HIN239CB

Overview

The HIN239CB is a discontinued RS-232 transceiver manufactured by Renesas Electronics Corporation, designed for high-speed serial communication in systems lacking ±12V power supplies. It integrates onboard charge pumps to generate required voltage levels from a single +5V source. The device features three drivers and five receivers, supporting full-duplex operation with a data rate of 120Kbps. It operates within a commercial temperature range of 0°C to 70°C and utilizes a 24-SOIC surface-mount package. Key electrical specifications include a supply voltage range of 5V to 13.2V and a receiver hysteresis of 500 mV to enhance noise immunity.

Feature Summary

• Integrates onboard voltage doubler and inverter circuits to eliminate the need for external ±12V power supplies
• Provides enhanced noise rejection capabilities through built-in receiver hysteresis
• Features true TTL/CMOS input compatibility for direct interfacing with standard logic families
• Includes output current limiting and low power-off source impedance for robust signal integrity

Applications

• High-speed RS-232 communications ports in computer systems
• Peripheral connections for printers and terminals
• Instrumentation and uninterruptible power supply (UPS) interfaces
• Modem applications requiring reliable serial data transmission

Procurement Notes

This component has reached end-of-life status and is no longer manufactured by Renesas Electronics. Verification of availability should focus on obsolete stock or distributor inventories rather than active production channels. Buyers must confirm the authenticity of existing units and review product change notices regarding potential manufacturing origin updates. Replacement strategies should prioritize qualified substitute part numbers to ensure long-term supply chain stability and design continuity.

Selection Notes

Designers selecting this component must account for its discontinued status and limited future availability. The device requires external capacitors of 0.1µF or greater for the onboard charge pump circuitry. Compatibility checks should verify that the target system operates within the specified 5V to 13.2V supply range and 0°C to 70°C temperature envelope. Engineers should evaluate the 120Kbps data rate against application requirements before finalizing the selection.

Part Context

The HIN239CB belongs to the HIN23x family of high-speed RS-232 transmitters and receivers developed by Renesas Electronics. This series is engineered to meet EIA RS-232E and V.28 specifications while simplifying power supply requirements. The family typically includes variants with different driver/receiver counts, such as the HIN232 and HIN239, offering flexibility for various serial interface configurations in industrial and consumer electronics.

Replacement Considerations

Public confirmed substitutes include MAX239CWG+T from Analog Devices Inc./Maxim Integrated. Alternative options listed in distributor records include MAX209CWG+ and other Maxim Integrated variants. These replacements should be evaluated for pinout compatibility and electrical parameter alignment before integration into existing designs.