ICL3221ECAZ-T

Overview

The ICL3221ECAZ-T is a CMOS RS-232 line transceiver from the ICL32xxE series, manufactured by Renesas Electronics. It operates on a single power supply ranging from 3V to 5.5V and supports data rates up to 250kbps. The device features one driver and one receiver in a 16-pin SSOP package. Key electrical parameters include a maximum propagation delay of 0.15μs at specified load conditions, with high-level output current of 1.0mA and low-level output current of 1.6mA. It complies with EIA/TIA-232, V.28/V.24, and IEC61000-4-2 standards, functioning within an operating temperature range of -40°C to 125°C.

Feature Summary

• Integrates automatic power-down functionality that reduces standby current when the peripheral is off or cable is disconnected.
• Provides robust electrostatic discharge protection rated at 15kV for enhanced signal integrity.
• Utilizes efficient on-chip charge pumps requiring only small external capacitors to minimize board space.

Applications

• Portable digital assistants (PDAs) and mobile devices requiring low power consumption.
• Notebook and laptop computers utilizing mixed 3.3V and 5.0V logic systems.
• Industrial control systems operating under wide temperature ranges.

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging configuration during sourcing. Confirm RoHS compliance status through official manufacturer documentation rather than distributor summaries. Ensure the ordering part number matches the exact voltage and package variant required for the design.

Selection Notes

Select this component for designs requiring full compatibility with 3.3V, 5.0V, and mixed-voltage logic levels. Consider the ICL3221ECAZ-T where automatic power management is critical for battery-operated applications. Verify that the 250kbps data rate meets the system's communication speed requirements before finalizing the bill of materials.

Part Context

This device belongs to the ICL32xxE family of RS-232 transceivers designed for low-power applications. The 'E' suffix typically denotes extended industrial temperature ranges compared to commercial variants. The 'CAZ' designation identifies the specific plastic SSOP package and lead-free finish options available from Renesas.

Replacement Considerations

Direct substitutes within the same family include ICL3221EIAZ-T and ICL3221ECAZ. Cross-family replacements such as MAX3221 require verification of pinout compatibility and electrical parameter alignment. Always consult the latest datasheets to confirm functional equivalence before substitution.