ICL3217IB

Overview

The Intersil ICL3217IB is a low-power RS-232 transceiver designed for operation with supply voltages ranging from 3V to 5.5V. It integrates one driver and three receivers, supporting data rates up to 500 kb/s. The device operates within a temperature range of -40°C to +85°C and features ESD protection on RS-232 I/O pins rated at ±15kV according to the IEC61000-4-2 standard. It utilizes an automatic powerdown circuit that reduces standby supply current to approximately 1 µA when no valid RS-232 signal is detected. The component is housed in a SOIC-24 surface-mount package.

Feature Summary

• Automatic powerdown function significantly reduces standby power consumption by entering a low-current state when idle.
• Integrated charge pumps enable reliable RS-232 communication using small external capacitors, minimizing board space requirements.
• Robust electrostatic discharge (ESD) protection ensures reliability against human body and machine model events.

Applications

• ISDN Terminal Adaptors
• Personal Digital Assistants (PDAs)
• Notebook and laptop computers

Procurement Notes

Verify the specific suffix 'IB' against official Renesas/Intersil documentation to confirm package type and temperature grade. Confirm compliance with export restrictions if applicable. Check for RoHS status as availability may vary by manufacturing date. Ensure the source document explicitly identifies the manufacturer as Intersil or Renesas Electronics.

Selection Notes

Select this component for applications requiring low power consumption in portable devices. Verify that the system voltage falls within the 3V to 5.5V operating range. Ensure the design accommodates the required external capacitors for the internal charge pumps. Confirm that the SOIC-24 package fits the available PCB footprint.

Part Context

The ICL3217IB belongs to the ICL32X7E family of RS-232 transceivers. This series is characterized by its ability to operate at lower supply voltages compared to traditional 5V-only devices. It serves as a low-power alternative to older industry-standard parts, targeting mobile and battery-operated electronics where energy efficiency is critical.

Replacement Considerations

Publicly documented equivalents include the MAX207E, HIN207E, and HIN237E. Verify pin compatibility and electrical specifications before substitution. Ensure the replacement part supports the required 3V operation and ESD protection levels.