ICL3244ECAZ

Overview

The ICL3244ECAZ is a low-power RS-232 transceiver manufactured by Intersil, operating on a single power supply ranging from 3.0V to 5.5V. It features three drivers and five receivers, supporting full-duplex communication with data rates up to 250kbps. The device includes an automatic power-down mode that reduces standby current to approximately 1μA. It offers ±15kV ESD protection on all RS-232 lines and meets EIA/TIA-232 and V.28/V.24 specifications even at the minimum voltage of 3.0V. The component is housed in a 28-pin SSOP package.

Feature Summary

• Integrates three drivers and five receivers for versatile serial communication interfaces.
• Features automatic power-down mode to minimize current consumption during idle periods.
• Provides robust ±15kV electrostatic discharge protection across all signal lines.

Applications

• Portable battery-powered equipment requiring low current consumption
• Modems and portable instruments utilizing RS-232 protocols
• Industrial control systems needing reliable serial data transmission

Procurement Notes

Verify the specific suffix 'Z' indicates lead-free compliance and RoHS adherence as per manufacturer standards. Confirm the package type is SSOP-28 and ensure the operating temperature range aligns with commercial requirements. Cross-reference the datasheet for exact pinout configurations and recommended external capacitor values to guarantee signal integrity and proper functionality within the target circuit design.

Selection Notes

Select this component when a combination of multiple receivers and fewer drivers is required for RS-232 applications. It is suitable for designs prioritizing low standby power through automatic shutdown features. Ensure the system operates within the 3.0V to 5.5V range and requires data rates not exceeding 250kbps. Consider the 28-pin SSOP footprint constraints during PCB layout planning.

Part Context

This part belongs to the ICL32XXE series of low-power RS-232 transceivers designed for 3V to 5.5V operation. It complements other variants like the ICL3243 by offering a different driver-to-receiver ratio. The series maintains compatibility with standard RS-232 signaling levels while optimizing power efficiency for modern portable electronics.

Replacement Considerations

The ICL3244ECAZ-T is a tape-and-reel variant of the same functional device. Verify if the packaging format change affects handling procedures without altering electrical performance or pin configuration.

FAQ

Does the ICL3244ECAZ meet RS-232 specifications at 3.0V?

Yes, the device meets EIA/TIA-232 and V.28/V.24 specifications even when powered at the minimum voltage of 3.0V.

What is the typical current consumption in power-down mode?

The automatic power-down mode reduces the supply current to approximately 1μA.