TJA1049T/3J - 3-5V High-Speed CAN Transceiver | NXP
MPN: TJA1049T/3J ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.3226 | $1.32 |
| 10 | $1.3226 | $13.23 |
| 100 | $1.3226 | $132.26 |
| 500 | $1.3226 | $661.30 |
| 1,000 | $1.3226 | $1,322.60 |
| 3,000 | $1.3226 | $3,967.80 |
TJA1049T/3J Overview
A CAN transceiver is an interface IC that bridges a host controller and a differential communication bus. The CAN controller generates and interprets CAN frames, while the transceiver converts those digital signals into robust differential bus levels and converts received bus levels back into logic-compatible signals. In the hierarchy of electronic components, the TJA1049T/3J belongs to the CAN interface and physical-layer transceiver class, within interface ICs and networking semiconductors.
The principal verified features include a 3 V to 5 V microcontroller-interface range, high-speed CAN operation, differential transmit and receive capability, standby support, and compatibility with the CAN physical layer standards listed by NXP. Its standby function is intended for systems that need low-current operation while retaining bus wake-up capability. The physical two-wire interface supports integration into automotive and industrial CAN networks while leaving arbitration, framing, error management, and message scheduling to the CAN controller.
Technical use requires a CAN controller with TXD and RXD signal connections, a suitable transceiver supply, CAN bus termination, common-mode support, and correctly configured logic levels. The standby pin and mode timing should be reviewed against the system power-management strategy because entering or leaving standby can affect node availability. Because the verified excerpt does not provide a complete timing table, absolute transceiver delay, loop-delay, propagation-delay, receiver threshold, bus-fault, and current-limit values are left as data-needed fields rather than inferred.
Typical applications include automotive body and powertrain electronics, industrial automation equipment, transport systems, embedded gateways, motor controllers, sensor networks, and CAN-based diagnostic equipment. The 8-pin SOIC package is useful when a through-hole-compatible surface-mount assembly process and a compact two-wire bus interface are required.
For robust PCB implementation, place the transceiver close to the connector and CAN bus routing, provide solid ground-plane continuity, route CANH and CANL as a tight differential pair, and place termination only at the physical ends of the bus. Verify that the selected CAN controller, supply voltage, transceiver mode pins, and termination strategy match the complete manufacturer datasheet before production release.
This page consolidates verified NXP product information, distributor references, package details, interface standards, application context, and design guidance. Missing electrical timing, current, environmental, and absolute maximum values are explicitly marked where the supplied verified data does not support a trustworthy value.
Drop-in alternatives for TJA1049T/3J — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with TJA1049T/3J (same form factor and footprint) — differing in Package, Distributor Package Description, Receive Capability, Supply Voltage Range, Transmit Capability.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
TJA1049T/3
✅ Drop-In📋 Reference alternative (not in catalog)
TJA1049TK/3
✅ Drop-In📋 Reference alternative (not in catalog)
TJA1040T/CM
✅ Drop-In✓ In Stock
Contact for price
View Datasheet →TCAN1044A-Q1
✅ Drop-In📋 Reference alternative (not in catalog)
MCP2551T-I/SN
✅ Drop-In✓ In Stock
$1.0218 / Unit
View Datasheet →TJA1049T/3J Specifications
| Product Type | High-speed CAN transceiver |
| CAN Interface | Differential two-wire CAN bus |
| Microcontroller Supply Compatibility | 3 V to 5 V |
| Physical Layer | ISO 11898 |
| Referenced Standard 1 | ISO 11898-2:2003 |
| Referenced Standard 2 | ISO 11898-5:2007 |
| Referenced Standard Status | Pending updated version of ISO 11898-2:2016 |
| Transmit Capability | Differential CAN transmit |
| Receive Capability | Differential CAN receive |
| Operating Mode Feature | Standby mode with bus wake-up capability |
| Nominal Interface | Microcontroller CAN protocol controller |
| Package | 8-pin SOIC |
| Mounting Type | Surface mount |
| Manufacturer | NXP Semiconductors |
| Distributor Package Description | 8-SO |
TJA1049T/3J 8-so Pin Configuration Guide
Pin configuration for TJA1049T/3J (8-so package). Pin numbering, functions, and connection diagrams are defined in the manufacturer datasheet. Refer to it for the exact footprint and soldering guidelines.
No detailed pinout data available for TJA1049T/3J.
Refer to the datasheet for full pin configuration.
Typical Applications
TJA1049T/3J is suitable for 6 applications: Automotive Body Control Modules, Industrial Automation Controllers, Transport and Rail Equipment, CAN-Based Sensor Networks, Electric Motor and Power-Train Control, CAN Diagnostic Gateways.
Automotive Body Control Modules
The TJA1049T/3J fits an automotive body-control module that connects a microcontroller CAN controller to a two-wire vehicle bus. Its verified 3 V to 5 V controller-interface compatibility supports common embedded logic supplies, while the differential physical-layer interface provides the CANH/CANL connection required by the network. Standby mode with bus wake-up capability can help a body module manage power state without immediately removing the node from communication. The final automotive design must verify temperature grade, EMC behavior, fault protection, and qualification in the complete NXP datasheet.
Recommended
Industrial Automation Controllers
TJA1049T/3J can serve as the physical CAN interface in an industrial automation controller, PLC peripheral, or factory sensor gateway. The transceiver bridges a microcontroller CAN controller and the differential CAN bus, allowing the host processor to exchange diagnostic, configuration, and process data. The 3 V to 5 V interface range helps accommodate embedded controller families, while standby mode supports power-conscious idle states. Industrial implementations should additionally validate isolation strategy, surge protection, grounding, cable length, termination, and environmental requirements.
