ICL3207EIB

Overview

The ICL3207EIB is an RS-232 transceiver manufactured by Intersil, now part of Renesas Electronics. It operates within a supply voltage range of 3 V to 5.5 V and supports data rates up to 500 kb/s. The device integrates one driver and three receivers in a single package. It features low power consumption with a typical operating current of 1 mA. The component provides electrostatic discharge (ESD) protection for RS-232 I/O pins. It is housed in a 24-pin SOIC wide surface-mount package and functions across an industrial temperature range from -40 °C to +85 °C.

Feature Summary

• Integrated charge pump circuitry enables operation from a single 3V to 5.5V power supply without requiring external negative voltage generation.
• Provides robust ESD protection on RS-232 I/O pins to withstand high-voltage static discharge events.
• Complies with EIA/TIA-232 and V.28/V.24 interface specifications for reliable serial communication.
• Low standby power consumption achieved through automatic powerdown functionality when no valid signal is detected.

Applications

• ISDN Terminal Adaptors
• Personal Digital Assistants (PDAs)
• Notebook and laptop computers
• Peripheral devices requiring low-power serial interfaces

Procurement Notes

Verify the specific suffix 'EIB' against official Renesas or Intersil documentation to confirm the exact package type and temperature grade. Confirm RoHS compliance status as manufacturing sources may vary between original Intersil and Rochester Electronics stock. Check for moisture sensitivity level requirements during storage and handling prior to assembly.

Selection Notes

Select this component for designs requiring a single-supply RS-232 solution with integrated charge pumps. Ensure the application fits within the 500 kb/s data rate limit and the 3V to 5.5V voltage window. Verify that the 24-pin SOIC footprint matches the PCB layout constraints. Consider the automatic powerdown feature if battery life is a critical design parameter.

Part Context

The ICL3207EIB belongs to the ICL32X7E family of low-power RS-232 transceivers. This series was designed to replace older 5V-only devices like the MAX207E in modern 3.3V systems. The 'E' suffix typically denotes enhanced ESD protection and lower power characteristics compared to standard variants. Intersil was acquired by Renesas Electronics, which continues to support these legacy interface products.

Replacement Considerations

Publicly confirmed direct substitutes include the MAX207E and HIN207E, though these are typically 5V-only devices. For 3V-compatible replacements within the same family, consider the ICL3217EIB or ICL3221EIB. Verify pinout compatibility and electrical parameters before swapping components in existing designs.