ICL3223CA

Overview

The ICL3223CA is a triple line transceiver manufactured by Harris Corporation, designed for RS-232 communication applications. It integrates three drivers and three receivers within a single CMOS package. The device operates with a single power supply voltage ranging from 4.5 V to 5.5 V. It features an internal charge pump circuit that generates the necessary positive and negative voltages for RS-232 signaling without requiring external transformers or inductors. The component supports data rates up to 120 kbps and includes Schmitt trigger inputs on the receivers to filter noise. It is housed in a 28-pin Plastic Dual In-line Package (PDIP) or SSOP variant, suitable for industrial and commercial environments.

Feature Summary

• Integrates three independent drivers and three receivers for multi-channel serial communication
• Internal charge pump eliminates need for external inductors or transformers
• Schmitt trigger receiver inputs provide noise immunity and signal conditioning
• Single 5V power supply operation simplifies system design

Applications

• Industrial control systems requiring multiple RS-232 ports
• Point-of-sale terminals and cash registers
• Medical equipment with serial data logging capabilities
• Test and measurement instruments

Procurement Notes

Verify the manufacturer designation as Harris Corporation or its successor entities such as Intersil or Renesas, as corporate acquisitions have affected part lineage. Confirm the suffix 'CA' indicates the specific temperature range and packaging type required for your application. Ensure compatibility with existing PCB footprints for 28-pin packages. Request datasheets from authorized distributors to confirm current production status and RoHS compliance details.

Selection Notes

Select this component when three separate RS-232 channels are needed within a single integrated circuit. Compare against dual-driver alternatives like the ICL3223 if only two channels suffice, to optimize cost and board space. Consider the operating temperature range specified by the suffix; ensure it matches the environmental conditions of the deployment site. Verify that the 120 kbps data rate meets the throughput requirements of the connected peripherals.

Part Context

This device belongs to the broader family of RS-232 line transceivers produced by Harris Semiconductor. These components were widely adopted in the 1990s and early 2000s for standardizing serial communications before USB and Ethernet became prevalent. The ICL32xx series was known for its robustness and ease of use due to the integrated charge pump technology, reducing the complexity of power supply design for legacy serial interfaces.

Replacement Considerations

Direct pin-compatible replacements may include the ICL3223E or MAX3223E from Maxim Integrated. Verify electrical specifications such as drive strength and ESD protection levels before substitution. Check for availability of newer generations with enhanced ESD ratings if the original Harris parts are obsolete.