HIN232ACA

Overview

The HIN232ACA is a high-speed RS-232 transmitter/receiver interface circuit manufactured by Harris Corporation. It meets EIA-232E and V.28 specifications while requiring only a single +5V power supply. The device features onboard charge pump voltage converters that generate +10V and -10V supplies from the 5V input, eliminating the need for external dual-voltage sources. It includes two drivers and two receivers in a 16-pin SSOP package. Key electrical parameters include a data rate of 230kbit/s, typical power consumption of 5mA, and ±10V output swing. The receivers offer ±30V input voltage range and 3kΩ to 7kΩ input impedance.

Feature Summary

• Onboard voltage doubler and inverter generates required positive and negative supplies from a single +5V source
• High data rate capability up to 230kbit/s for fast serial communications
• TTL/CMOS compatible inputs with slew-rate limited outputs for signal integrity
• Receivers feature hysteresis to significantly improve noise rejection performance

Applications

• Portable computers, laptops, and mainframes requiring compact RS-232 ports
• Peripheral connections for printers and terminals
• Instrumentation systems and Uninterruptible Power Supplies (UPS)
• Modem interfaces in embedded systems

Procurement Notes

Verify RoHS compliance status as original Harris documentation indicates non-compliance, while later Renesas iterations may offer Pb-Free options. Confirm package type matches design requirements, as variations exist between SOIC and SSOP formats. Ensure ordering suffixes align with specific temperature ranges and lead-free specifications provided by current distributors or manufacturers.

Selection Notes

Select this component when designing systems limited to a single +5V supply rail without access to ±12V rails. It is suitable for applications needing moderate speed up to 230kbit/s rather than ultra-high-speed alternatives. Consider the 16-pin footprint constraints and verify that external 0.1µF capacitors fit within the board layout. Evaluate thermal dissipation given the typical 5mA quiescent current draw.

Part Context

The HIN232A series represents a generation of RS-232 transceivers designed to simplify power requirements by integrating charge pumps. Originally produced by Harris Semiconductor, the product line was later acquired and continued by Renesas Electronics. This specific model serves as a bridge between TTL/CMOS logic levels and standard RS-232 signaling voltages in space-constrained electronic devices.

Replacement Considerations

Public confirmed substitute part numbers include HIN232ACBNZ and other variants within the HIN232 family. Verify pinout compatibility and functional equivalence before substitution. Check if alternative versions offer updated RoHS compliance or different packaging options such as SOIC versus SSOP.