TJA144x - Dual CAN FD Transceiver Family | NXP Semiconductors
N.º da peça: TJA144x ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $1.45 | $1,45 |
| 10 | $1.3 | $13,00 |
| 100 | $1.12 | $112,00 |
| 500 | $0.95 | $475,00 |
| 1.000 | $0.82 | $820,00 |
| 2.500 | $0.71 | $1.775,00 |
TJA144x Visão geral
A CAN FD transceiver (also called CAN Flexible Data-rate transceiver) is a physical-layer device that converts digital transmit/receive data from a CAN protocol controller into differential voltage levels on the CANH/CANL bus wires. As the boundary between the protocol controller and the bus medium, it provides dominant/recessive arbitration, common-mode rejection, and EMC robustness required in automotive environments. Within the in-vehicle network hierarchy, the CAN transceiver sits below the microcontroller (MCU) and above the wiring harness, forming the physical layer of the OSI seven-layer reference model for CAN.
Key features of the TJA144x family include an ultra-low-current Standby mode with remote CAN wake-up detection, very low electromagnetic emission (EME) and high electromagnetic immunity (EMI), excellent ESD protection (±8 kV HBM on bus pins), and pin compatibility with the prior TJA1042/1051 generations for easy retrofit. The HVSON-14 package exposes an exposed thermal pad for low thermal resistance, and the HVSON-8 variant offers a compact footprint for ECU miniaturization. Devices are AEC-Q100 Grade 0 qualified for automotive temperatures from -40 °C to +150 °C.
Typical applications include body control modules (BCM), gateway ECUs, ADAS sensor nodes, instrument cluster CAN backbones, electric-vehicle battery-management communication, and any in-vehicle network that requires migration from classical CAN to CAN FD without redesigning the PCB or firmware. The 5 Mbit/s CAN FD capability is essential for high-bandwidth automotive Ethernet-cascade gateways and radar/LiDAR sensor clusters.
When designing with the TJA144x, ensure the VCC supply is decoupled with a 100 nF ceramic capacitor close to pin VCC, and that the bus terminations (typically 120 Ω) are present at each end of the CAN bus segment. The VIO pin on HVSON-14 variants allows level-shifting between the 3.3V or 5V MCU and the 5V transceiver logic domain.
This page synthesizes distributor pricing, drop-in alternatives within the TJA144x family and from competitor manufacturers, and practical design notes not consolidated on the manufacturer datasheet, giving design engineers a single decision-ready reference for CAN FD physical-layer selection.
Alternativas drop-in para TJA144x — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com TJA144x (mesmo formato e footprint) — diferindo em Operating Temperature, Supply Voltage (VCC).
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
TJA1440ATK
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
TJA1441ATK
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
TJA1442ATK
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
TJA1448AT
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
TJA1051T/3/1
✅ Drop-In✓ Em estoque
$0.4102 / unidade
Ver ficha técnica →TJA1042T/3
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
TJA144x Especificações
| Product Type | High-speed CAN / CAN FD transceiver family |
| Number of Channels | 1 (per IC; multiple variants in family) |
| Data Rate (max) | 5 Mbit/s (CAN FD); 1 Mbit/s (classical CAN) |
| Standards Compliance | ISO 11898-2, SAE J2284 |
| Supply Voltage (VCC) | 4.5 V to 40 V |
| Bus Pin Voltage Tolerance | -5 V to +45 V |
| Load-Dump Tolerance | Per ISO 7637 (45 V load dump transient) |
| Temperatura de operação | -40 °C to +150 °C (AEC-Q100 Grade 0) |
| ESD Protection (HBM, bus pins) | ±8 kV |
| Power Modes | Basic, Standby, Dual Standby, Sleep (variant dependent) |
| Wake-up Capability | Local + remote CAN wake-up (Standby/Sleep variants) |
| Logic Interface (VIO) | 3.3 V or 5 V level shifting (HVSON-14 variants) |
| Common-Mode Voltage Range | -5 V to +12 V (CANH/CANL) |
| Package Options | HVSON-14 (3.6 x 2.0 mm), HVSON-8 (3.0 x 3.0 mm) |
| Tipo de montagem | Surface Mount |
| AEC-Q100 Qualification | Grade 0 qualified |
| Status RoHS | Compliant |
Configuração de pinos do TJA144x
| Pino 1 | TXD — Transmit data input from CAN controller |
| Pino 2 | GND — Ground reference |
| Pino 3 | VCC — Supply voltage (4.5 V to 40 V) |
| Pino 4 | RXD — Receive data output to CAN controller |
| Pino 5 | VIO — Logic-level supply for digital I/O (3.3 V or 5 V) |
| Pino 6 | EN — Enable control input (variant-dependent) |
| Pino 7 | WAKE — Local wake-up input (Sleep-mode variants) |
| Pino 8 | STBY — Standby mode control input (variant-dependent) |
| Pino 9 | CANH — CAN high bus line |
| Pino 10 | CANL — CAN low bus line |
| Pino 11 | SPLIT — Common-mode stabilization output (variant-dependent) |
| Pino 12 | INH — Inhibit output for voltage regulator control (Sleep variants) |
| Pino 13 | ERR — Error / diagnostic output (variant-dependent) |
| Pino 14 | EP — Exposed thermal pad (connect to GND) |
Aplicações típicas
TJA144x é adequado para 6 aplicaçãos: Body Control Module (BCM), CAN-to-Ethernet Gateway ECU, ADAS Sensor Node (Radar/LiDAR), Electric Vehicle Battery Management System (BMS), Instrument Cluster CAN Backbone, Industrial CAN FD Node (24 V Systems).
