TJA1055T/3/2Z - 125 kbit/s Fault-Tolerant CAN Transceiver | NXP | SO-14
N.º da peça: TJA1055T/3/2Z ✓ AtivoTJA1055T/3/2Z Visão geral
A CAN transceiver is the physical-layer interface between a CAN protocol controller and the two-wire differential bus. It converts the controller's logic-level TXD and RXD signals into balanced bus levels, and returns a filtered digital receive signal. The TJA1055 belongs to the fault-tolerant CAN transceiver family, where the bus driver survives shorted-bus and reversed-battery conditions that would damage a conventional high-speed transceiver.
Key characteristics include operation up to 125 kbit/s, an enhanced fault-tolerant transmit driver, a receive filter with extended glitch rejection, low-current sleep and standby operating modes, and AEC-Q100 qualification for automotive applications. The device is pin-to-pin compatible with the earlier TJA1054 and TJA1054A, which allows existing low-speed CAN body, comfort and diagnostic modules to be updated without a layout change.
Internally the device separates the controller interface from the bus interface so that the bus-side driver can withstand faults independently of the logic side. A dedicated sleep input and internal mode control let a body control module wake the transceiver only when needed, reducing standing current in parked vehicles. The recessive and dominant output levels are defined to suit ISO 11898-2 style low-speed CAN networks.
Typical uses include passenger-car door modules, seat and window controllers, climate control panels, body control units, diagnostic connectors, trailer modules and other 125 kbit/s CAN nodes in vehicles, plus industrial equipment that adopts low-speed CAN for cable-cost reduction.
When laying out the board, place the bus transceiver close to the connector and keep the CANH and CANL traces short, matched in length and free of stubs, because the twisted pair carries a differential signal whose balance determines noise immunity. The logic-side pins need short traces to the CAN controller and a solid ground reference, since the transceiver converts bus common-mode voltage into a single-ended logic output.
This page consolidates manufacturer ratings, package details, drop-in alternatives, application guidance and layout notes so that engineers can evaluate the TJA1055T/3/2Z for a low-speed CAN node without rebuilding the data from multiple sources.
Alternativas drop-in para TJA1055T/3/2Z — 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 TJA1055T/3/2Z (mesmo formato e footprint) — diferindo em Product Type, Mounting Type, Automotive Qualification, Package, Package Type.
TJA1055T/3/1J
✅ Drop-InConsulte o preço
Ver ficha técnica →TJA1055T/2Z
✅ Drop-InConsulte o preço
Ver ficha técnica →TJA1055T/C,512
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
TJA1055T/C,518
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
TJA1051T/3/2Z
✅ Drop-InConsulte o preço
Ver ficha técnica →TJA1057T/1Z
✅ Drop-InConsulte o preço
Ver ficha técnica →TJA1054T
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
TJA1055T/3/2Z Especificações
| Product Type | Enhanced fault-tolerant CAN transceiver (1/1, half duplex) |
| Manufacturer | NXP Semiconductors |
| Transceiver Configuration | 1 transmit / 1 receive channel |
| Maximum Data Rate | 125 kbit/s |
| Supply Voltage Options | 5 V, 9 V, 12 V, 15 V, 18 V, 24 V, 28 V |
| Bus Interface | Differential CAN bus (CANH / CANL) |
| Encapsulamento | SO-14 (14-pin small outline, surface mount) |
| Tipo de montagem | Surface mount, tape and reel |
| Low Power Modes | Sleep mode and standby mode |
| Fault Tolerance | Enhanced fault tolerance for shorted bus and recessive/dominant fault conditions |
| Automotive Qualification | AEC-Q100 qualified |
| Pin Compatibility | Pin-to-pin compatible with TJA1054 and TJA1054A |
| Status RoHS | Compliant |
| REACH Status | unknown |
| Lead-Free | unknown |
| Livre de halogênio | unknown |
Guia de Configuração de Pinos do TJA1055T/3/2Z so-14 (14-pin small outline, surface mount)
Configuração de pinos para TJA1055T/3/2Z (pacote so-14 (14-pin small outline, surface mount)). A numeração dos pinos, funções e diagramas de conexão estão definidos no datasheet do fabricante. Consulte-o para o footprint exato e diretrizes de soldagem.
