Specifications
| Type | Description |
|---|---|
| Part Number | SN65HVD251DR |
| Manufacturer | Texas Instruments |
| Product Type | Operational Amplifier |
| Category | Signal Chain |
| Package / Case | SOIC-8 D package, body size 4.90 mm × 3.91 mm |
| Communication Standard | ISO 11898 CAN physical layer; Controller Area Network serial communication |
| Maximum Signaling Rate | 1 Mbps; CAN bus signaling rate |
| Bus Fault Protection | ±36 V; CAN bus pins |
| Common-Mode Range | -7 V to 12 V; CAN bus operation |
| Transient Tolerance | ±200 V; transient protection capability |
| Bus Pin ESD Protection | Exceeds 14 kV HBM; CAN bus pins |
| HBM ESD Rating | ±6000 V; all pins, ANSI/ESDA/JEDEC HBM |
| Maximum CAN Nodes | 120 nodes; high input impedance bus loading |
| Standby Supply Current | 200 µA typical; low-current standby mode |
| Supply Voltage Absolute Maximum | -0.3 V to 7 V; VCC with respect to ground |
| Bus Pin Voltage Absolute Maximum | -36 V to 36 V; CANH or CANL |
| ISO 7637 Transient Voltage | -200 V to 200 V; CANH, CANL; ISO 7637 pulse 1, 2, 3a, 3b |
| Input Voltage Absolute Maximum | -0.3 V to VCC + 0.5 V; D, Rs, or R pins |
| Receiver Output Current Absolute Maximum | -10 mA to 10 mA; R output pin |
| Electrical Fast Transient Burst Immunity | -3 kV to 3 kV; CANH, CANL; IEC 61000-4-4, Classification B |
| Supply Voltage | 5 V; transceiver VCC supply |
| High-Speed Mode Selection | Rs connected to GND; pin 8 mode select |
| Low-Power Mode Selection | High logic level on Rs; driver switched off and receiver remains active |
| Slope Control Resistor Range | 10 kΩ to 100 kΩ; Rs pulldown to GND for slope control mode |
| Slew Rate | 15 V/µs; slope control mode with 10 kΩ external resistor at Rs |
| Slew Rate | 2 V/µs; slope control mode with 100 kΩ external resistor at Rs |
| Driver Input Logic | LOW = dominant, HIGH = recessive; D/TXD input pin |
| Receiver Output Logic | LOW = dominant, HIGH = recessive; R/RXD output pin |
| CANH Pin Function | High-level CAN bus line; pin 7 |
| CANL Pin Function | Low-level CAN bus line; pin 6 |
| Reference Output | VREF output voltage; pin 5 reference output |
| Thermal Protection | Thermal shutdown protection; overtemperature protection feature |
| Hot-Plug Protection | Glitch-free power-up and power-down CAN bus protection; hot-plugging applications |
| Datasheet Source | Manufacturer technical datasheet |
| Datasheet Status | request_only |
Product Overview
The SN65HVD251DR is a Texas Instruments industrial CAN bus transceiver for ISO 11898 CAN physical-layer networks. It interfaces controller-side D/TXD and R/RXD logic with the CANH and CANL bus lines, where the driver input and receiver output both use LOW for dominant state and HIGH for recessive state. CANH is the high-level CAN bus line on pin 7, while CANL is the low-level CAN bus line on pin 6.
The device is specified for a 5 V transceiver VCC supply and 1 Mbps CAN bus signaling. Bus-side ratings include ±36 V fault protection, -7 V to 12 V common-mode operating range, ±200 V transient tolerance, ISO 7637 pulse tolerance from -200 V to 200 V, and bus-pin ESD protection exceeding 14 kV HBM. It also includes thermal shutdown protection and glitch-free power-up and power-down CAN bus protection for hot-plugging applications.
The SOIC-8 D package has a 4.90 mm × 3.91 mm body size. Pin 8 Rs selects high-speed mode when connected to GND, low-power mode with a high logic level, or slope control using a 10 kΩ to 100 kΩ pulldown resistor.
Key Features
- ISO 11898 CAN physical-layer transceiver
- 1 Mbps maximum CAN bus signaling rate
- ±36 V fault protection on CAN bus pins
- -7 V to 12 V CAN common-mode range
- ±200 V transient protection capability
- Bus-pin ESD protection exceeds 14 kV HBM
- Supports up to 120 CAN nodes
- 200 µA typical low-current standby mode
- Rs pin selects high-speed, standby, or slope control
- Thermal shutdown and hot-plug bus protection
Typical Applications
- ISO 11898 CAN networks
- Controller Area Network communication
- Industrial CAN bus nodes
- High node-count CAN buses
- Low-current standby CAN interfaces
- Hot-plugging CAN applications
- Slope-controlled CAN bus designs
Procurement Notes
When requesting a quote for SN65HVD251DR, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.
If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.
For analog and signal-chain sourcing, supply voltage, bandwidth, accuracy, noise level, package, temperature grade, input/output configuration and qualification requirements should be verified before approval.
FAQ
What communication standard does SN65HVD251DR support?
SN65HVD251DR supports the ISO 11898 CAN physical layer for Controller Area Network serial communication. It is an industrial CAN bus transceiver intended to connect controller-side logic signals to CANH and CANL bus lines.
What is the maximum CAN signaling rate?
The maximum CAN bus signaling rate specified for SN65HVD251DR is 1 Mbps. This parameter applies to CAN bus signaling in ISO 11898 physical-layer communication.
How is the Rs pin used on SN65HVD251DR?
Pin 8 Rs selects operating behavior. Connecting Rs to GND selects high-speed mode, applying a high logic level selects low-power mode with the driver switched off and receiver active, and a 10 kΩ to 100 kΩ pulldown enables slope control.
What protection ratings apply to the CAN bus pins?
The CAN bus pins have ±36 V bus fault protection, a -36 V to 36 V absolute maximum bus pin voltage range, transient tolerance of ±200 V, and bus-pin ESD protection that exceeds 14 kV HBM.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: June 30, 2026.
This page is based on manufacturer datasheet information and LDeepAI sourcing review. Specifications should be verified against the official manufacturer datasheet before final procurement or design approval. Final electrical, optical and reliability approval should be confirmed by the buyer's engineering team.