ICL3243CBZ-T

Overview

The ICL3243CBZ-T is a full-duplex RS-232 transceiver manufactured by Renesas Electronics Corporation, housed in a 28-pin SOIC package. It integrates three drivers and five receivers, supporting data rates up to 250 kbps. The device operates on a single power supply ranging from 3V to 5.5V and features an automatic power-down mode that reduces operating current to less than 1 µA when no signal activity is detected for 300 ms. It complies with RS-232 standards including EIA/TIA-232-F and ITU-T V.28/V.10 specifications.

Feature Summary

• Integrates three independent drivers and five independent receivers for comprehensive serial communication support.
• Features an automatic power-down mode that significantly reduces quiescent current during idle periods.
• Includes internal charge pumps requiring only external 0.1 µF capacitors for voltage generation.
• Provides true driver output performance with guaranteed voltage levels over the full temperature range.

Applications

• Industrial control systems requiring reliable serial communication interfaces.
• Portable battery-powered equipment utilizing low-power standby modes.
• Modems and fax machines adhering to standard RS-232 protocols.
• Point-of-sale terminals and medical instrumentation.

Procurement Notes

Verify the suffix 'T' indicates tape-and-reel packaging rather than tube packaging. Confirm the specific lot date code and RoHS compliance status against the manufacturer's latest documentation. Ensure the ordering part number matches the exact pinout and electrical characteristics required for the design.

Selection Notes

Select this component when a full-duplex interface with multiple receive lines is necessary. The 250 kbps speed suits most standard asynchronous applications. Consider the 28-SOIC package dimensions for PCB layout constraints. Verify that the 3V to 5.5V supply range aligns with the system's power architecture.

Part Context

This part belongs to the ICL3243 family of RS-232 transceivers. The 'CBZ' designation typically refers to the commercial temperature range (0°C to 70°C) and SOIC package. The '-T' suffix specifically denotes the reel packaging format for automated assembly processes.

Replacement Considerations

The MAX3243EIDW from Texas Instruments is a documented alternative. Verify pin compatibility and electrical parameter alignment before substitution. Check if the replacement supports the same automatic power-down functionality and capacitor requirements.