ICL3243CV-T

Overview

The ICL3243CV-T is a full-duplex RS-232 transceiver manufactured by Renesas Electronics Corporation, designed for low-power serial communication in portable systems. It integrates three drivers and five receivers within a single package, supporting data rates up to 250kbps while maintaining compliance with EIA/TIA-232 and V.28/V.24 standards at supply voltages as low as 3.0V. The device operates on a single power supply ranging from 3V to 5.5V and features an automatic power-down function that reduces standby current to approximately 1µA when the interface is idle or disconnected. Packaged in a 28-pin SSOP format, it utilizes efficient on-chip charge pumps requiring only four external 0.1µF capacitors, making it suitable for space-constrained applications such as PDAs and notebook computers.

Feature Summary

• Integrates three independent drivers and five receivers for complete RS-232 serial port functionality
• Features automatic power-down mode that significantly reduces standby current consumption during idle states
• Includes non-inverting always-active receivers to enable system wake-up capabilities from peripheral devices
• Utilizes internal charge pumps requiring minimal external capacitance for voltage conversion

Applications

• Portable computing devices including PDAs and Palmtops requiring low standby power
• Notebook and laptop computer serial interfaces where board space is limited
• Mixed voltage systems operating with 3.3V and 5.0V logic levels
• Battery-powered equipment necessitating extended operational life through efficient power management

Procurement Notes

Verify the specific suffix 'CV-T' against official Renesas documentation to confirm tape-and-reel packaging and commercial temperature range specifications. Ensure compatibility with existing PCB footprints for 28-SSOP packages. Cross-reference RoHS compliance status with current manufacturing notices, as component sourcing may involve legacy Intersil or IDT production lines now under Renesas. Confirm availability of updated datasheets reflecting any recent label or design changes.