ICL3207EIA

Overview

The ICL3207EIA is a CMOS line transceiver manufactured by Intersil, designed for RS-232 communication. It integrates three functional channels comprising five drivers and three receivers within a single package. The device operates on a single power supply ranging from 3V to 5.5V and supports data rates up to 250kbps. It complies with EIA/TIA-232, V.24, and V.28 specifications. The component utilizes Schmitt trigger inputs for noise immunity and features an automatic powerdown function that reduces standby current to approximately 1µA. It is housed in a 24-pin SSOP plastic package (MO-150-AG) and operates within a temperature range of -40°C to +85°C.

Feature Summary

• Integrates five drivers and three receivers for comprehensive RS-232 signal conversion
• Features automatic powerdown circuitry to minimize standby power consumption
• Includes Schmitt trigger inputs to enhance noise rejection capabilities
• Provides robust electrostatic discharge protection on all RS-232 pins

Applications

• ISDN Terminal Adaptors
• Personal Digital Assistants (PDAs)
• Notebook and laptop computers
• Portable peripheral devices

Procurement Notes

Verify the specific suffix 'EIA' against official Intersil or Rochester Electronics documentation to confirm the exact pinout and package dimensions. Ensure the component meets RoHS requirements if applicable, as lead-free variants may carry different suffixes. Confirm the manufacturer source, as Rochester Electronics often distributes legacy Intersil inventory. Validate the operating temperature range and voltage specifications against the target system design constraints before procurement.

Selection Notes

Select this component when designing systems requiring multiple RS-232 channels within a limited board space. It is suitable for applications demanding low power consumption during idle states due to its automatic powerdown feature. Verify compatibility with 3.3V and 5V logic levels. Consider the 24-pin SSOP package size relative to available PCB real estate. Ensure the required data rate does not exceed 250kbps.

Part Context

The ICL3207EIA belongs to the Intersil ICL32X7E family of low-power RS-232 transceivers. This series was engineered to replace older components like the MAX207E while offering improved power efficiency. The device is part of a broader portfolio of interface ICs produced by Intersil, which has since been acquired by Renesas Electronics. These components are widely used in portable electronics where battery life and physical footprint are critical design factors.

Replacement Considerations

Publicly confirmed direct substitutes include the MAX207E, HIN207E, and HIN237E. When replacing these parts, verify that the pin configurations are identical to ensure a drop-in replacement without PCB modifications. Check for any differences in capacitor requirements or ESD protection levels between the original and substitute components.