ICL3244EIA

Overview

The ICL3244EIA is a low-power RS-232 transceiver manufactured by Intersil, operating within a supply voltage range of 3.0V to 5.5V. It integrates three drivers and five receivers, supporting full-duplex communication at data rates up to 250 kb/s. The device features an automatic powerdown function that reduces standby current to approximately 1 µA when no valid signal is detected on the receiver inputs. It provides ±15 kV electrostatic discharge (ESD) protection on all RS-232 pins, complying with IEC61000-4-2 standards. Packaged in a 28-pin SSOP, it operates reliably across an industrial temperature range from -40°C to +85°C.

Feature Summary

• Integrates three independent drivers and five independent receivers for versatile RS-232 connectivity.
• Features automatic powerdown circuitry to minimize standby power consumption during idle periods.
• Provides robust ±15 kV ESD protection on all RS-232 interface pins to enhance reliability.

Applications

• Portable computers and notebook systems requiring low standby power.
• Personal digital assistants (PDAs) and palmtop devices.
• ISDN terminal adaptors and peripheral interfaces.

Procurement Notes

Verify the specific suffix 'I' indicates the industrial temperature grade (-40°C to +85°C) and 'A' denotes the SSOP-28 package configuration. Confirm RoHS compliance status through official manufacturer documentation or authorized distributors, as environmental declarations may vary by production batch. Ensure moisture sensitivity level handling procedures are followed during assembly.

Selection Notes

Select this component when designing systems requiring multiple transmit and receive lines within a single IC footprint. It is suitable for applications where power efficiency is critical, particularly those utilizing 3.3V logic levels. Compare against similar models like the ICL3217E if fewer drivers are sufficient, or consider higher-speed variants if data rates exceed 250 kb/s.

Part Context

This part belongs to the Intersil ICL32XXE family of RS-232 transceivers designed for low-voltage operation. These devices serve as direct replacements for legacy 5V-only RS-232 chips, enabling migration to modern 3.3V embedded systems while maintaining compatibility with standard RS-232 protocols and mechanical footprints.

Replacement Considerations

The ICL3244EIA serves as a functional equivalent to the MAX3244 series from Maxim Integrated. Designers should verify pinout compatibility and capacitor requirements when substituting these parts, although electrical characteristics and package dimensions are generally aligned for direct replacement in most designs.