ICL3243ECBZ

Overview

The ICL3243ECBZ is a full-duplex RS-232 transceiver manufactured by Renesas Electronics Corporation. It integrates three drivers and five receivers within a single package, supporting data rates up to 250 kbps. The device operates on a single power supply ranging from 3 V to 5.5 V. It utilizes an internal charge pump circuit to generate the necessary positive and negative voltages for RS-232 signal levels without requiring external components. The component is housed in a 28-pin CBZ package, which corresponds to a 28-SOIC form factor with a width of 7.50 mm. It is designed for surface-mount installation and supports standard RS-232 protocols.

Feature Summary

• Integrates three independent drivers and five independent receivers for full RS-232 communication capability.
• Utilizes an internal charge pump architecture to eliminate the need for external capacitors in voltage generation.
• Operates reliably across a wide single-supply voltage range suitable for both 3V and 5V systems.

Applications

• Industrial control systems requiring serial communication interfaces.
• Modem connections and portable instrumentation devices.
• Point-of-sale (POS) terminals and barcode scanners.

Procurement Notes

Verify the specific suffix 'CBZ' against official Renesas documentation to confirm the exact package dimensions and tape-and-reel or tube availability. Ensure that the operating temperature range aligns with your system requirements, as commercial variants may differ from industrial grades. Cross-reference the manufacturer part number with authorized distributors to confirm current production status and lead times.

Selection Notes

Select this component when a design requires multiple transmit and receive channels within a compact footprint. The integrated charge pump simplifies the bill of materials by removing external boosting capacitors. Consider the 28-SOIC package constraints regarding PCB space and thermal dissipation. Verify that the 250 kbps data rate meets the throughput requirements of the target application before finalizing the selection.

Part Context

This component belongs to the ICL3243 family of RS-232 transceivers produced by Renesas Electronics. The family is characterized by low power consumption and robust performance in noisy environments. The ICL3243ECBZ specifically denotes the commercial grade version in the SOIC package format. It serves as a bridge between microprocessor logic levels and RS-232 signaling standards.

Replacement Considerations

The MAX3243EIDW from Texas Instruments is a documented alternative. Verify pin compatibility and electrical specifications before substitution.