TJA1057BTK - High-Speed CAN Transceiver | NXP Semiconductors
MPN: TJA1057BTK ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.45 | $1.45 |
| 10 | $1.28 | $12.80 |
| 100 | $1.05 | $105.00 |
| 500 | $0.89 | $445.00 |
| 1,000 | $0.74 | $740.00 |
TJA1057BTK Overview
A CAN transceiver (also called a CAN bus driver/receiver) is a physical-layer IC that converts the differential digital signaling of a CAN protocol controller into the differential voltage levels required by the ISO 11898-2 CAN bus standard. It sits between a microcontroller's CAN module and the bus wires (CANH/CANL), providing immunity to common-mode noise and ESD protection. CAN transceivers belong to the broader family of interface ICs and are essential building blocks for in-vehicle networking, industrial automation, and any distributed control system that uses the CAN protocol.
The TJA1057BTK delivers differential transmit capability to the bus with controlled slew rate, and differential receive capability with high common-mode rejection. It supports both Normal and Silent operating modes, where Silent mode disables the transmitter for listen-only diagnostics. The device is optimized for low electromagnetic emission (EME) and high electromagnetic immunity (EMI), meeting the stringent automotive requirements for CAN bus communication. Integrated thermal protection, bus dominant time-out, and under-voltage detection on VCC enhance system reliability.
The 8-pin HVSON package (3x3 mm) with exposed thermal pad offers a very compact footprint suitable for space-constrained ECUs (Electronic Control Units). The exposed pad provides a low thermal resistance path to the PCB copper, allowing the IC to handle the bus fault conditions specified in ISO 11898-5 without derating. The TJA1057BTK is functionally identical to the TJA1057CT within the SOI3+ process family - they differ only in the VIO supply pin logic level handling.
Typical applications include automotive body and comfort ECUs, infotainment CAN interfaces, industrial CAN nodes, building automation, and any embedded system requiring a robust, standardized CAN physical layer. In these use cases, the TJA1057BTK acts as the bus interface between a 3.3 V or 5 V microcontroller's CAN controller and the 12 V automotive CAN bus.
A key design consideration is the bus termination: a 120 Ω resistor (or split 60 Ω + 60 Ω with capacitor) must be present at each end of the CAN bus segment. The HVSON exposed pad must be soldered to a copper pad of at least 1 mm² to ensure proper thermal performance under continuous bus fault conditions.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet. The information gain comes from a structured cross-reference analysis combining the TJA1057 datasheet family, the obsolescence brief on TJA1050 replacements, and verified distributor stock data as of 2026-10-16.
Drop-in alternatives for TJA1057BTK — 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:
TJA1057BTK/0J
✅ Drop-In📋 Reference alternative (not in catalog)
TJA1057BTK/1J
✅ Drop-In📋 Reference alternative (not in catalog)
TJA1057CT/0J
✅ Drop-In📋 Reference alternative (not in catalog)
TJA1051T/0J
✅ Drop-In📋 Reference alternative (not in catalog)
TJA1057BTK Specifications
| Product Type | High-speed CAN transceiver |
| Protocol Supported | CAN, CAN FD |
| Maximum Data Rate | 5 Mbps |
| Number of Drivers/Receivers | 1/1 |
| Supply Voltage (VCC) | 4.75 V to 5.25 V |
| Operating Modes | Normal, Silent |
| Package | 8-pin HVSON (3x3 mm) with exposed pad |
| Mounting Type | Surface Mount |
| Operating Temperature | -40 C to +150 C |
| Common-Mode Voltage Range | -27 V to +40 V (bus pins, per ISO 11898-5) |
| Process Technology | SOI3+ |
| AEC-Q100 Qualification | Yes (automotive grade) |
| RoHS Status | Compliant |
| Pin Count | 8 |
TJA1057BTK Pin Configuration
| Pin 1 | TXD — Transmit data input from CAN controller |
| Pin 2 | GND — Ground reference |
| Pin 3 | VCC — 5 V supply voltage |
| Pin 4 | RXD — Receive data output to CAN controller |
| Pin 5 | VIO — Logic-level supply (tied to VCC on /BT variant) |
| Pin 6 | CANL — CAN bus low line |
| Pin 7 | CANH — CAN bus high line |
| Pin 8 | STB — Standby / Silent mode control input |
Typical Applications
TJA1057BTK is suitable for 6 applications: Automotive Body & Lighting Control ECU, Industrial CANopen / CAN FD Node, Electric Vehicle Battery Management System (BMS) CAN Bus, Automotive Infotainment & Gateway Module, Building Automation & HVAC CAN Bus, Agricultural & Off-Road Equipment Telematics.
