TCAN843-Q1 - Automotive CAN FD Transceiver with Sleep Mode | TI
MPN: TCAN843-Q1 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.85 | $2.85 |
| 10 | $2.56 | $25.60 |
| 100 | $2.28 | $228.00 |
| 500 | $2.05 | $1,025.00 |
| 1,000 | $1.82 | $1,820.00 |
Drop-in alternatives for TCAN843-Q1 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
TCAN1043A-Q1
β Drop-Inπ Reference alternative (not in catalog)
TCAN843-Q1 Maximum Ratings & Electrical Characteristics
| Protocol | CAN FD |
| Number of Channels | 1 |
| Data Rate | 5 Mbps |
| Supply Voltage (VCC) | 3.3 V to 5.5 V |
| Bus Fault Voltage | Β±40 V |
| Operating Modes | Normal, Silent, Standby, Sleep |
| INH Output | Yes |
| Thermal Shutdown | Yes |
| TXD Dominant Timeout | Yes |
| Undervoltage Protection | Yes |
| Load Dump Support | Yes (on VSUP) |
| Package Type | SOIC-14, SOT-14, VSON-14 |
| Wettable Flanks | Yes |
| Operating Temperature | -40Β°C to 125Β°C |
| Automotive Grade | AEC-Q100 Qualified |
TCAN843-Q1 Pin Configuration
| Pin 1 | TXD β Transmit data input |
| Pin 2 | GND β Ground |
| Pin 3 | VCC β Supply voltage |
| Pin 4 | RXD β Receive data output |
| Pin 5 | VIO β I/O supply voltage |
| Pin 6 | INH β Inhibit output for power gating |
| Pin 7 | STB β Standby control input |
| Pin 8 | EN β Enable input |
| Pin 9 | CANH β CAN high bus line |
| Pin 10 | CANL β CAN low bus line |
| Pin 11 | VSUP β Battery supply voltage |
| Pin 12 | NC β No connect |
| Pin 13 | NC β No connect |
| Pin 14 | GND β Ground |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
TCAN843-Q1 is suitable for 6 applications: Automotive Body Control Module, Battery Management System, Gateway Module, Industrial Transportation, Telematics and V2X, ADAS and Autonomous Driving.
Automotive Body Control Module
The TCAN843-Q1 is ideal for body control modules (BCMs) that require low-power sleep modes to minimize battery drain when the vehicle is off. Its INH pin gates power to the BCM microcontroller, while the transceiver monitors the CAN bus for wake-up events. The device's Β±40V fault protection and thermal shutdown ensure reliable operation in harsh automotive environments. With support for CAN FD up to 5 Mbps, it enables fast communication for advanced body functions like lighting, door locks, and window controls.
Recommended
Battery Management System
In battery management systems (BMS), the TCAN843-Q1 provides reliable CAN FD communication between the battery pack and the vehicle's central controller. Its low-power sleep mode is critical for reducing quiescent current when the vehicle is parked, extending battery life. The device's wide supply voltage range (3.3V to 5.5V) accommodates various BMS architectures, and its robust fault protection (thermal shutdown, undervoltage, Β±40V bus fault) ensures safe operation in high-voltage environments. The INH pin can be used to gate power to the BMS monitoring ICs, further reducing standby power.
Recommended
Gateway Module
The TCAN843-Q1 is well-suited for gateway modules that route CAN traffic between different vehicle networks. Its support for CAN FD at 5 Mbps enables high-throughput data transfer, while its multiple operating modes (normal, silent, standby, sleep) allow the gateway to manage power consumption dynamically. The device's silent mode is particularly useful for listening to the bus without transmitting, which is essential for gateway diagnostics. The SOIC-14 and VSON-14 packages with wettable flanks facilitate automated inspection in high-volume manufacturing.