Body Control Module (BCM)
The TJA144x is well-suited to body control modules where a single CAN FD backbone connects lighting, door, mirror, and HVAC sub-modules. The 5 Mbit/s CAN FD capability is essential for BCM networks because legacy classical CAN at 1 Mbit/s is increasingly constrained as body controllers add diagnostic and sensor payloads; CAN FD's higher payload (64 bytes vs 8) reduces bus load by 4-8x. The wide 4.5 V to 40 V VCC range eliminates the need for a separate 12 V pre-regulator, while ±45 V bus tolerance covers jump-start and load-dump events. The HVSON-14 package with exposed thermal pad handles the BCM's always-on duty cycle at +85 °C ambient. Pin compatibility with TJA1042 allows an in-design upgrade to CAN FD without PCB rework.
Recomendado
CAN-to-Ethernet Gateway ECU
In automotive gateway ECUs that bridge CAN FD sub-networks with 100BASE-T1 or 1000BASE-T1 automotive Ethernet, the TJA144x provides the physical-layer interface on the CAN side while an Ethernet transceiver (such as NXP TJA1102) handles the Ethernet side. The 5 Mbit/s CAN FD data rate is critical for gateway throughput because aggregation of multiple CAN FD sub-nets (powertrain, chassis, ADAS) into a single Ethernet uplink demands CAN-side bandwidth that classical CAN cannot provide. The dual-Standby variant (TJA1448AT) enables two independent CAN channels with separate wake sources, which is required when the gateway manages partial-networking on both sub-nets. AEC-Q100 Grade 0 qualification supports gateway under-hood or behind-dashboard mounting.
Recomendado
ADAS Sensor Node (Radar/LiDAR)
The TJA144x is deployed in ADAS sensor ECUs (front radar, corner radar, LiDAR) where CAN FD connects the sensor module to the central ADAS domain controller. CAN FD's 5 Mbit/s bandwidth is required because raw sensor object lists and diagnostic telemetry exceed the classical CAN 1 Mbit/s payload capacity, especially for high-resolution 4D radar delivering 200+ objects per cycle. The TJA144x's low standby current (<15 µA typical) is essential for ADAS sensors that remain partially networked during parked-state calibration and OTA update windows. ±8 kV HBM ESD on bus pins protects against handling and field-return ESD events common in sensor manufacturing and service.
Recomendado
Electric Vehicle Battery Management System (BMS)
In BMS master controllers for electric vehicles, the TJA144x provides the CAN FD physical interface between the battery-pack slave modules (typically daisy-chained) and the vehicle's powertrain CAN FD backbone. CAN FD is preferred in BMS because cell-voltage telemetry, temperature data, and State-of-Charge (SOC) updates generate bus traffic that classical CAN at 1 Mbit/s can no longer carry reliably at the required update frequency. The TJA144x's -40 °C to +150 °C AEC-Q100 Grade 0 qualification covers battery-pack ambient temperatures near +85 °C and the +125 °C transient peaks. The 40 V VCC tolerance directly accepts the 12 V or 24 V auxiliary battery rail.
Recomendado
Instrument Cluster CAN Backbone
The TJA144x serves the instrument-cluster CAN FD backbone connecting the cluster display MCU, head-up display (HUD), and central computing unit. The 5 Mbit/s CAN FD data rate is required to transport high-frequency graphics updates, driver-assist visualization, and diagnostic data with deterministic latency. The HVSON-8 compact footprint is ideal for the cluster's tight PCB real estate behind the dashboard. The VIO pin (on HVSON-14 variants) enables direct connection to the cluster MCU's 3.3 V GPIO without external level shifting, simplifying BOM.
