ICL3217IBZ

Overview

The ICL3217IBZ is a low-power RS-232 transceiver manufactured by Renesas Electronics Corporation, belonging to the ICL3217E series. It operates within a supply voltage range of 3 V to 5.5 V and supports data rates up to 500 kb/s. The device integrates one driver and three receivers in a 24-pin SOIC package. Key electrical specifications include a maximum operating temperature of +85 °C and a minimum of -40 °C. It features ESD protection on RS-232 pins and draws approximately 1 mA during operation.

Feature Summary

• Integrated automatic powerdown circuitry that reduces standby current to 1 µA when no valid RS-232 signal is detected.
• Provides ±15 kV electrostatic discharge (ESD) protection on RS-232 input and output pins.
• Utilizes efficient on-chip charge pumps requiring only small external capacitors for operation.

Applications

• ISDN Terminal Adaptors
• Portable computers such as PDAs and Palmtops
• Notebook and laptop computer peripherals

Procurement Notes

Verify the specific suffix 'IBZ' against official Renesas documentation to confirm lead-free status and RoHS compliance details. Confirm package dimensions match the 24-SOIC specification. Check for any export restrictions or lifecycle notices, as this component may be subject to limited availability or discontinuation status.

Selection Notes

Select this component for designs requiring low power consumption in portable applications. Ensure the system voltage falls between 3 V and 5.5 V. Verify that the required interface matches the single-driver and triple-receiver configuration. Consider the 24-SOIC footprint constraints during PCB layout.

Part Context

This part is part of the Intersil/Renesas ICL32XXE family of 3V RS-232 transceivers. It serves as a lower power alternative to older 5V-only devices like the MAX207E. The 'E' designation typically indicates enhanced ESD protection and low-power features compared to standard variants.

Replacement Considerations

Publicly confirmed substitutes include the ISL32173EIBZ for RS-422/RS-485 applications, though protocol differences apply. Direct pin-to-pin replacements within the same RS-232 family should be verified via official cross-reference lists.