ICL3244EIV

Overview

The Intersil ICL3244EIV is a low-power RS-232 transceiver designed for operation with supply voltages ranging from 3.0V to 5.5V. It integrates three drivers and five receivers, supporting data rates up to 250kbps while complying with EIA/TIA-232 and V.28/V.24 standards even at the minimum 3.0V supply. The device features an on-chip charge pump and provides ±15kV electrostatic discharge (ESD) protection on RS-232 pins according to IEC61000-4-2 specifications. It operates within a temperature range of -40°C to +85°C and utilizes a TSSOP-28 surface-mount package.

Feature Summary

• Integrates three independent drivers and five independent receivers for comprehensive serial port connectivity.
• Provides robust ±15kV ESD protection on all RS-232 input and output pins.
• Includes efficient on-chip charge pumps to generate required voltage levels from a single low-voltage supply.
• Supports automatic power-down functionality to minimize standby current consumption.

Applications

• Portable computers and laptop systems requiring full serial port interfaces.
• Personal digital assistants (PDAs) and palmtop devices with strict power constraints.
• Industrial control systems operating in mixed 3.3V and 5.0V environments.

Procurement Notes

Verify the specific suffix 'IV' against official Renesas or Intersil documentation to confirm the exact package type and temperature grade. Ensure compatibility with system voltage requirements before procurement. Cross-reference the manufacturer's latest datasheet to confirm active status and any potential obsolescence notices.

Selection Notes

Select this component when a design requires multiple transmit and receive channels within a single IC. It is suitable for applications needing high ESD immunity without external protection components. Consider the TSSOP-28 footprint constraints and the requirement for external capacitors for the charge pump circuit during layout.

Part Context

This part belongs to the ICL32xE family of low-power RS-232 transceivers. The family shares common architectural features such as the integrated charge pump and ESD protection mechanisms. Variations within the family typically differ by the number of drivers and receivers, allowing designers to choose the appropriate channel count for their specific interface needs.

Replacement Considerations

Direct replacements include other members of the ICL32xE series, such as the ICL3241E or ICL3243E, provided the driver/receiver counts match the application requirements. Verify pin-to-pin compatibility and electrical specifications before substitution.