanical footprint differences before substitution. Other members of the ICL32xxE series may offer different driver counts but share similar electrical characteristics.