HIN232IB

Overview

The HIN232IB is a high-speed RS-232 transmitter/receiver interface circuit manufactured by Harris Corporation. It meets EIA-232E and V.28 specifications, operating on a single +5V power supply with onboard charge pump voltage converters generating +10V and -10V supplies. The device features two drivers and two receivers in a 16-pin SSOP package. Key electrical parameters include a data rate of up to 230 kbps, ±10V output swing for +5V input, and a typical power consumption of 5mA. It requires only 0.1µF external capacitors.

Feature Summary

• Onboard voltage doubler and inverter generate required supplies from a single +5V source
• High data rate capability up to 230 kbps
• TTL/CMOS compatible inputs with slew-rate limited outputs
• Receivers feature hysteresis for improved noise rejection

Applications

• Portable computers and laptops
• Mainframe computer communications ports
• Printers and terminals
• Instrumentation and UPS systems
• Modems and ISDN terminal adaptors

Procurement Notes

Verify the specific suffix 'IB' against official Harris or Intersil documentation to confirm exact temperature range and RoHS compliance status. Datasheets may list variants like HIN232ACBNZ; ensure the ordered part matches the required industrial or commercial grade. Confirm package dimensions match the SSOP16 specification.

Selection Notes

Select this component when a single +5V supply is available but ±12V rails are not. It is suitable for applications requiring high-speed communication up to 230 kbps. Ensure the design accommodates the 0.1µF minimum capacitance requirement for the charge pump. Verify that the 70°C maximum operating temperature aligns with the system's environmental constraints.

Part Context

The HIN232IB belongs to the HIN232A family of high-speed RS-232 transceivers. This family was originally developed by Harris Semiconductor and later integrated into Intersil and subsequently Renesas Electronics product lines. The device represents a standard solution for legacy RS-232 interfaces in modern low-voltage digital systems.

Replacement Considerations

Publicly confirmed substitutes include the ST232EB from STMicroelectronics and the ASM232 from Guoke Anxin. These alternatives offer similar functionality, such as single-supply operation and high data rates, but require verification of pin compatibility and electrical parameter alignment.