ICL3217ECB

Overview

The Intersil ICL3217ECB is a low-power RS-232 transceiver designed for operation with supply voltages ranging from 3.0 V to 5.5 V. It integrates one driver and three receivers, supporting data rates up to 250 kbps 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 1 µA when no valid RS-232 signal is detected on receiver inputs. It includes efficient on-chip charge pumps requiring only small external capacitors and provides ±15 kV electrostatic discharge (ESD) protection on RS-232 I/O pins.

Feature Summary

• Automatic powerdown circuitry significantly reduces standby current consumption without hardware modifications.
• Integrated charge pumps enable operation with minimal external capacitance requirements.
• Robust ±15 kV ESD protection on RS-232 interface pins ensures reliability in harsh environments.

Applications

• ISDN Terminal Adaptors
• Portable Digital Assistants (PDAs)
• Notebook and Laptop Computers

Procurement Notes

Verify the specific suffix 'CB' against official Renesas/Intersil documentation, as standard datasheets typically list 'EIB' or 'EIA'. Confirm package type and temperature range alignment with project requirements. Check for end-of-life status or obsolescence notices directly from the manufacturer before procurement planning.

Selection Notes

Select this component for applications requiring low-voltage operation down to 3.0 V with minimal power consumption. Ensure system design accommodates the single-driver and three-receiver configuration. Verify that the 250 kbps data rate meets communication speed requirements for the target application.

Part Context

The ICL3217E series belongs to Intersil's family of low-power RS-232 transceivers. These devices are engineered to replace older 5 V-only solutions in modern 3.3 V and 5 V mixed systems. The series emphasizes board space savings through small capacitor usage and low power profiles suitable for battery-operated portable electronics.

Replacement Considerations

The datasheet identifies the MAX207E, HIN207E, and HIN237E as 5 V lower-power replacements for which this device serves as a successor. Verify pin compatibility and electrical specifications when substituting these specific part numbers.