TCAN843-Q1 - Automotive CAN FD Transceiver with Sleep Mode | TI
MPN: TCAN843-Q1 ✓ 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 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
TCAN1043A-Q1
✅ Drop-In📋 Reference alternative (not in catalog)
TCAN1042DRQ1
⚡ Same Package📋 Reference alternative (not in catalog)
TJA1042
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View Datasheet →MCP2562FD-E/SN
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SN65HVD230DR
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View Datasheet →TCAN843-Q1 Maximum Ratings & Electrical Characteristics
| Protocol | CAN FD |
| Number of Channels | 1 |
| Data Rate | 5 Mbps |
| Supply Voltage (VIN) | 3.3 V to 5.5 V |
| Bus Fault Voltage | ±40 V |
| Operating Modes | Normal, Silent, Standby, Sleep |
| Thermal Shutdown | Yes |
| TXD Dominant Timeout | Yes |
| Load Dump Support | Yes |
| Undervoltage Protection | Yes |
| INH Output | Yes |
| Package Options | 14-pin SOIC, SOT, VSON |
| Wettable Flanks | Yes |
| ISO 11898-2:2024 | Compliant |
| Operating Temperature | -40°C to 125°C |
TCAN843-Q1 Pin Configuration
| Pin 1 | TXD — Transmit data input |
| Pin 2 | GND — Ground |
| Pin 3 | VCC — Supply voltage |
| Pin 4 | RXD — Receive data output |
| Pin 5 | VIO — I/O supply voltage |
| Pin 6 | CANH — CAN high bus line |
| Pin 7 | CANL — CAN low bus line |
| Pin 8 | STB — Standby control input |
| Pin 9 | INH — Inhibit output for power supply control |
| Pin 10 | VSUP — Battery supply voltage |
| Pin 11 | WAKE — Wake-up input |
| Pin 12 | SILENT — Silent mode control input |
| Pin 13 | NC — No connect |
| Pin 14 | NC — No connect |
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 (BMS), Gateway Module, Industrial Transportation, Electric Vehicle (EV) Charging, Advanced Driver Assistance Systems (ADAS).
Automotive Body Control Module
The TCAN843-Q1 is ideal for body control modules (BCMs) that manage lighting, locks, and windows. Its sleep mode and INH output enable low quiescent current when the vehicle is off, reducing battery drain. The 5 Mbps CAN FD data rate supports fast communication between BCM and other ECUs. With ±40V fault protection, it withstands automotive transients. The wide supply range (3.3V to 5.5V) allows direct connection to the microcontroller's I/O supply, simplifying design. The device's thermal shutdown ensures reliable operation in high-temperature environments.
Recommended
Battery Management System (BMS)
In battery management systems, the TCAN843-Q1 provides reliable CAN communication between battery cells and the main controller. Its sleep mode is crucial for minimizing current draw when the vehicle is parked, preserving battery charge. The device's INH output can gate power to other system components, further reducing standby current. The 5 Mbps CAN FD data rate enables fast transmission of cell voltage and temperature data. The ±40V fault protection and load-dump support ensure robustness against voltage spikes in automotive environments. The device's wide supply range accommodates varying battery voltages.
Recommended
Gateway Module
The TCAN843-Q1 is well-suited for gateway modules that route CAN traffic between different networks. Its support for both classical CAN and CAN FD at 5 Mbps allows seamless integration with legacy and modern ECUs. The multiple operating modes (normal, silent, standby, sleep) enable flexible power management. The silent mode is useful for diagnostic applications without transmitting. The device's robust fault protection (±40V) ensures reliable operation in harsh automotive environments. The INH output can control external power supplies, enabling efficient power gating in the gateway.
Recommended
Industrial Transportation
The TCAN843-Q1 is designed for industrial transportation applications such as agricultural vehicles, construction equipment, and material handling. Its compliance with ISO 11898-2:2024 ensures interoperability with standard CAN networks. The wide supply voltage range (3.3V to 5.5V) supports various system power rails. The device's sleep mode and INH output help reduce power consumption in battery-powered equipment. The ±40V fault protection and thermal shutdown provide robustness in harsh industrial environments. The 5 Mbps CAN FD data rate enables high-speed communication for real-time control.
Recommended
Electric Vehicle (EV) Charging
In EV charging systems, the TCAN843-Q1 facilitates communication between the charging station and the vehicle's battery management system. Its CAN FD support at 5 Mbps enables high-speed data exchange for charging control and status monitoring. The device's sleep mode is beneficial for reducing power consumption when the charging session is idle. The INH output can control power relays, enhancing system safety. The ±40V fault protection and load-dump support ensure reliability during charging transients. The wide supply range accommodates different control module voltages.
Recommended
Advanced Driver Assistance Systems (ADAS)
The TCAN843-Q1 is used in ADAS applications for reliable communication between sensors, cameras, and the central processing unit. Its high-speed CAN FD capability (5 Mbps) supports the large data volumes generated by ADAS sensors. The device's low-power sleep mode helps reduce overall system power consumption when the vehicle is off. The INH output can manage power to sensor modules, enabling selective wake-up. The robust fault protection (±40V) and thermal shutdown ensure reliable operation in demanding conditions. The wide supply range allows integration with various sensor power rails.
Recommended
Recommended Products Summary
Engineering reference data for TCAN843-Q1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TCAN1043A-Q1 | TCAN1042DRQ1 | TJA1042 | MCP2562FD-E/SN |
|---|---|---|---|---|---|
| Package | 14-pin SOIC, SOT, VSON | 14-pin SOIC | SOIC-8 | SOIC-8 | SOIC-8 |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | NXP Semiconductors | Microchip Technology |
| Data Rate | 5 Mbps | 5 Mbps | 5 Mbps | 5 Mbps | 5 Mbps |
| Supply Voltage | 3.3V to 5.5V | 3.3V to 5.5V | 4.5V to 5.5V | 4.5V to 5.5V | 4.5V to 5.5V |
| Sleep Mode | Yes | Yes | No | No | No |
| INH Output | Yes | Yes | No | No | No |
| Bus Fault Protection | ±40V | ±58V | ±58V | ±58V | ±58V |
| ISO 11898-2:2024 | Compliant | Compliant | Compliant | Compliant | Compliant |
Key Differentiators
- Integrated sleep mode with INH output (vs TCAN1042DRQ1)
- Wide supply voltage range (3.3V to 5.5V) (vs TJA1042)
- ISO 11898-2:2024 compliance (vs MCP2562FD-E/SN)
Design Notes
Place the TCAN843-Q1 close to the CAN bus connector to minimize stub length. Use a 120Ω termination resistor at both ends of the bus. Ensure the VIN pin is connected to the microcontroller's I/O supply to set the correct logic levels. Provide adequate decoupling capacitors (100nF and 10µF) on VCC and VSUP pins.
The TCAN843-Q1's sleep mode can significantly reduce battery current consumption. Use the INH output to gate power to other system components, leaving only the transceiver active to monitor the bus. Ensure the VSUP pin can handle load-dump transients; consider adding a TVS diode for additional protection.
The TCAN843-Q1 includes thermal shutdown protection, but proper PCB layout is still important. Provide a solid ground plane and adequate copper area for heat dissipation. In high-temperature environments, ensure the junction temperature stays within the specified range. The device is rated for -40°C to 125°C operating temperature.
Compliance Information
Automotive grade (Q1) per TI product page. RoHS and REACH compliant.
