ICL3244ECB-T

Overview

The Intersil ICL3244ECB-T is a low-power RS-232 transceiver designed for operation with supply voltages ranging from 3 V to 5.5 V. 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 mode that reduces standby current to approximately 1 µA when the bus is idle. It includes on-chip charge pumps requiring only four small external capacitors. The component provides enhanced ESD protection rated at 15 kV and operates within a temperature range of -40°C to +85°C in an SSOP-28 package.

Feature Summary

• Integrates three drivers and five receivers for versatile multi-port serial communication
• Features automatic powerdown circuitry to minimize standby power consumption
• Provides robust 15 kV electrostatic discharge protection on all RS-232 lines
• Utilizes on-chip charge pumps to eliminate the need for external voltage sources

Applications

• Portable computing devices such as PDAs and palmtops
• Battery-powered peripherals and handheld equipment
• Industrial control systems requiring reliable serial interfaces
• Notebook and laptop computer expansion ports

Procurement Notes

Verify the specific suffix 'ECB' against official Renesas or Intersil documentation to confirm pinout compatibility and thermal characteristics. Ensure the procurement source provides valid RoHS compliance certificates and moisture sensitivity level (MSL) ratings appropriate for surface-mount assembly processes. Cross-reference the manufacturer part number with current datasheets to validate operational specifications.

Selection Notes

Select this component for designs requiring multiple receiver inputs alongside standard driver outputs in a compact form factor. It is suitable for systems operating on single 3.3 V or 5 V supplies where low quiescent current is critical. Consider the SSOP-28 package constraints regarding board space and thermal dissipation requirements compared to larger packages.

Part Context

This device belongs to the ICL32XXE family of low-power RS-232 transceivers developed by Intersil, now part of Renesas Electronics. The family is characterized by its ability to maintain full RS-232 compliance at lower supply voltages while incorporating advanced power management features like automatic shutdown.

Replacement Considerations

The ICL3244EIAZ is a comparable variant within the same product line offering similar electrical performance. Verify package equivalence between the ECB and other suffixes before substitution.