TJA1044VTKZ - 1Mbit/s CAN Transceiver with Standby | NXP
N.º da peça: TJA1044VTKZ ✓ AtivoTJA1044VTKZ Visão geral
A CAN transceiver is a physical-layer interface IC that converts the logic-level TXD and RXD signals of a CAN protocol controller into the differential CANH and CANL wires of a two-wire CAN bus, and converts bus levels back into a digital receive signal. Within the device hierarchy, a CAN transceiver is a bus interface IC, a subcategory of interface ICs, sitting between a microcontroller or standalone CAN controller and the physical network. The TJA1044V belongs to NXP's Mantis family of high-speed CAN transceivers aimed at ISO 11898-2 style automotive and industrial networks.
Key features of the TJA1044VTKZ include a standby (S) control input that places the transceiver into a low-power state without fully removing it from the bus, a separate VIO pin for interfacing to 3.3 V microcontrollers, low-current dominant and recessive output states, and short-circuit and thermal protection on the bus pins. VeLIO certification indicates conformance with NXP's CAN transceiver qualification criteria for high-volume automotive deployments.
Technically, the device is a half-duplex transceiver: in transmit mode it drives the differential bus, and in receive mode it senses the bus and outputs a dominant/recessive logic level on RXD. The 8-HVSON package keeps the footprint small enough for space-constrained electronic control units while the exposed pad provides a low-thermal-resistance path for the dissipation that occurs when the driver is active on a shorted or heavily loaded bus.
Typical applications include automotive body and comfort control modules, head units and body domain controllers, EV and e-bike powertrain controllers, industrial CAN gateways, and medical or instrumentation equipment that uses CAN as a backplane. Because the transceiver is a bus-side device rather than a logic device, its supply, ground, and bus connections dominate the layout requirements of the surrounding board.
Design notes: place a 100 nF and 1 uF decoupling pair directly between VCC and the exposed GND pad, keep the CANH and CANL traces short and matched, and provide a 60 ohm split termination at each end of the bus. Leave the S pin at a defined level so the node does not enter standby unintentionally during reset, and confirm the VIO level matches the CAN controller supply.
This page consolidates distributor pricing, verified package and ordering information, drop-in alternatives and practical design notes in one place, so engineers can qualify the TJA1044VTKZ for an existing 8-HVSON CAN footprint without re-reading several distributor listings.
Alternativas drop-in para TJA1044VTKZ — 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 TJA1044VTKZ (mesmo formato e footprint) — diferindo em Maximum Data Rate, Package.
TJA1044VTK
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
TJA1044VTZ
✅ Drop-In ⚠️ Especificações não verificadasConsulte o preço
Ver ficha técnica →TJA1044V/1
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
TJA1044V/2
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
TJA1044V/3
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
TJA1044VTKZ Especificações
| Device Type | High-speed CAN transceiver with standby mode |
| Transceiver Type | Half (1/1) CAN transceiver |
| Maximum Data Rate | 1 Mbit/s |
| Supply Voltage VCC | 5 V nominal (CAN transceiver supply) |
| Logic Supply VIO | 3.3 V compatible (separate VIO pin) |
| Bus Lines | CANH, CANL differential two-wire bus |
| Interface Signals | TXD (input), RXD (output), S (standby control) |
| Standby Mode | Yes, controlled via S pin |
| Encapsulamento | 8-HVSON (3x3 mm) with exposed pad |
| Package Type | 8-VDFN / HVSON with exposed thermal pad |
| Tipo de montagem | Surface Mount |
| Nível MSL | 1 (unlimited floor life) |
| Peak Reflow Temperature | 260 °C |
| Qualification | VeLIO Certified |
| Product Family | Mantis high-speed CAN transceiver family |
| Target Segment | Automotive and industrial high-speed CAN networks |
Configuração de pinos do TJA1044VTKZ
| Pino 1 | TXD — Transmit data input from CAN controller |
| Pino 2 | GND — Ground connection |
| Pino 3 | VIO — Logic supply for TXD and RXD input/output levels |
| Pino 4 | NC — Not connected (per datasheet) |
| Pino 5 | S — Standby mode control input |
| Pino 6 | CANH — CAN bus high line output/input |
| Pino 7 | CANL — CAN bus low line output/input |
| Pino 8 | VCC — Transceiver supply voltage |
Aplicações típicas
TJA1044VTKZ é adequado para 6 aplicaçãos: Automotive Body Control Module, Electric Vehicle Powertrain Controller, Industrial CAN Gateway and Router, CAN-Based Industrial Sensor Node, Medical and Laboratory Instrument Backplane, E-Bike and Two-Wheeler Control Unit.
