HIN237IB

Overview

The HIN237IB is a dual driver/receiver interface circuit manufactured by Harris Corporation, designed for RS-232 communication applications. It operates from a single +5V power supply and incorporates internal charge pumps to generate the necessary positive and negative voltages required for RS-232 signal levels. The device features two drivers and two receivers, providing full compliance with EIA/TIA-232-E and ITU-T V.28 standards. It utilizes a 16-pin SOIC surface-mount package, offering a compact solution for serial data transmission in industrial and commercial environments.

Feature Summary

• Integrated charge pump circuitry eliminates the need for external dual-voltage power supplies
• Single +5V operation simplifies system power design
• Full compatibility with standard RS-232 protocols and voltage specifications

Applications

• Industrial control systems requiring serial communication
• Computer peripheral interfaces
• Modem connections

Procurement Notes

Verify the manufacturer origin carefully, as Harris Corporation's semiconductor assets were acquired by Renesas Electronics. Ensure the component source is authenticated against current authorized distributors or verified surplus channels to avoid counterfeit parts. Request original datasheets and traceability documentation during acquisition.

Selection Notes

Select this component when a dual-channel RS-232 transceiver is needed with minimal external passive components. It is suitable for designs constrained by space and requiring a single 5V supply rail. Compare pinout and electrical characteristics against modern equivalents if long-term availability is a concern.

Part Context

This part belongs to the Harris IN232 family of RS-232 drivers and receivers. Harris was a prominent semiconductor manufacturer before its acquisition, and these legacy parts remain in use for maintenance and specific industrial retrofits. The 'H' prefix typically denotes high-speed variants within the broader interface circuit portfolio.

Replacement Considerations

Renesas R2324F and MAX232 are common functional replacements. Verify pin compatibility and operating temperature ranges before substitution. Note that newer generations may have different pin configurations or improved noise immunity characteristics.