Recommended
Transport and Rail Equipment
The TJA1049T/3J is applicable to transport, rail, and mobile equipment that uses CAN for distributed subsystems, diagnostics, or operator information. A controller-based node can use the transceiver to connect to CANH/CANL wiring while retaining a software-managed communication stack. Standby mode is useful in equipment where duty cycles vary and low idle consumption matters. Because the supplied data does not include complete environmental or protection limits, transport designs should review the full NXP datasheet and qualify the node for its cable, temperature, vibration, and grounding environment.
Recommended
CAN-Based Sensor Networks
TJA1049T/3J can connect a sensor hub or edge sensor node to a shared CAN bus. The transceiver provides the differential physical layer while the microcontroller handles sensor acquisition, message formatting, and fault reporting. A 3 V microcontroller can interface directly according to the verified NXP information, making the device useful in compact embedded sensing products. Standby mode can reduce node activity between measurement events, but wake-up timing, bus loading, termination, and fault recovery must be checked in the complete electrical specification.
Recommended
Electric Motor and Power-Train Control
The TJA1049T/3J is suitable for an embedded motor-control or power-train node that needs CAN connectivity for commands, telemetry, diagnostics, and coordination. The CAN controller handles message arbitration and protocol timing, while the transceiver converts controller signals to the differential bus. This separation allows deterministic control software to run independently of the physical bus. Designers should verify loop timing, fault behavior, common-mode range, bus termination, and protection under the motor environment; those detailed limits are not included in the supplied verified excerpt.
Recommended
CAN Diagnostic Gateways
TJA1049T/3J can be used in a gateway that translates or monitors communication between CAN-connected equipment and another embedded interface. The high-speed physical transceiver supports the CAN side while the controller manages routing, logging, diagnostics, and fault responses. Its standby mode can be useful when the gateway needs to retain bus wake-up capability during low-power periods. For production designs, verify the exact electrical characteristics, mode-control logic, bus-fault requirements, and package pinout from the manufacturer datasheet rather than relying on distributor descriptions.
Recommended
Recommended Products Summary
Engineering reference data for TJA1049T/3J — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TJA1049T/3 | TJA1049TK/3 | TJA1040T | TCAN1044A-Q1 | MCP2551T-I/SN |
|---|---|---|---|---|---|---|
| Manufacturer | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | Texas Instruments | Microchip Technology |
| Product Type | High-speed CAN transceiver | TJA1049/3 family CAN transceiver | TJA1049/3 family CAN transceiver | CAN transceiver | High-speed CAN transceiver candidate | High-speed CAN transceiver |
| Package | SOIC-8 | SOIC-8 family format; verify exact suffix | SOIC-8 family format; verify exact suffix | SOIC-8 | SOIC-8 candidate | SOIC-8 |
| Replacement Verification | Target MPN | Family candidate; verify exact pin and suffix | Family candidate; verify exact pin and suffix | Comparison candidate; not confirmed | Discussion candidate; not confirmed | Comparison candidate; not confirmed |
Key Differentiators
- Verified 3 V to 5 V microcontroller-interface compatibility (vs TJA1040T)
- Standby mode with bus wake-up capability (vs TJA1040T)
- Documented ISO 11898 physical-layer positioning (vs MCP2551T-I/SN)
- 8-pin surface-mount integration (vs TCAN1044A-Q1)
Design Notes
Route CANH and CANL as a closely coupled differential pair, keep the pair length matched, and minimize vias and stubs between the TJA1049T/3J and the bus connector. Provide a continuous ground reference beneath the pair and place the transceiver near the connector when cable or ESD transients are expected. The verified data confirms the two-wire CAN interface but does not provide a complete PCB layout reference, so follow the NXP datasheet and application guidance for final spacing and protection.
Design the local VCC rail with low-noise decoupling and verify the 3 V to 5 V controller compatibility against the exact MCU and transceiver logic thresholds. Place the bypass capacitor close to the supply and ground pins, and keep high-current return paths away from the CAN receiver and controller ground references. The supplied verified excerpt does not state supply current or decoupling values, so do not guess capacitor values or regulator headroom; obtain them from the manufacturer datasheet.
Do not infer replacement compatibility from the SOIC-8 outline alone. Check pin numbers, TXD and RXD directions, standby or mode logic, supply limits, bus-fault behavior, propagation delay, loop delay, and protection characteristics before approving TJA1049T/3, TJA1049TK/3, TJA1040T, TCAN1044A-Q1, or MCP2551T-I/SN as a substitute. A physical footprint match does not guarantee protocol timing, EMC, or fault-protection equivalence.
Treat CAN bus wiring as a potentially noisy environment. Use the termination and common-mode strategy recommended by NXP for the complete network, place termination at physical bus endpoints, and validate radiated and conducted emissions in the final module. Standby and wake-up transitions should also be checked in an EMC test because the verified material identifies bus wake-up capability but does not provide transition timing. Add external protection only after confirming its capacitance and clamping behavior will not degrade CAN operation.
Keep the transceiver, CAN controller, and termination network in a predictable signal path. Avoid placing sensitive analog or high-speed digital return currents beneath the CAN differential pair unless the multilayer stackup and reference-plane design are intentionally controlled. Review connector pin assignment, cable shield termination, ground bonding, and isolation requirements at the system level. These practices are important because the verified product data describes the physical-layer interface but does not define a complete reference layout.
Compliance Information
The supplied verified data identifies ISO 11898 standards and NXP CAN physical-layer capability but does not provide RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations. No compliance claim is inferred.