ICL3221EMVZ-T

Overview

The ICL3221EMVZ-T is a single RS-232 transmitter and receiver designed for 3.0V to 5.5V power supplies, complying with EIA/TIA-232 and V.28/V.24 standards. It features ±15kV ESD protection on RS-232 pins per IEC61000-4-2. The device includes an on-chip charge pump requiring only four 0.1µF capacitors. It guarantees data rates exceeding 250kbps at worst-case loads. Standby current reduces to 1µA via automatic or manual power-down modes. Operating temperature ranges from -40°C to +85°C.

Feature Summary

• Integrated on-chip voltage converters minimize external component count
• Automatic power-down functionality activates when cable is disconnected
• Receiver hysteresis enhances noise immunity in noisy environments

Applications

• Battery-powered handheld devices and PDAs
• Laptop and notebook computer serial ports
• Portable peripherals such as modems and printers

Procurement Notes

Verify the suffix 'T' indicates tape-and-reel packaging configuration. Confirm RoHS compliance status matches current manufacturing revisions. Validate that the specific lot date code aligns with project requirements. Ensure the supplier provides original manufacturer documentation for authenticity verification before finalizing acquisition.

Selection Notes

Select this component for systems requiring minimal standby power consumption during idle states. The automatic power-down feature eliminates the need for external control logic to manage sleep modes. Verify that the single driver and receiver configuration meets the interface requirements of the target application without needing additional channels.

Part Context

This part belongs to the Intersil ICL32xxE series of low-power RS-232 transceivers. The series targets portable electronics where battery life is critical. The device serves as a drop-in replacement for legacy MAX3221E components while offering improved power efficiency and robust electrostatic discharge protection characteristics.

Replacement Considerations

The datasheet identifies the MAX3221E as a direct drop-in replacement candidate. Verify pin compatibility and electrical specifications match before substitution. Ensure the alternative component supports the same 3.0V to 5.5V operating range and ESD protection levels.