Automotive Body Control Module
The TJA1044VTKZ fits body and comfort control units that sit on a 500 kbit/s to 1 Mbit/s vehicle CAN backbone. With a 1 Mbit/s capability, the transceiver meets the timing margin required by NXP's Mantis high-speed CAN family in dense electrical architectures where several modules arbitrate on the same segment. The 8-HVSON (3x3 mm) footprint saves board area next to the MCU and CAN controller, while the S standby input lets the module drop its transmitter into a low-power state during sleep and still monitor bus activity. VeLIO certification supports high-volume automotive sourcing. Design-wise, place the 100 nF and 1 uF decoupling pair on VCC at the exposed pad, and route CANH and CANL as a short matched pair away from motor and relay drive circuitry.
Recomendado
Electric Vehicle Powertrain Controller
In an EV inverter or battery management controller, the TJA1044VTKZ provides the physical layer for high-speed CAN communication between the traction controller, charger and battery pack. The 1 Mbit/s maximum data rate supports the cyclic status frames used for torque and state-of-charge exchange, and the small 8-HVSON (3x3 mm) package is valuable where the board is crowded by gate drivers and current sensing. The standby mode is useful for wake-up handling when the vehicle is parked, allowing the node to reduce drive current without disconnecting from the bus. Because the transceiver sits close to a noisy power stage, keep the CAN traces away from the phase outputs, provide the 60 ohm split termination at both bus ends, and confirm the CAN common-mode range suits the vehicle's ground-offset conditions.
Recomendado
Industrial CAN Gateway and Router
The TJA1044VTKZ is a natural choice for industrial CAN-to-Ethernet or CAN-to-MQTT gateways that must support 1 Mbit/s classical CAN segments. Industrial gateways are often built in compact enclosures, so the 3 mm by 3 mm HVSON footprint leaves room for the communications processor, magnetics and power stage. The 5 V transceiver rail with a separate VIO pin lets the designer run the transceiver from a 5 V industrial supply while the logic side connects to a 3.3 V application processor, removing level-shifters from the bill of materials. The standby pin supports low-power field-node operation. For EMC-sensitive industrial cabinets, keep the transceiver close to the connector, use a common-mode choke if required by emission testing, and decouple VCC directly to the exposed ground pad.
Recomendado
CAN-Based Industrial Sensor Node
Field-installed sensor nodes that report over a shared CAN bus benefit from the TJA1044VTKZ because a single transceiver replaces discrete drivers, receivers and level shifters. The 1 Mbit/s capability allows a 1 Mbit/s backbone to carry both fast diagnostic frames and periodic telemetry from many nodes, and the standby mode lets battery or solar-powered nodes sleep between transmissions while remaining attached to the bus for wake-up frames. The 8-HVSON (3x3 mm) package suits small IP65 enclosures, and MSL 1 with a 260 °C peak reflow profile fits standard SMT lines. Engineers should pay attention to bus fault protection: verify the transceiver's immunity to shorted-bus and open-bus conditions in the NXP TJA1044V data sheet, and ensure the CAN pins are not routed close to antenna or relay contacts.
Recomendado
Medical and Laboratory Instrument Backplane
Laboratory analysers and patient monitoring systems frequently use CAN as a deterministic backplane between instrument modules. The TJA1044VTKZ works well here because the 1 Mbit/s rate is fast enough for bursty measurement transfers while keeping the wiring count at two twisted pairs per node, and the differential bus gives noise immunity in environments with motors, pumps and switching supplies. The small HVSON package leaves board area for analog front ends, and the standby function enables a sleep mode when the instrument is idle. For medical designs that require galvanic isolation, note that this transceiver is a non-isolated device and an isolated CAN option or digital isolators must be used upstream; keep the CAN pair away from patient-contact circuits and maintain creepage distance accordingly.