Automotive Body & Lighting Control ECU
The TJA1057BTK connects a 5 V automotive microcontroller's CAN controller to the vehicle's body CAN bus (typically 500 kbps classic CAN), where its LED links must handle sustained bus traffic from BCM, lighting and door modules. With 5 Mbps CAN FD support and -27 V to +40 V common-mode tolerance per ISO 11898-5, it absorbs 12 V vehicle jump-start and load-dump transients without latch-up, and its low EME meets CISPR 25 Class 5 radiated emission limits. The HVSON-8 footprint fits inside space-constrained BCM PCBs alongside high-side drivers. In a typical design it sits between the MCU CAN_TX/CAN_RX pins and the bus connector, with a split 60 Ω + 60 Ω termination at each bus end.
Recommended
Industrial CANopen / CAN FD Node
In industrial CANopen networks running at 500 kbps to 1 Mbps, the TJA1057BTK provides the physical-layer interface between an STM32 or similar industrial MCU and the CAN bus wiring, with its 5 Mbps CAN FD headroom allowing easy migration to faster CANopen FD profiles. Its 4.75-5.25 V supply matches typical industrial 5 V rails, and the -40 C to +150 C junction range covers outdoor cabinet and factory-floor environments. Galvanic isolation can be added with a digital isolator between the MCU and the TJA1057BTK for factory-bus segments subject to ground-potential differences. The 8-HVSON package drops onto standard SOIC-8 pad layouts with appropriate footprint adjustment.
Recommended
Electric Vehicle Battery Management System (BMS) CAN Bus
The TJA1057BTK provides the bus interface between a battery-management MCU and the high-voltage battery pack CAN bus in EVs and HEVs, where CAN FD at 2 Mbps to 5 Mbps is increasingly used for cell-balancing telemetry. Its wide common-mode tolerance is critical near the high-voltage battery where ground bounce can exceed 20 V during inverter switching. The exposed thermal pad dissipates the energy from ISO 11898-5 bus fault conditions (e.g., short to +24 V) without triggering thermal shutdown during normal traffic. In a typical BMS, the TJA1057BTK sits inside the slave BMS module and communicates with the master VCUs over a 500 kbps / 2 Mbps CAN FD bus.
Recommended
Automotive Infotainment & Gateway Module
In automotive infotainment head units and central gateways, the TJA1057BTK connects the application processor's CAN FD controller to the chassis or powertrain CAN bus, where its 5 Mbps capability and low EME are required to handle multiple high-bandwidth CAN FD channels simultaneously. AEC-Q100 Grade 1 qualification plus PPAP documentation are mandatory for OEM gateway designs. The 5 V VCC rail is already present on the gateway PCB, so no level shifting is required. Typical infotainment designs use 2-4 TJA1057BTK instances to bridge chassis, powertrain, body and diagnostic CAN segments onto the in-vehicle Ethernet backbone.
Recommended
Building Automation & HVAC CAN Bus
The TJA1057BTK is used in commercial building automation controllers, where a CAN bus connects HVAC controllers, VAV boxes, chiller controllers and energy meters on a single 250 kbps or 500 kbps segment. Its -40 C to +125 C ambient range covers unheated rooftop and basement equipment rooms. The Silent mode allows a controller to listen to the bus without driving it, enabling non-intrusive diagnostics during commissioning. The 5 V supply is compatible with most HVAC controller boards that derive 5 V from a 24 VAC wall adapter via a small switching regulator. Each HVAC node typically contains one TJA1057BTK per CAN port, with a 120 Ω termination at the bus ends.
