HIN232ACB

Overview

The Intersil HIN232ACB is a high-speed RS-232 line transceiver designed for single +5V power supply operation. It integrates onboard voltage doubler and inverter circuits to generate the required ±10V supplies from the 5V input, eliminating the need for external dual-voltage sources. The device features two drivers and two receivers, supporting data rates up to 120 kbps. It operates within a temperature range of 0°C to +70°C and utilizes a 16-pin SSOP package.

Feature Summary

• Integrates charge pump circuitry to generate internal ±10V rails from a single +5V source
• Provides true TTL/CMOS input compatibility with slew-rate-limited outputs
• Includes hysteresis on receivers to enhance noise rejection capabilities
• Features 300Ω power-off source impedance for safe bus isolation during power loss

Applications

• Portable computer and laptop serial communication ports
• Industrial instrumentation and UPS systems
• Peripheral connections such as printers and terminals

Procurement Notes

Verify the specific suffix against manufacturer documentation to confirm pinout and electrical characteristics. Ensure the selected variant matches the required operating temperature range and package dimensions for your PCB layout. Cross-reference the manufacturer part number with official datasheets to confirm current production status and compliance certifications.

Selection Notes

Select this component when a single +5V supply is available but RS-232 voltage levels are required. It is suitable for applications needing moderate data rates up to 120 kbps. Consider the SSOP package constraints for board space. Verify that the ESD protection requirements align with the specific environment, as basic variants may lack enhanced protection features found in other series members.

Part Context

The HIN232ACB belongs to the HIN232 family of high-speed RS-232 transceivers manufactured by Intersil, now part of Renesas Electronics. This family is characterized by its ability to operate from a single 5V supply while meeting EIA-232-E specifications. The ACB designation typically indicates a specific package type and commercial temperature grade within the broader product line.

FAQ

Does the HIN232ACB require external capacitors for the charge pump?

Yes, the device requires external capacitors (typically 0.1µF or greater) connected to the onboard voltage doubler and inverter to generate the ±10V supplies.

What is the maximum data rate supported by the HIN232ACB?

The HIN232ACB supports data rates up to 120 kbps.

Is the HIN232ACB compatible with standard TTL logic levels?

Yes, the drivers feature true TTL/CMOS input compatibility.