HIN237CB-T

Overview

The HIN237CB-T is a single transmitter and receiver RS-232 interface circuit manufactured by Harris Corporation. Designed for single +5V power supply operation, it integrates onboard charge pump voltage converters to generate the required ±10V supplies from the input voltage. The device meets EIA RS-232E and V.28 specifications, supporting data rates up to 120kbit/s. It features three-state TTL/CMOS compatible outputs with ±30V input voltage range on receivers and ±10V output swing on drivers. The component operates within a temperature range of -40°C to +85°C and is housed in a standard SOIC package.

Feature Summary

• Integrates onboard charge pump voltage converters to generate ±10V supplies from a single +5V source
• Supports data transmission rates up to 120kbit/s while meeting EIA RS-232E standards
• Features three-state outputs compatible with TTL and CMOS logic families
• Provides robust noise rejection with ±30V input voltage range on receivers

Applications

• Computer serial communication ports
• Portable and laptop computer interfaces
• Peripheral connections such as printers and terminals

Procurement Notes

Verify the manufacturer origin, as Harris Corporation's semiconductor assets were acquired by Renesas Electronics. Confirm that the specific part number corresponds to the original Harris production or the subsequent Renesas continuation. Ensure the component matches the specified SOIC package and temperature grade (C for commercial) before procurement.

Selection Notes

Select this component when designing systems requiring RS-232 communication with limited power supply options, specifically where only +5V is available. It is suitable for applications needing minimal external capacitance compared to older generations. Consider the 120kbit/s speed limit and ensure compatibility with the system's logic voltage levels.

Part Context

The HIN237 belongs to the HIN200-HIN213 family of RS-232 transceivers developed by Harris Corporation. This family was widely used in the 1990s and early 2000s for serial communication interfaces. Following Harris's exit from the semiconductor market, these products were transferred to Intersil and subsequently to Renesas Electronics, which continues to support the lineage.

Replacement Considerations

Renesas RH637CBZ is a direct successor part number under the current manufacturer ownership. Other potential replacements include MAX232 series devices from Maxim Integrated, though pinouts and external capacitor requirements may differ.