HIN238IBZ

Overview

The HIN238IBZ is a high-speed RS-232 transceiver manufactured by Renesas Electronics. It operates on a single +5V power supply, utilizing onboard charge pumps to generate the required ±10V levels for RS-232 communication. The device integrates four drivers and four receivers, supporting full-duplex data transmission at rates up to 120 kb/s. It features TTL/CMOS compatible inputs and outputs with ±10V swing. Key electrical parameters include a minimum operating voltage of 4.5V, a maximum of 5.5V, and a typical operating current of 15 mA. The component is housed in a 24-pin SOIC package.

Feature Summary

• Integrates four drivers and four receivers for full-duplex communication within a single chip.
• Requires only a single +5V power supply due to onboard voltage doubler and inverter circuits.
• Features true TTL/CMOS input compatibility and slew-rate-limited outputs to reduce EMI.
• Includes receiver hysteresis to significantly improve noise rejection capabilities.

Applications

• Portable computers and laptop systems requiring compact serial interfaces.
• Industrial instrumentation and control equipment needing reliable RS-232 connectivity.
• Modems and peripheral devices such as printers and terminals.

Procurement Notes

Verify the specific ordering suffix to confirm package type and temperature range. Confirm RoHS compliance status through official documentation. Check current lifecycle status as older components may be subject to discontinuation. Ensure the supplier provides valid traceability documents for quality assurance purposes.

Selection Notes

Select this component when a single +5V supply is available and ±12V rails are not present. Choose the HIN238IBZ for applications requiring four independent driver/receiver channels. Ensure the design accommodates the necessary external capacitors for the internal charge pump circuitry. Verify that the 120 kb/s data rate meets the system's communication speed requirements.

Part Context

The HIN238IBZ belongs to the HIN238 series of high-speed RS-232 transceivers. This series is designed to replace traditional multi-supply RS-232 solutions by simplifying power requirements. It serves as a direct interface between microprocessors or DSPs and RS-232 ports, facilitating data exchange in embedded systems without complex power management hardware.

Replacement Considerations

Consult official substitution guides for verified alternatives. Generic cross-references may differ in pinout or electrical characteristics. Verify functional equivalence before implementation.