Texas Instruments SN65HVD230QDR

Overview

SN65HVD230QDR from Texas Instruments is an automotive-qualified 3.3-V CAN transceiver compliant with ISO 11898, providing differential transmit/receive capability up to 1 Mbps. It features high-speed mode (RS = GND), slope-controlled slew rate (10–100 kΩ on RS), and 370 µA standby current. Used in ECU nodes interfacing TMS320Lx240x DSPs to twisted-pair CAN buses in harsh industrial and automotive environments.

For engineers reviewing the SN65HVD230QDR datasheet, SN65HVD230QDR pinout, SN65HVD230QDR application, or SN65HVD230QDR equivalent, key selection criteria include bus fault tolerance (±25 V common-mode transient), RS-controlled operating modes, Vref output (VCC/2), and compatibility with 3.3-V CAN controllers in safety-critical networks.

Technical Context

The SN65HVD230QDR implements a differential driver with dominant/recessive state control via D input and RS pin, and a failsafe receiver with hysteresis (VIT+ = 900 mV typ, VIT− = 500 mV typ). Its RS pin enables three distinct operational states: high-speed (fast edge), slope-controlled (10–100 kΩ resistor), and standby (370 µA ICC).

It operates across −40°C to 125°C with −2 V to 7 V common-mode bus range and withstands ±25 V transients. The integrated Vref (pin 5) provides a stable VCC/2 reference for external biasing or level-shifting circuits, while thermal shutdown and open-circuit fail-safe ensure robustness in automotive ECU deployments.

Key Specifications

Pinout & Package

SN65HVD230QDR is housed in an 8-pin SOIC (D) package (5.3 mm × 6.2 mm, 1.27 mm pitch), RoHS-compliant and tape-and-reel packaged (suffix R). Pin 1 is marked by a beveled corner or dot.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar CAN transceiver applications.

Compared with SN65HVD230QDR, SN65HVD231QDR offers deeper power savings but sacrifices Vref and receiver activity in low-power mode, while TCAN1042DRQ1 delivers superior fault protection and timing performance at higher cost and complexity.

Availability

SN65HVD230QDR is available at Aetrix Electronics and suitable for automotive ECU development, industrial PLC integration, and building automation systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for SN65HVD230QDR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity solutions, with decades of automotive-grade product development and manufacturing excellence.

The SN65HVD230QDR belongs to TI's 3.3-V CAN transceiver family designed specifically for ISO 11898-compliant networks in automotive and industrial applications where robustness, low power, and interoperability with 3.3-V microcontrollers are essential.

FAQ

What is the maximum signaling rate supported by the SN65HVD230QDR?

The SN65HVD230QDR supports signaling rates up to 1 Mbps, as defined by the ISO 11898 standard. This maximum rate is achievable in high-speed mode (RS = GND) with proper PCB layout, 120-Ω bus termination, and controlled trace impedance. At lower rates (e.g., 125 kbps), slope control via RS improves EMI performance without sacrificing functionality.

How does the RS pin control operating modes on the SN65HVD230QDR?

The RS pin on the SN65HVD230QDR selects three modes: logic low (<1 V) enables high-speed mode with fastest edge rates; 10–100 kΩ resistor to GND enables slope control (2–15 V/µs slew); and logic high (>0.75×VCC) activates standby mode (370 µA ICC). The SN65HVD230QDR remains fully bus-compatible in all modes without changing pinout or external components.

Does the SN65HVD230QDR provide fail-safe behavior during bus faults?

Yes, the SN65HVD230QDR implements open-circuit fail-safe design: if CANH and CANL become disconnected or shorted together, the receiver output (R) defaults to logic high. This ensures the connected CAN controller receives a defined recessive state, preventing spurious transmissions or undefined behavior in safety-critical automotive and industrial networks.

What is the purpose of the Vref pin on the SN65HVD230QDR?

The Vref pin (pin 5) on the SN65HVD230QDR provides a buffered VCC/2 reference voltage (1.65 V typ at 3.3 V supply), usable for biasing external comparators, ADC references, or level-shifting circuits. It sources/sinks up to ±50 µA while maintaining ±10% accuracy, eliminating the need for an external voltage divider in many 3.3-V CAN system designs.

Is the SN65HVD230QDR compatible with 5-V CAN controllers?

No, the SN65HVD230QDR is strictly a 3.3-V transceiver: its D and R pins accept 3.3-V CMOS logic levels (VIH = 2 V min, VIL = 0.8 V max), and it lacks internal level-shifting. Direct connection to 5-V controllers risks overvoltage damage. For mixed-voltage systems, use discrete level shifters or select a 5-V transceiver such as SN65HVD251.