ICL3244EIA-T

Overview

The ICL3244EIA-T is a low-power RS-232 transceiver manufactured by Renesas Electronics Corporation, operating within a supply voltage range of 3.0 V to 5.5 V. It integrates three drivers and five receivers, supporting full-duplex communication with a guaranteed data rate of 250 kb/s under worst-case load conditions. The device features ±15 kV electrostatic discharge (ESD) protection on both transmitter outputs and receiver inputs, compliant with IEC61000-4-2 standards. It operates in an industrial temperature range from -40°C to +85°C and consumes a typical quiescent current of 1 mA. The component is housed in a 28-pin SSOP package and includes shutdown functionality for power management.

Feature Summary

• Integrated charge pump enables operation from a single 3.0 V to 5.5 V supply without external voltage conversion components.
• Provides robust ±15 kV ESD protection on RS-232 pins to safeguard against electrostatic discharge events.
• Includes manual shutdown mode to reduce standby power consumption to microampere levels.

Applications

• Portable computers and laptops requiring full serial port connectivity
• Personal digital assistants (PDAs) and handheld devices
• Industrial control systems operating in extended temperature environments

Procurement Notes

Verify the specific suffix 'T' indicates reel packaging when sourcing. Confirm RoHS compliance status and moisture sensitivity level (MSL 2) requirements for surface mount assembly processes. Ensure the supplier provides official datasheets matching the Renesas/Intersil part number to validate electrical specifications and pinout configurations before integration.

Selection Notes

Select this component for designs requiring three independent transmit channels and five receive channels within a compact footprint. It is suitable for mixed-voltage systems supporting both 3.3 V and 5.0 V logic levels. Consider the 250 kb/s speed limit and 28-SSOP package dimensions during PCB layout planning.

Part Context

This part belongs to the ICL324xE series of RS-232 transceivers designed for low-power applications. The series shares architectural similarities with other models like the ICL3241E and ICL3245E but differs in channel configuration and specific feature sets such as automatic powerdown capabilities found in other variants.

Replacement Considerations

Direct substitutes include ICL3244EIAZ for tube packaging or ICL3244EIVZ for TSSOP packages. Verify pin compatibility and electrical parameters against the original design requirements when cross-referencing with other RS-232 transceivers from different manufacturers.