ICL3207ECB

Overview

The Intersil ICL3207ECB is a low-power RS-232 transceiver designed for operation with supply voltages ranging from +3V to +5.5V. It integrates five drivers and three receivers, supporting data rates up to 250kb/s while meeting EIA/TIA-232 and V.28/V.24 specifications at the lower voltage limit. The device features an automatic powerdown function that reduces standby supply current to approximately 1µA when no receiver input activity is detected. It includes on-chip charge pumps requiring only external 0.1µF capacitors and provides ±15kV electrostatic discharge (ESD) protection on RS-232 I/O pins according to IEC61000-4-2 standards.

Feature Summary

• Automatic powerdown circuitry significantly reduces standby power consumption by detecting idle receiver states.
• Integrated charge pump design minimizes external component count by utilizing small 0.1µF capacitors.
• Robust ±15kV ESD protection ensures reliability in environments susceptible to electrostatic discharge events.

Applications

• ISDN Terminal Adaptors
• Portable computing devices such as PDAs and Palmtops
• Notebook and laptop computer peripheral interfaces

Procurement Notes

Verify manufacturing source carefully as Intersil operations were acquired by Renesas Electronics. Confirm RoHS compliance status via specific datasheet revision, as legacy versions may differ. Check moisture sensitivity level requirements for surface-mount assembly processes. Validate package marking codes against official ordering information to ensure authenticity.

Selection Notes

Select this component for applications requiring low-voltage operation down to 3V where standard 5V-only transceivers are unsuitable. Consider the automatic powerdown feature critical for battery-operated systems requiring extended standby life. Ensure system design accommodates the 250kb/s maximum data rate limitation compared to higher-speed alternatives.

Part Context

The ICL3207ECB belongs to the ICL32X7E family of low-power RS-232 transceivers. This series was engineered to replace older 5V-only devices like the MAX207E and HIN207E in modern 3V systems. The 'ECB' suffix typically denotes an industrial temperature range variant within the broader ICL3207 product line.

Replacement Considerations

Publicly confirmed direct substitutes include the ICL3217ECB and the HIN207EIBZ-T. These components share similar functional architectures and pinouts but may vary in specific electrical characteristics or packaging options. Verify compatibility before substitution.