ICL3243ECAZ-T

Overview

The ICL3243ECAZ-T is a low-power RS-232 transceiver manufactured by Renesas Electronics. It integrates three drivers and five receivers in a single package, supporting full-duplex communication with data rates up to 250 kb/s. The device operates on a single supply voltage ranging from 3 V to 5.5 V, including standard 3.3 V and 5 V levels. It features an automatic power-down mode that reduces the operating supply current to approximately 1 µA when no valid signal is present at the receiver inputs. The component provides 15 kV electrostatic discharge (ESD) protection on all RS-232 lines and is housed in a 28-pin SSOP package suitable for surface mount installation.

Feature Summary

• Integrates three independent drivers and five independent receivers for comprehensive RS-232 connectivity within a compact footprint.
• Incorporates enhanced automatic power-down circuitry that significantly reduces power consumption during idle periods or when input signals are inactive.
• Provides robust 15 kV ESD protection across all RS-232 interface pins to safeguard against electrostatic discharge events.

Applications

• Portable battery-powered equipment requiring extended operational life through low standby current.
• Industrial control systems utilizing RS-232 serial communication protocols.
• Embedded systems interfacing with modems, barcode scanners, or other peripheral devices via serial ports.

Procurement Notes

Verify the specific suffix designation to confirm the tape and reel packaging configuration associated with the -T variant. Ensure compatibility with the required operating temperature range and voltage specifications for the target application environment. Cross-reference the manufacturer's latest documentation to confirm active status and any potential design changes.

Selection Notes

Select this component when a combination of three transmit channels and five receive channels is required for RS-232 applications. Consider the 250 kb/s data rate limit and the 3 V to 5.5 V supply voltage range during system design. Evaluate the need for automatic power-down functionality to optimize battery life in portable designs compared to standard non-power-saving alternatives.

Part Context

This part belongs to the ICL3243 series of RS-232 transceivers, which are designed for low-voltage operation. The series typically includes variants with different packaging options and drive capabilities. The ICL3243 family is widely used in applications requiring reliable serial communication with minimal power impact, serving as a bridge between microcontroller logic levels and RS-232 voltage standards.

Replacement Considerations

SP3243EEA-L is a documented alternative offering similar 3/5 driver/receiver configuration and 28-SSOP packaging. Verify pinout compatibility and electrical parameter alignment before substitution.