Recomendado
Industrial CAN FD Node (24 V Systems)
Although AEC-Q100 qualified for automotive, the TJA144x is used in industrial CAN FD nodes where its 40 V VCC tolerance, ±45 V bus tolerance, and -40 °C to +150 °C range are well-suited to 24 V industrial battery and bus-powered systems. Industrial automation cells, off-highway vehicles, agricultural machinery, and renewable-energy inverter controllers benefit from the 5 Mbit/s CAN FD bandwidth combined with the ruggedized supply tolerance. The exposed thermal pad of HVSON-14 simplifies thermal management in sealed enclosures with limited airflow.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para TJA144x — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | TJA1440ATK | TJA1441ATK | TJA1442ATK | TJA1448AT | TJA1051T/3 | TJA1042T/3 |
|---|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | HVSON-14 (3.6 x 2.0 mm) | HVSON-14 (3.6 x 2.0 mm) - same | HVSON-14 (3.6 x 2.0 mm) - same | HVSON-14 (3.6 x 2.0 mm) - same | HVSON-14 (3.6 x 2.0 mm) - same | HVSON-8 (3.0 x 3.0 mm) - different footprint | HVSON-8 (3.0 x 3.0 mm) - different footprint |
| CAN FD Data Rate (max) | 5 Mbit/s | 5 Mbit/s | 5 Mbit/s | 5 Mbit/s | 5 Mbit/s | 1 Mbit/s (classical CAN only) | 1 Mbit/s (classical CAN only) |
| Power Modes | Basic / Standby / Dual Standby / Sleep (variant dependent) | Basic only | Basic + Standby | Basic + Sleep | Basic + Dual Standby | Standby | Standby |
| VCC Supply Range | 4.5 V to 40 V | 4.5 V to 40 V | 4.5 V to 40 V | 4.5 V to 40 V | 4.5 V to 40 V | 4.5 V to 40 V | 4.5 V to 40 V |
| AEC-Q100 Grade | Grade 0 (-40 °C to +150 °C) | Grade 0 | Grade 0 | Grade 0 | Grade 0 | Grade 0 | Grade 0 |
| ISO 11898-2 Compliance | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Wake-up Sources | Local + remote CAN (variant dependent) | None (Basic mode) | Local + remote CAN | Local + remote CAN | Two independent (Dual Standby) | Remote CAN wake-up | Remote CAN wake-up |
Principais diferenciais
- 5 Mbit/s CAN FD support at production status (vs TJA1042T/3)
- Four power-mode variants under one family (vs TJA1051T/3)
- Pin compatibility with TJA1042/TJA1051 generations (vs TJA1042T/3 and TJA1051T/3)
Notas de projeto
Decouple the VCC pin with a 100 nF ceramic capacitor placed within 2 mm of the pin, and add a 10 µF bulk capacitor on the 12 V battery rail close to the transceiver. The TJA144x draws microamp-level standby current only after Vcc settles above the 4.5 V UVLO threshold; if the upstream 12 V rail sags during engine cranking (down to ~6 V typical), the transceiver will enter power-on-reset. Use the INH output (Sleep variants) to gate an external LDO that powers the MCU, ensuring the MCU loses power last during shutdown for graceful CAN frame completion.
Route the CANH and CANL traces as a tightly-coupled 100-ohm impedance differential pair on the PCB, with symmetric length matching within 1 mm to preserve signal integrity at 5 Mbit/s. Keep the bus traces away from switching-power converters and high-current traces; route ground returns directly under the bus pair. Place 120 Ω termination resistors at each end of the CAN bus segment, NOT at every node - splitting the termination improves signal integrity at high data rates. The exposed thermal pad (EP) of the HVSON-14 package must be soldered to a grounded copper pour of at least 10 mm² for thermal dissipation.
Do not omit the VIO decoupling capacitor on HVSON-14 variants - VIO must be present for the digital I/O pins (TXD, RXD) to operate; a floating VIO can cause undefined logic behavior. When migrating from classical CAN (TJA1042/1051) to TJA144x, ensure the CAN protocol controller supports CAN FD; classical CAN-only MCUs cannot drive 5 Mbit/s CAN FD frames even if the transceiver supports it. Verify that bus-pin protection meets ISO 7637 pulse requirements - while the TJA144x bus pins tolerate ±45 V transient, ISO 7637 pulse 1 can exceed this in unmitigated harnesses, requiring an external TVS.
Informações de conformidade
AEC-Q100 Grade 0 qualified per NXP TJA144x product page. RoHS and REACH compliant per NXP product environmental compliance information. Lead-free and halogen-free packaging.
