ICL3225CA-T

Overview

The ICL3225CA-T is a low-power RS-232 transceiver manufactured by Renesas Electronics Corporation, belonging to the ICL3225E series. It features one driver and two receivers with full-duplex communication capabilities. The device operates on a single power supply ranging from 3 V to 5.5 V, supporting both 3.3 V and 5 V logic levels. It achieves data rates up to 1 Mbps while maintaining an operating supply current of only 1 mA. The component includes enhanced automatic powerdown functionality to minimize energy consumption during idle periods. It provides ±15 kV electrostatic discharge (ESD) protection on all RS-232 lines. The unit is housed in a 20-pin SSOP package and is rated for an industrial operating temperature range of -40°C to +85°C.

Feature Summary

• Enhanced automatic powerdown circuitry reduces power consumption when no signal activity is detected
• Integrated charge pump generates required RS-232 voltage swings from a single low-voltage supply
• Robust ±15 kV ESD protection ensures reliability across all RS-232 interface pins

Applications

• Industrial control systems requiring reliable serial communication
• Portable battery-powered equipment utilizing low-power microcontrollers
• Embedded systems interfacing with modems or barcode scanners

Procurement Notes

Verify the specific suffix 'CA' against official Renesas documentation to confirm the exact temperature grade and packaging variant. Ensure compatibility with existing PCB footprints for the 20-SSOP package. Confirm moisture sensitivity level handling requirements during assembly. Validate that the 1 mA quiescent current meets system power budgets. Check for any recent product change notices regarding labeling or pinout adjustments.

Selection Notes

Select this component when designing systems that require full-duplex RS-232 communication with strict power constraints. It is suitable for applications needing operation from a single 3 V to 5.5 V supply without external negative voltage generation. Consider this part for environments where ±15 kV ESD protection is critical for interface durability. Ensure the 1 Mbps data rate satisfies the bandwidth requirements of the connected peripherals.

Part Context

This transceiver is part of the ICL3225E family, which integrates Renesas' legacy Intersil RS-232 technology. The series is designed to replace older discrete solutions by combining drivers, receivers, and charge pumps into a single IC. The ICL3225CA-T specifically denotes the tape-and-reel version of the commercial/industrial grade device, facilitating automated surface-mount assembly processes.

Replacement Considerations

ICL3225EIAZ-T

FAQ

Does the ICL3225CA-T support 3.3 V logic interfaces?

Yes, the device operates with supply voltages between 3 V and 5.5 V, making it compatible with 3.3 V logic families.

What is the maximum data rate supported by this transceiver?

The ICL3225CA-T supports data rates up to 1 Mbps under standard operating conditions.

How does the automatic powerdown feature function?

The circuit automatically places the transmitter and receiver into a low-power state after a period of inactivity on the RS-232 lines, reducing the supply current to approximately 1 µA.