ICL3244IB

Overview

The ICL3244IB is a dual-supply RS-232 transceiver manufactured by Intersil, designed for full-duplex data communication. It integrates three drivers and five receivers within a single package. The device operates with a supply voltage range of 3 V to 5.5 V and supports data rates up to 250 kb/s. Key electrical specifications include a propagation delay of 0.15 µs and an operating supply current of 1 mA. It features 15 kV ESD protection on the RS-232 lines and functions reliably across an industrial temperature range from -40 °C to +85 °C.

Feature Summary

• Integrates three independent drivers and five independent receivers for complex serial interface requirements.
• Provides robust electrostatic discharge (ESD) protection rated at 15 kV on all RS-232 lines.
• Includes a shutdown mode feature to significantly reduce power consumption during idle periods.

Applications

• Industrial control systems requiring reliable serial communication in electrically noisy environments.
• Embedded computing devices utilizing microcontrollers with RS-232 peripheral interfaces.
• Test and measurement equipment needing full-duplex data transmission capabilities.

Procurement Notes

Verify the specific suffix against official manufacturer documentation to confirm pinout compatibility and thermal characteristics. Ensure the component meets RoHS directives if required by the target assembly process. Cross-reference the datasheet revision date to validate parameter accuracy before finalizing procurement specifications.

Selection Notes

Select this component when the design requires multiple transmit and receive channels within a single integrated circuit. It is suitable for applications demanding high ESD immunity without external protection components. Consider the SSOP-28 package constraints regarding PCB space and thermal dissipation requirements for the final enclosure design.

Part Context

This part belongs to the ICL324x series of RS-232 transceivers, which are widely used for legacy serial port implementations. The IB suffix typically denotes an industrial temperature grade variant compared to commercial grades. It serves as a direct interface solution between TTL/CMOS logic levels and RS-232 voltage standards.

Replacement Considerations

The ICL3244EIAZ-T is a documented alternative within the same product family offering similar functional parameters. Verify that any substitute maintains the same driver and receiver count along with compatible package dimensions for board-level interchangeability.