ICL3225EIA

Overview

The Intersil ICL3225EIA is a full-duplex RS-232 transceiver designed for operation within a supply voltage range of 3.0V to 5.5V. It integrates two drivers and two receivers, supporting data rates up to 1Mbps. The device features enhanced automatic powerdown (E-DWN) functionality, reducing operating supply current to approximately 1mA during active use and significantly lowering standby consumption. It provides ±15kV electrostatic discharge (ESD) protection on the RS-232 lines, ensuring robustness in industrial environments. Packaged in a 20-pin SSOP format, it meets EIA/TIA-232 and V.24/V.28 specifications.

Feature Summary

• Enhanced Automatic Powerdown circuitry reduces standby power consumption when no valid signal is detected.
• Integrated charge pumps generate required RS-232 voltage levels from low single-supply voltages.
• High ESD protection rating ensures reliability against static discharge events on communication lines.

Applications

• Portable computing devices requiring low-power serial communication interfaces
• Industrial control systems with RS-232 connectivity needs
• Battery-operated equipment utilizing microcontroller-based serial links

Procurement Notes

Verify the specific suffix 'IA' against manufacturer documentation to confirm package type and temperature grade. Ensure compatibility with existing PCB footprint designs for SSOP-20 packages. Check for moisture sensitivity level requirements during storage and handling procedures before assembly.

Selection Notes

Select this component when dual-channel full-duplex RS-232 communication is required alongside low-power constraints. Compare against similar models like ICL3226EIA if only one driver/receiver pair is sufficient. Confirm that the 1Mbps data rate aligns with system timing requirements and that the 3V to 5.5V supply range matches the target platform's voltage rails.

Part Context

This part belongs to the ICL32XXE family of low-power RS-232 transceivers from Intersil, now part of Renesas Electronics. The 'E' designation typically indicates enhanced features such as improved ESD protection and lower power consumption compared to earlier generations. The ICL3225 variant specifically offers two drivers and two receivers, distinguishing it from single-driver counterparts in the same series.

Replacement Considerations

ICL3225EIAZ-T serves as a tape-and-reel alternative for automated assembly processes. Cross-reference with MAX3225EIA for pin-compatible options from other manufacturers, verifying electrical parameters match exactly.