ICL232IBE

Overview

The ICL232IBE is a dual driver, dual receiver RS-232 line transceiver manufactured by Harris Corporation. It operates on a single +5V supply and includes an internal charge pump to generate the required ±10V signals for EIA/TIA-232 and V.28/V.24 compliance. The device features Schmitt trigger inputs for noise immunity and inverted output polarity. Packaged in a 16-pin SSOP (PDSO16), it supports data rates exceeding 250kbps under worst-case load conditions. The component is designed for low-power applications, offering reduced standby current compared to standard 5V RS-232 transceivers.

Feature Summary

• Internal charge pump eliminates external high-voltage components
• Schmitt trigger inputs provide enhanced noise rejection
• Low power consumption suitable for battery-operated systems
• Direct compatibility with EIA/TIA-232 standards

Applications

• Portable computers and laptops requiring serial communication
• Battery-powered handheld devices and PDAs
• Modems and peripheral equipment interfaces
• Industrial control systems with RS-232 ports

Procurement Notes

Verify the manufacturer origin as Harris Corporation or its successors, noting that the part may be obsolete. Confirm the package type matches the 16-pin SSOP specification. Check for RoHS compliance status, as original Harris parts may not meet current environmental regulations. Ensure the suffix 'IBE' corresponds to the correct temperature range and packaging variant before ordering.

Selection Notes

Select this component when a dual-channel RS-232 interface is needed for 5V systems with space constraints. It serves as a direct replacement for older HIN232E variants. Consider the ICL32xxE series if lower voltage operation (3.0V) or automatic shutdown features are required. Verify that the 250kbps data rate meets the application's speed requirements.

Part Context

The ICL232IBE belongs to the Intersil/Harris ICL232 family of RS-232 transceivers. This family was widely used in portable electronics during the transition from 5V to 3.3V logic levels. The ICL232 specifically provides two drivers and two receivers, making it suitable for basic full-duplex serial communication links in compact form factors.

Replacement Considerations

The ICL3232CBNZ is documented as a low-power upgrade and pin-compatible substitute for the HIN232/ICL232 series. Other compatible alternatives include the MAX232E and SP3232EE, though voltage ranges and feature sets like auto-shutdown should be verified against the specific design requirements.