HIN236IB

Overview

The HIN236IB is a dual RS-232 transceiver manufactured by Harris Corporation, designed for low-power applications. It operates from a single +3V to +5.5V supply and includes internal charge pumps to generate the required ±5V signals for RS-232 communication. The device features two drivers and two receivers, with receiver inputs compatible with TTL/CMOS levels. It supports data rates up to 120 kbps and is available in an 8-pin SOIC package.

Feature Summary

• Integrated charge pump circuitry eliminates the need for external capacitors typically required for voltage inversion.
• Low quiescent current consumption suitable for battery-powered portable equipment.
• Driver outputs are short-circuit protected to ensure reliability under fault conditions.

Applications

• Portable computers and laptops requiring serial connectivity.
• Battery-operated handheld devices and PDAs.
• Industrial control systems with limited power budgets.

Procurement Notes

Verify the manufacturer origin carefully, as Harris Corporation's semiconductor assets were acquired by Renesas Electronics. Ensure the part number suffix 'IB' corresponds to the correct temperature range and package variant specified in the official datasheet. Confirm authenticity through authorized distributors to avoid counterfeit components.

Selection Notes

Select this component when a dual-channel RS-232 interface is needed with minimal external passive components. It is appropriate for designs constrained by space and power, replacing older bipolar counterparts that require higher voltages or larger external capacitor networks for charge pump operation.

Part Context

This component belongs to the family of low-power RS-232 transceivers developed during the era when Harris Semiconductor was an independent entity. These devices were widely used in the late 1990s and early 2000s for serial communication interfaces in consumer electronics before being integrated into broader portfolios following corporate acquisitions.

Replacement Considerations

Public confirmed substitute part numbers include the MAX236 (Maxim Integrated) and the SP236E (Exar). Verify pin compatibility and electrical specifications against the original datasheet before substitution.