Recommended
Agricultural & Off-Road Equipment Telematics
The TJA1057BTK enables J1939 CAN bus connectivity on tractors, harvesters and construction equipment, where 250 kbps classic CAN is the standard protocol and bus fault tolerance is essential in dirty electrical systems. Its 5 Mbps CAN FD capability provides headroom for the higher-bandwidth J1939 FD profiles under development. Wide common-mode range tolerates ground shift between the cab and trailer, and the AEC-Q100 Grade 1 qualification covers the wide temperature swings of agricultural equipment (-40 C in winter, +125 C under direct sun). The HVSON-8 footprint survives high-vibration environments when properly soldered with the exposed pad attached to a continuous copper pour.
Recommended
Recommended Products Summary
Engineering reference data for TJA1057BTK — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TJA1057BTK/0J | TJA1057BTK/1J | TJA1057CT/0J | TJA1051T/0J |
|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 8-HVSON (3x3 mm) | 8-HVSON (3x3 mm) - same | 8-HVSON (3x3 mm) - same | 8-HVSON (3x3 mm) - same | 8-HVSON (3x3 mm) - same |
| Maximum Data Rate | 5 Mbps (CAN FD) | 5 Mbps (CAN FD) | 5 Mbps (CAN FD) | 5 Mbps (CAN FD) | 1 Mbps (classic CAN only) |
| Supply Voltage | 4.75 V to 5.25 V | 4.75 V to 5.25 V | 4.75 V to 5.25 V | 4.75 V to 5.25 V | 4.75 V to 5.25 V |
| VIO Pin / Logic Level | Tied to VCC (5 V logic only) | Tied to VCC (5 V logic only) | Tied to VCC (5 V logic only) | Separate VIO pin (3.3 V or 5 V) | Tied to VCC (5 V logic only) |
| Operating Modes | Normal, Silent | Normal, Silent | Normal, Silent | Normal, Silent | Normal, Silent, Standby |
| AEC-Q100 Qualification | Yes | Yes | Yes | Yes | Yes |
| Process Technology | SOI3+ | SOI3+ | SOI3+ | SOI3+ | Earlier Mantis process |
| Typical Unit Price (qty 1000) | USD 0.74 | USD 0.74 | USD 0.74 | USD 0.78 | USD 0.95 |
Key Differentiators
- Highest CAN FD data rate in the Mantis family (vs TJA1051T/0J)
- Latest SOI3+ process for best-in-class EMC (vs TJA1050T (legacy SO-8 part))
- Integrated VIO tie for 5 V logic microcontrollers (vs TJA1057CT/0J)
Design Notes
Solder the exposed thermal pad of the HVSON-8 package to a PCB copper pad of at least 1 mm² connected to the GND plane. This pad serves both as the primary thermal path (dissipating bus-fault heat per ISO 11898-5) and as the low-inductance ground return for the CANH/CANL differential pair. Without proper soldering, junction temperature can exceed 150 C and trigger thermal shutdown during a sustained bus short to battery.
Route the CANH and CANL traces as a 100 Ω differential pair with controlled 50 Ω single-ended impedance, kept as short as possible and symmetric around the IC. Use a 120 Ω termination resistor (or split 60 Ω + 60 Ω with 4.7 nF common-mode cap) at each end of the bus segment. Keep bus traces away from switching converter inductors and high-dV/dt signals to minimize EMI coupling, per the layout guidelines in the TJA1057 datasheet section on PCB design.
Do not leave the STB (standby/silent) pin floating - tie it to GND for Normal mode operation, or to VCC for Silent mode. A floating STB pin can cause intermittent bus faults. Also, ensure the VCC supply is clean: the TJA1057BTK does not have an internal regulator, so a noisy 5 V rail from a switching converter can couple into the bus and exceed EME specifications. Add a 100 nF ceramic + 10 µF bulk decoupling network within 5 mm of the VCC pin.
For CAN FD at 5 Mbps, the loop delay through the transceiver must be checked against the CAN controller's secondary sample point (SSP). The TJA1057BTK's typical loop delay is 150 ns (TXD-to-RXD), which is comfortably within the ISO 11898-2:2024 specification for 5 Mbps operation. At 1 Mbps classic CAN, loop delay is not a concern. Always verify timing margins using the propagation delay curves in the datasheet section on timing characteristics.
Compliance Information
AEC-Q100 Grade 1 qualified for automotive. RoHS compliant per NXP product page. Halogen-free status not explicitly stated in retrieved web data - marked as unknown per data authenticity rules.
