ICL3310EIA

Overview

The Intersil ICL3310EIA is a low-power RS-232 transceiver designed for operation from a single +3V to +5.5V supply. It integrates five drivers and three receivers, providing full compliance with EIA/TIA-232 and V.28/V.24 specifications even at the minimum 3.0V input voltage. The device utilizes efficient on-chip charge pumps to generate the necessary internal voltages for RS-232 signaling without requiring external inductors or transformers. Key electrical parameters include a data rate capability of 120kbps, an operating supply current of typically 1mA, and a standby supply current reduced to 1µA through an automatic powerdown function triggered by idle bus conditions.

Feature Summary

• Automatic powerdown circuitry reduces standby current when no valid RS-232 signal is detected on receiver inputs
• Integrated charge pump eliminates the need for external inductors or transformers for voltage generation
• Provides ±15kV ESD protection on RS-232 pins to meet IEC61000-4-2 air gap standards
• Logic-level translation allows direct interfacing with microcontrollers operating at 3.3V or 5V

Applications

• Portable computers and notebook systems requiring low standby power consumption
• Personal Digital Assistants (PDAs) and palmtop devices
• ISDN terminal adaptors and peripheral interfaces
• Battery-powered equipment where extended battery life is critical

Procurement Notes

Verify the specific suffix against official Renesas/Intersil documentation to confirm package type and temperature range. Ensure the ordering code matches the required RoHS compliance status and lead-free finish specifications. Cross-reference the manufacturer's latest datasheet revision to confirm availability and any potential obsolescence notices prior to procurement.

Selection Notes

Select this component for applications requiring a single-supply RS-232 interface with minimal external passive components. It is suitable for designs needing automatic power management features to extend battery life in portable electronics. Verify that the 120kbps data rate meets system requirements and that the 15kV ESD protection level aligns with the target environment's electromagnetic compatibility standards.

Part Context

The ICL3310EIA belongs to the ICL32X7E family of low-power RS-232 transceivers manufactured by Intersil, now part of Renesas Electronics. This series was engineered to replace older legacy parts while offering improved power efficiency and integrated ESD protection. The device represents a transition point in Intersil's portfolio towards highly integrated, low-voltage interface solutions for mobile and consumer electronics markets.

Replacement Considerations

Direct replacements within the same family include the ICL3207EIA and ICL3217EIA, which share similar pinouts and functional characteristics. When substituting, verify that the alternative device maintains the same driver/receiver count and operates within the required voltage and temperature ranges specified by the original design.