ICL232CBE

Overview

The ICL232CBE is a dual driver and dual receiver RS-232 line transceiver manufactured by Harris Corporation. It operates within a single +3V to +5.5V supply voltage range, ensuring compliance with EIA/TIA-232, V.24, and V.28 standards even at the lower 3.0V limit. The device integrates an efficient on-chip charge pump requiring only four small external capacitors for operation. It features Schmitt trigger inputs for noise immunity and provides ±15kV ESD protection on RS-232 pins. The component is housed in a 16-pin SSOP package (PDSO16) and supports data rates exceeding 250kbps under worst-case load conditions.

Feature Summary

• Integrated charge pump eliminates need for external inductors or multiple power supplies
• High electrostatic discharge protection on all RS-232 I/O pins
• Schmitt trigger receivers enhance noise rejection capabilities
• Low standby current consumption via automatic power-down functionality

Applications

• Battery-powered portable computers and laptops
• Personal Digital Assistants (PDAs)
• Handheld communication devices
• Modems and peripheral equipment

Procurement Notes

Verify the specific manufacturer origin as Harris Corporation, noting that Intersil later acquired relevant assets. Confirm the package type matches the SSOP16 specification. Ensure the part number suffix aligns with the required temperature range and RoHS compliance status. Cross-reference the datasheet version to confirm pinout compatibility with legacy designs.

Selection Notes

Select this component when designing systems requiring RS-232 connectivity with low power consumption constraints. It is suitable for replacing older 5V-only transceivers in mixed 3.3V and 5V environments. Consider the external capacitor requirements and board space limitations when finalizing the schematic layout.

Part Context

This device belongs to the ICL32xxE family of low-power RS-232 transceivers. It serves as a direct upgrade to earlier HIN232 and ICL232 models, offering improved power efficiency while maintaining pin compatibility. The series is designed to meet modern mobile computing demands for reduced energy usage without sacrificing signal integrity.

Replacement Considerations

The ICL3222E is documented as a low-power, pin-compatible upgrade for the MAX242E and SP312E. Verify if the ICL232CBE shares functional equivalence with these parts for direct substitution in existing designs.