HIN232CB

Overview

The HIN232CB is a high-speed RS-232 transmitter/receiver interface circuit manufactured by Intersil. It meets EIA high-speed RS-232E and V.28 specifications, designed for systems lacking ±12V supplies. The device operates from a single +5V power supply using onboard charge pump converters to generate +10V and -10V rails. Key electrical parameters include a data rate of 230kbit/s, ±10V output swing, and ±30V receiver input voltage range. It features 300Ω power-off source impedance, TTL/CMOS compatible inputs, and hysteresis for noise rejection. The component is available in a 16-pin SOICN package with dimensions of 9.9 x 3.9 mm.

Feature Summary

• Onboard charge pump voltage converters eliminate the need for external dual-voltage supplies
• Transmitter outputs and receiver inputs protected against ±15kV electrostatic discharge
• Low power shutdown mode available in specific family variants for energy conservation
• Slew rate-limited outputs reduce electromagnetic interference during signal transitions

Applications

• High-speed RS-232 communications ports in computer systems
• Portable, mainframe, and laptop computer interfaces
• Peripheral connections for printers and terminals
• Instrumentation and UPS system serial communication
• ISDN terminal adaptors and high-speed modems

Procurement Notes

Verify the exact suffix against official Intersil documentation to confirm package type and temperature range. Ensure the ordering code matches the required RoHS compliance status. Cross-reference the manufacturer's current datasheet revision to validate active status and availability before procurement.

Selection Notes

Select this component when a single +5V supply is mandatory and ±12V generation is impractical. Verify that the 230kbit/s data rate satisfies the application requirements. Confirm that the 16-pin SOICN package fits the PCB layout constraints. Check if the specific variant includes shutdown modes if battery operation is intended.

Part Context

The HIN232CB belongs to the HIN2xxE family of RS-232 transmitters and receivers. This family shares common design features such as onboard charge pumps and ESD protection. Other members like HIN202E, HIN206E, and HIN211E offer different driver/receiver combinations within the same functional architecture.

Replacement Considerations

The ICL3232CBNZ is identified as a low-power upgrade and pin-compatible alternative. Verify compatibility by comparing pin assignments and electrical characteristics against the original HIN232CB specifications.