Renesas Electronics America Inc HIN202EIBZ-T

HIN202EIBZ-T RS-232 Transceiver Product Summary

The HIN202EIBZ-T is a robust, full-duplex RS-232 transceiver IC from Renesas Electronics, offered in a 16-SOIC package. As a member of the HIN2xxE family, this device is engineered to meet all EIA RS-232E and V.28 specifications while operating solely on a single +5V supply. This makes it highly suitable for modern electronic systems, especially where legacy ±12V rails are not available. The transceiver integrates two drivers and two receivers, enabling both data transmission and reception over standard RS-232 serial links.

Key Functionalities and Performance Benefits of HIN202EIBZ-T

The HIN202EIBZ-T distinguishes itself with a suite of features aimed at reliability, integration, and ease of use. Foremost among these is its internal charge pump, generating ±10V from a +5V supply, thus eliminating the need for complex power arrangements. The device supports high-speed data transfer rates up to 230 kbits/s, making it compatible with ISDN and high-speed modem standards.

Key features include ±15kV ESD protection on all RS-232 I/O pins in accordance with IEC61000, effectively safeguarding the device against transient electrostatic events common in harsh or high-interaction environments. The transmitter outputs offer Slew Rate Limiting (<30V/μs), true TTL/CMOS input compatibility, and robust output current limiting with 300Ω power-off source impedance. On the receiver side, the device tolerates input ranges up to ±30V and employs input hysteresis to deliver outstanding noise immunity—essential for installations susceptible to electrical interference.

An attractive point for low-power systems is the typical supply current of just 5mA, with standby modes on related models achieving power consumption as low as 1μA, enhancing the suitability of the HIN202EIBZ-T in battery-powered applications.

Electrical Characteristics and Environmental Ratings of HIN202EIBZ-T

Engineers evaluating the HIN202EIBZ-T should note its broad electrical and environmental parameters. The device is designed for operation in the industrial temperature range of -40°C to +85°C for the 'EIX' versions, with robust tolerance to voltage excursions at both power and I/O pins. Output stages are safeguarded by short-circuit protection, and all logic thresholds are aligned for seamless TTL/CMOS interfacing.

Thermal management is supported by multiple available packages, each with specified junction-to-ambient thermal resistances, accommodating variations in PCB design and cooling strategy. The HIN202EIBZ-T devices are RoHS compliant, and packaging is compatible with both standard and Pb-free soldering processes.

Functional Design Charge Pump, Transmit and Receive Sections in HIN202EIBZ-T

At the heart of the HIN202EIBZ-T are three cooperating subcircuits: the charge pump, transmitters, and receivers.

The internal charge pump obviates the need for external ±12V supplies, using two phases of an internally generated 125kHz clock to drive voltage doubling and inversion circuits. Typical applications use 0.1μF external capacitors for optimal operation, and the circuit is tolerant to modest deviations in capacitor value, allowing engineering flexibility. Shutdown modes (available on other family members) further enhance efficiency in applications where reduced power consumption during idle periods is critical.

Transmitter sections convert logic-level signals from the system controller to standard RS-232 voltage levels, with each input featuring an internal pullup to maintain predictable default states. Slew-rate limiting minimizes high-frequency emissions and ensures signal integrity over longer cable runs.

Receivers are robust against wide-ranging input voltages and possess design features to ensure stable outputs even in the presence of significant noise—a frequent reality in laboratory, test, or industrial environments. Output logic states are predictable and meet standard logic-level ranges, ensuring simple downstream processing.

Packaging Types and PCB Design Considerations for HIN202EIBZ-T

The HIN202EIBZ-T is available in 16-lead SOIC format, ideal for surface-mount applications. Other devices in the HIN2xxE series expand options with PDIP, SSOP, and TSSOP packages, enhancing mechanical and thermal adaptability for diverse production needs.

Each package is dimensioned in line with JEDEC standards, facilitating compliance in automated assembly lines. Attention to recommended footprint layouts ensures optimal solderability, electrical performance, and thermal dissipation in real-world systems. The IC’s pinout supports straightforward routing for minimal crosstalk and simple integration into both new designs and legacy system upgrades.

Practical Use Cases of HIN202EIBZ-T

The HIN202EIBZ-T is a versatile solution for any design requiring a high-speed RS-232 interface. Its use cases span portable computers, mainframe systems, printers, terminals, instrumentation, UPS systems, and both ISDN and traditional modems. The single +5V operation streamlines its inclusion in modern, low-voltage digital systems, removing the traditional barrier of specialized RS-232 power rails.

In practical engineering, the HIN202EIBZ-T can serve in simple duplex RS-232 ports with handshake signaling, or be used with paired devices to construct expanded four-channel RS-232 interfaces, leveraging shared charge pump reservoirs to minimize component count and increase system efficiency. Its high ESD immunity further makes it suitable for industrial and commercial equipment exposed to direct user interaction or electrically noisy conditions.

Alternative or Compatible Models for HIN202EIBZ-T

Within the Renesas portfolio, several devices share architecture and pinout with the HIN202EIBZ-T, providing practical alternatives for designers seeking similar functional blocks or supply-chain flexibility. Notable related models include the HIN206E, HIN207E, HIN208E, HIN211E, HIN213E, and HIN232E. These models offer various channel counts, additional shutdown features, or enhanced standby behavior. Careful review of each variant’s datasheet is recommended for applications with unique handshaking, channel, or power-down requirements.

Conclusion

: Selecting HIN202EIBZ-T for High-Reliability RS-232 Interfaces

The HIN202EIBZ-T from Renesas Electronics addresses critical needs in RS-232 interface design: high speed, robust signal integrity, wide voltage tolerance, minimal supply requirements, and ultimate ESD protection. Its blend of advanced features and straightforward integration makes it a foundational building block in both new development and long-term industrial support applications. For engineers responsible for device selection or procurement, its proven reliability, availability in standard packaging, and portfolio compatibility ensure both technical and supply-chain advantages in demanding serial communication environments.