ICL3222EIB-T

Overview

The ICL3222EIB-T is a low-power RS-232 transceiver manufactured by Renesas Electronics Corporation. It operates within a supply voltage range of 3.0V to 5.5V and meets EIA/TIA-232 and V.28/V.24 specifications at VCC = 3.0V. The device integrates on-chip charge pumps requiring only four external 0.1µF capacitors. It provides ±15kV ESD protection on transmitter outputs and receiver inputs per IEC61000-4-2 standards. Manual and automatic power-down functions reduce standby current to 1µA. Data rates greater than 250kbps are guaranteed under worst-case load conditions.

Feature Summary

• Integrated ESD protection for RS-232 I/O pins up to ±15kV
• Low standby power consumption with manual and automatic power-down modes
• On-chip voltage converters minimizing external component count
• Compatible with 3.3V-only, mixed 3.3V/5.0V, and 5.0V-only systems

Applications

• Personal Digital Assistants (PDAs)
• Palmtops
• Notebook and laptop computers

Procurement Notes

Verify the specific suffix 'IB' against official Renesas documentation to confirm package type and tape-and-reel configuration. Ensure compatibility with existing board layouts designed for MAX3222E replacements. Confirm RoHS compliance status through the manufacturer's latest datasheet revision before procurement.

Selection Notes

Select this component for applications requiring low power consumption in portable devices. It serves as a drop-in replacement for MAX3222E and similar legacy parts. Verify that the system supports the required 0.1µF external capacitors for the internal charge pumps. Ensure the operating environment does not exceed the specified ESD protection limits.

Part Context

This part belongs to the Intersil ICL32xxE family of RS-232 transceivers, now produced by Renesas Electronics following their acquisition of Intersil. The family is characterized by low power operation and high ESD tolerance, targeting mobile computing applications where battery life and board space are critical constraints.

Replacement Considerations

Publicly documented pin-compatible replacements include MAX3222E, MAX3221E, and SP312E. Verify electrical parameter alignment, particularly regarding ESD ratings and data rate guarantees, when substituting these components.