ICL3225CPZ

Overview

The ICL3225CPZ is a dual transmitter and dual receiver RS-232 interface transceiver manufactured by Intersil, now part of Renesas Electronics. Designed for operation with supply voltages ranging from 3V to 5.5V, this component supports data rates up to 1 Mbps while maintaining low power consumption with an operating supply current of approximately 1 mA. It features enhanced automatic powerdown functionality to minimize energy usage during idle periods. The device provides robust protection against electrostatic discharge, rated at ±15 kV according to the Human Body Model. Packaged in a 20-pin PDIP format, it complies with EIA/TIA-232 and V.28/V.24 standards for reliable serial communication.

Feature Summary

• Enhanced automatic powerdown circuitry reduces power consumption when the RS-232 transceiver is not actively transmitting data.
• Integrated charge pump generates required positive and negative voltage supplies directly from a single 3V to 5.5V source.
• High electrostatic discharge tolerance ensures signal integrity and device survival in environments prone to static events.

Applications

• Industrial control systems requiring reliable serial communication interfaces
• Portable battery-powered equipment utilizing low-voltage logic levels
• Modem and telecommunications terminal equipment

Procurement Notes

Verify the specific suffix 'CPZ' against official Renesas documentation to confirm package type and lead-free status. Ensure compatibility with existing PCB footprints for 20-pin PDIP assemblies. Cross-reference manufacturer lot codes for authenticity. Confirm environmental compliance details such as RoHS status through current datasheets before finalizing procurement orders.

Selection Notes

Select this component for applications requiring full-duplex RS-232 communication with moderate data rates up to 1 Mbps. It is suitable for designs needing low quiescent current and high ESD immunity without external voltage generation components. Consider alternative packages if surface-mount technology is preferred over through-hole mounting.

Part Context

This device belongs to the ICL32XXE family of RS-232 transceivers known for their low-power operation and integrated charge pumps. The 'E' designation typically indicates enhanced features like improved ESD protection and lower power modes compared to earlier generations. Intersil was acquired by Renesas Electronics, which continues to support these legacy interface products.

Replacement Considerations

Direct pin-compatible alternatives within the same family include the ICL3225EIAZ for surface-mount applications. Verify electrical specifications match exactly, particularly data rate limits and supply voltage ranges, when substituting with other RS-232 transceivers from different manufacturers.