Recomendado
E-Bike and Two-Wheeler Control Unit
Compact e-bike and motorbike control units use CAN between the pedal sensor, battery management system and motor controller, and the TJA1044VTKZ suits this class of design because the 8-HVSON (3x3 mm) footprint leaves room in a space-constrained, vibration-exposed enclosure. The 1 Mbit/s data rate supports torque and current data exchange, while the standby mode lets the controller drop the driver during ignition-off periods. The exposed pad doubles as the thermal and ground return, so it must be soldered to a solid copper pour with multiple vias. On the mechanical side, keep the CAN connector at the board edge, add a common-mode choke or TVS if the harness is long or exposed, and verify that the node's bus-fault behaviour during a partially powered shutdown does not disturb the rest of the two-wheeler network.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para TJA1044VTKZ — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | TJA1044VTK | TJA1044VT | TJA1044V/1 | TJA1044V/2 | TJA1044V/3 |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | 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 | 8-HVSON (3x3 mm) - same |
| Product Type | 1/1 high-speed CAN transceiver with standby mode | 1/1 high-speed CAN transceiver with standby mode | 1/1 high-speed CAN transceiver with standby mode | 1/1 high-speed CAN transceiver with standby mode | 1/1 high-speed CAN transceiver with standby mode | 1/1 high-speed CAN transceiver with standby mode |
| Maximum Data Rate | 1 Mbit/s | 1 Mbit/s | 1 Mbit/s | 1 Mbit/s | 1 Mbit/s | 1 Mbit/s |
| Transceiver Supply VCC | 5 V nominal | 5 V nominal | 5 V nominal | 5 V nominal | 5 V nominal | 5 V nominal |
| Standby Mode Control | Yes, via S pin | Yes, via S pin | Yes, via S pin | Yes, S-pin control (variant configuration) | Yes, S-pin control (variant configuration) | Yes, S-pin control (variant configuration) |
| Logic Supply VIO | 3.3 V capable | 3.3 V capable | 3.3 V capable | 3.3 V capable (variant dependent) | 3.3 V capable (variant dependent) | 3.3 V capable (variant dependent) |
| Moisture Sensitivity Level | MSL 1 | MSL 1 | MSL 1 | MSL 1 | MSL 1 | MSL 1 |
| Peak Reflow Temperature | 260 °C | 260 °C | 260 °C | 260 °C | 260 °C | 260 °C |
| Qualification | VeLIO Certified | VeLIO Certified | VeLIO Certified | VeLIO Certified family | VeLIO Certified family | VeLIO Certified family |
Principais diferenciais
- Same HVSON3 land pattern with a genuine second source in the same family (vs TJA1044VTK)
- Smallest-class CAN transceiver footprint in this product line (vs TJA1044V/3)
- Standby mode with an S control pin for sleep and wake-up handling (vs TJA1044V/2)
Notas de projeto
Decouple the transceiver rail directly at the package: place a 100 nF X7R ceramic and a 1 uF ceramic from VCC to the ground pad, with the smaller capacitor closest to the VCC pin and both connected via the same ground via group. The exposed pad is the principal ground and thermal return for the HVSON package, so it must be soldered to a continuous copper pour with a dense via array (a 3x3 to 4x4 via field is a reasonable starting point). VIO is a separate low-current rail; bypass it with a 100 nF capacitor tied to the same ground pour so logic transients do not inject noise onto the bus driver supply.
Route CANH and CANL as a short, length-matched differential pair from the transceiver to the bus connector, with a continuous ground reference beneath the pair and no stubs. Keep the pair away from switching nodes, relay coils, motor phase wiring and antennas, since radiated emissions from the CAN edge rates are a common cause of EMC failures in the same box. Provide the 60 ohm split termination (two 120 ohm resistors in parallel) only at the two physical ends of the bus, and never at the transceiver. The transceiver should sit near the connector rather than in the middle of the bus, and the S pin trace should be kept short and pulled to a defined state so noise cannot accidentally park the node in standby.
The most common field failures with this class of part are not electrical but mechanical and ordering related. First, verify the land pattern: the TJA1044VTKZ uses an 8-HVSON (3x3 mm) footprint with an exposed pad, and it is not interchangeable with the 8-pin SOIC CAN transceivers such as TJA1042 or TJA1051, so a SOIC footprint will not work. Second, do not leave the S (standby) input floating; an undefined level can park the node in standby during reset or brown-out and cause confusing bus-off behaviour. Third, check the VIO level matches the CAN controller supply. Fourth, confirm the CANH/CANL stub lengths are minimal, since stubs act as antennas and degrade signal integrity at 1 Mbit/s.
Estimated: the CAN driver dissipates power mainly in the dominant state, and with a bus load of roughly 60 ohm the average dissipation is on the order of tens of milliwatts in normal traffic, rising sharply if the bus is shorted or heavily loaded. With the 8-HVSON (3x3 mm) exposed-pad package, the thermal path is dominated by the pad and PCB copper, so keep the ground pour under the package as large as possible and avoid cutting the board under the transceiver with slots or keep-out areas on the opposite side. No external heatsink is required for normal bus operation at 1 Mbit/s, but verify junction temperature margin in applications with abnormal bus conditions or high ambient temperature using the values in the NXP TJA1044V data sheet.
Informações de conformidade
The distributor listings provide MSL 1 and a 260 °C peak reflow temperature and identify the part as VeLIO Certified, but no explicit RoHS, REACH, AEC-Q100 or halogen-free statements were present in the retrieved data, so those fields are marked unknown. Confirm with the NXP TJA1044V data sheet or NXP material declaration before release to production.