Recommended
Industrial Transportation
For industrial transportation applications such as forklifts, agricultural vehicles, and construction equipment, the TCAN843-Q1 offers robust CAN FD communication over long bus lengths. Its Β±40V bus fault protection and load-dump support on VSUP ensure survival in harsh electrical environments. The device's wide operating temperature range (-40Β°C to 125Β°C) and AEC-Q100 qualification make it suitable for demanding industrial conditions. The low-power sleep mode helps conserve battery in equipment that sits idle for extended periods.
Recommended
Telematics and V2X
In telematics and vehicle-to-everything (V2X) systems, the TCAN843-Q1 provides reliable CAN FD connectivity for data exchange between the vehicle and external networks. Its high data rate (5 Mbps) supports the large data volumes generated by telematics units, while its low-power sleep mode is essential for reducing battery drain when the vehicle is off. The device's INH pin can be used to control power to the telematics unit, enabling remote wake-up via CAN bus activity. The robust fault protection ensures reliable operation in the automotive environment.
Recommended
ADAS and Autonomous Driving
The TCAN843-Q1 is used in advanced driver-assistance systems (ADAS) and autonomous driving platforms for high-speed CAN FD communication between sensors, cameras, and the central processing unit. Its 5 Mbps data rate enables low-latency data transfer, critical for real-time decision making. The device's silent mode is useful for diagnostics and bus monitoring without interfering with active communication. The AEC-Q100 qualification and robust fault protection ensure reliable operation in safety-critical applications. The low-power sleep mode helps reduce overall system power consumption when the vehicle is parked.
Recommended
Recommended Products Summary
Engineering reference data for TCAN843-Q1 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TCAN1043A-Q1 | TCAN1042-Q1 | TCAN1051-Q1 | TJA1042 | TJA1051T/3/1 | MCP2562FD-E/SN |
|---|---|---|---|---|---|---|---|
| Package | SOIC-14, SOT-14, VSON-14 | SOIC-14 | SOIC-8 | SOIC-8 | SOIC-8 | SOIC-8 | SOIC-8 |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | NXP Semiconductors | NXP Semiconductors | Microchip Technology |
| Data Rate | 5 Mbps | 5 Mbps | 5 Mbps | 5 Mbps | 5 Mbps | 5 Mbps | 5 Mbps |
| Supply Voltage | 3.3V to 5.5V | 4.5V to 5.5V | 4.5V to 5.5V | 4.5V to 5.5V | 4.5V to 5.5V | 4.5V to 5.5V | 2.7V to 5.5V |
| Bus Fault Voltage | Β±40V | Β±58V | Β±58V | Β±58V | Β±58V | Β±58V | Β±58V |
| Sleep Mode | Yes | Yes | No | No | No | No | No |
| INH Pin | Yes | Yes | No | No | No | No | No |
| Automotive Grade | AEC-Q100 | AEC-Q100 | AEC-Q100 | AEC-Q100 | AEC-Q100 | AEC-Q100 | AEC-Q100 |
Key Differentiators
- Integrated sleep mode with INH pin for power gating (vs TCAN1042-Q1)
- Wide supply voltage range (3.3V to 5.5V) (vs TCAN1043A-Q1)
- Multiple package options with wettable flanks (vs TJA1042)
Design Notes
Place the TCAN843-Q1 as close as possible to the CAN bus connector to minimize stub length. Use a 120Ξ© termination resistor at both ends of the bus. Ensure the CANH and CANL traces are routed as a differential pair with controlled impedance (typically 120Ξ© differential).
Decouple the VCC and VSUP pins with 100nF ceramic capacitors placed close to the pins. For VSUP, add a bulk capacitor (e.g., 10Β΅F) to handle load-dump transients. The VIO pin should be connected to the microcontroller's I/O supply and decoupled with a 100nF capacitor.
The TCAN843-Q1 has thermal shutdown protection, but ensure adequate PCB copper area for heat dissipation, especially in high-temperature automotive environments. The VSON package with exposed pad should be soldered to a thermal pad on the PCB for improved thermal performance.
Compliance Information
AEC-Q100 qualified per TI product page. RoHS compliant. Halogen-free status not specified in provided data.
