HIN237ACB

Overview

The HIN237ACB is a dual RS-232 line transceiver manufactured by Harris Corporation. It integrates two drivers and two receivers on a single CMOS chip, designed for EIA-232-E, V.24, and V.28 compliant serial communication interfaces. The device operates with a single +5V power supply and includes internal charge pumps to generate the necessary positive and negative voltages for RS-232 signaling without requiring external components. It features Schmitt trigger inputs on the receivers for noise immunity and inverted output polarity on the drivers. The component is housed in a 16-pin Plastic Dual Small Outline (PDSO) package and is rated for operation within a commercial temperature range up to 70°C.

Feature Summary

• Integrates dual drivers and dual receivers for complete RS-232 interface functionality
• Internal charge pump circuitry eliminates need for external capacitors for voltage generation
• Schmitt trigger receiver inputs provide enhanced noise filtering capabilities
• CMOS technology ensures low power consumption during operation

Applications

• Industrial control systems requiring serial data transmission
• Modem interface circuits for data communication equipment
• Point-of-sale terminals and barcode scanners
• Computer peripheral connections adhering to EIA-232 standards

Procurement Notes

Verify the specific suffix 'CB' against official Harris documentation to confirm package variant and temperature grade. Confirm RoHS compliance status as listed records indicate non-compliance for similar variants. Ensure the source document explicitly identifies the manufacturer as Harris Corporation rather than a distributor hosting the datasheet. Cross-reference the part number with current product lifecycle notifications to determine availability.

Selection Notes

Select this component when a dual-channel RS-232 solution is required with minimal external passive components. The CMOS architecture offers lower power dissipation compared to older bipolar alternatives. Verify that the 16-pin SSOP/PDSO footprint matches the target PCB layout constraints. Ensure the operating environment remains within the specified 70°C maximum junction temperature limit for reliable performance.

Part Context

The HIN237 series belongs to the family of high-performance RS-232 transceivers produced by Harris Semiconductor. These devices are engineered to replace legacy bipolar transceivers with more efficient CMOS designs. The HIN237 specifically provides dual channel capability, making it suitable for applications requiring simultaneous transmit and receive paths or multiple serial ports on a single board.

Replacement Considerations

Check for pin-compatible alternatives from other manufacturers if Harris production has ceased. Verify that replacement parts maintain the same 16-pin PDSO/SSOP package dimensions and electrical characteristics, including the +5V supply requirement and Schmitt trigger input thresholds.