ICL3232CA-T

Overview

The ICL3232CA-T is a triple line transceiver manufactured by Harris Corporation, designed for RS-232 communication. It operates within a supply voltage range of 3.0V to 5.5V and meets EIA/TIA-232 specifications at VCC = 3.0V. The device features three drivers and three receivers in a 28-terminal PDSO package. Key electrical parameters include a maximum data rate of 250kbps, a typical standby current of 1µA with powerdown, and 15kV ESD protection (Human Body Model). It utilizes on-chip charge pumps requiring only four external 0.1µF capacitors.

Feature Summary

• Integrated on-chip charge pumps eliminate the need for external inductors or transformers.
• Supports low-power operation with manual and automatic powerdown functions.
• Provides robust electrostatic discharge protection rated at 15kV via Human Body Model.
• Ensures compatibility with mixed 3.3V and 5.0V logic systems.

Applications

• Portable devices such as PDAs and palmtops requiring low power consumption.
• Notebook and laptop computers utilizing RS-232 serial interfaces.
• Industrial control systems operating with mixed voltage logic levels.

Procurement Notes

Verify the manufacturer designation, as Intersil was acquired by Renesas Electronics. Confirm that the 'T' suffix denotes tape-and-reel packaging if required for automated assembly. Ensure the component meets RoHS compliance standards relevant to your region. Cross-reference the datasheet version to confirm pinout compatibility with legacy MAX3232 designs.

Selection Notes

Select this component when a triple driver/receiver configuration is needed for RS-232 links. It is suitable for applications requiring operation down to 3.0V supply voltage. Consider the 28-pin SSOP package for space-constrained PCB layouts. Verify that the 250kbps data rate meets the system's timing requirements.

Part Context

This part belongs to the ICL32XX family of RS-232 transceivers. It serves as a low-power upgrade for older HIN232/ICL232 devices. The family is designed to be drop-in replacements for Maxim MAX3221, MAX3222, MAX3223, and MAX3241 series components. It supports both 3.3V-only and mixed 3.3V/5.0V system architectures.

Replacement Considerations

Publicly confirmed substitute part numbers include MAX3223, MAX3232, and SP3243. These components offer pin-compatible alternatives with similar electrical characteristics. Verify package dimensions and capacitor requirements before substitution.