Nenhum dado detalhado de pinagem disponível para TJA1055T/3/2Z.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
TJA1055T/3/2Z é adequado para 6 aplicaçãos: Passenger Car Body Control Module CAN Links, Door, Seat and Window Control Modules, OBD-II Diagnostic Connectors and Test Equipment, Trailer and Towing Electrical Modules, Industrial Equipment with Low-Speed CAN Networking, Sleep and Standby Low-Power Node Design.
Passenger Car Body Control Module CAN Links
The TJA1055T/3/2Z suits low-speed CAN links inside a body control unit that aggregates door, mirror, seat and lighting functions. At 125 kbit/s the bus cost stays low while the enhanced fault-tolerant driver absorbs harness faults such as a shorted bus line, which is common in body wiring. With sleep and standby modes available, the module can park the transceiver when the vehicle is stationary and still wake reliably for remote diagnostics. AEC-Q100 qualification supports its use in an automotive environment where the transceiver sits close to the harness and connector.
Recomendado
Door, Seat and Window Control Modules
A door or window module on a passenger car is a classic low-speed CAN node, and the TJA1055T/3/2Z provides the physical layer for it. The 1/1 half-duplex channel is enough because the module needs only one transmit and one receive path to its local bus. Accepting 5 V through 28 V supplies means the same device can be used in vehicles with different electrical architectures, while the 14-pin SO package is a footprint many module designs already use. Fault tolerance protects the module when a wiring harness is crushed during a door service.
Recomendado
OBD-II Diagnostic Connectors and Test Equipment
Workshop diagnostic tools and vehicle diagnostic connectors frequently use low-speed CAN to talk with body and comfort modules. The TJA1055T/3/2Z works well as the bus interface in such equipment because it tolerates the faulted-bus conditions that occur when a test harness is connected to an unknown vehicle. Its small 14-pin SO package and single-channel arrangement leave board area for a connector, protection network and a controller. The same die also supports the low-speed fallback used by many body modules during factory programming.
Recomendado
Trailer and Towing Electrical Modules
Trailer modules in 24 V and 28 V truck systems are a strong match for the TJA1055T/3/2Z because the device accepts supply rails up to 28 V. Towing equipment lives in a harsh electrical environment where a mis-wired or shorted bus line is realistic, so the fault-tolerant driver is valuable. A low-speed CAN link at 125 kbit/s is sufficient for lighting, brake and battery-sense commands, and the wide voltage tolerance lets the module run directly from the vehicle supply without a separate regulator for the transceiver.
Recomendado
Industrial Equipment with Low-Speed CAN Networking
Industrial machinery increasingly uses low-speed CAN to link sensors, motor starters and operator panels over a single twisted pair instead of an expensive fieldbus. The TJA1055T/3/2Z brings automotive-grade robustness and fault tolerance to that environment, which helps when cables are run between moving machine parts. Because the device accepts a 5 V supply as well as higher rails, it can sit directly on a 24 V control bus behind a simple regulator. The 14-pin SO package is widely available in assembly houses with SMT capability.
Recomendado
Sleep and Standby Low-Power Node Design
Battery-powered or parked-vehicle nodes need the transceiver to stop drawing current when no traffic is expected. The TJA1055T/3/2Z provides sleep and standby operating modes so the CAN interface can be parked between wake events, which reduces standing load on the vehicle battery compared with keeping the receiver continuously enabled. Because the low-power control is part of the transceiver itself, the CAN controller can remain powered or be gated independently. Designers should verify wake-up timing and the sleep current in the NXP TJA1055 datasheet electrical characteristics before finalising the power budget.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para TJA1055T/3/2Z — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | TJA1055T/3/1J | TJA1055T/2Z | TJA1055T/C,512 | TJA1051T/3/2Z | TJA1057T/1Z |
|---|---|---|---|---|---|---|
| Package | SO-14 (14-SO) | SO-14 (14-SO) - same | SO-14 (14-SO) - same | SO-14 (14-SO) - same | SO-14 (14-SO) - same | SO-14 (14-SO) - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Maximum Bus Data Rate | 125 kbit/s | 125 kbit/s | 125 kbit/s | 125 kbit/s | 125 kbit/s | 125 kbit/s |
| Transmit / Receive Channels | 1 TX / 1 RX (half duplex) | 1 TX / 1 RX | 1 TX / 1 RX | 1 TX / 1 RX | 1 TX / 1 RX | 1 TX / 1 RX |
Principais diferenciais
- Enhanced fault tolerance on the bus driver (vs TJA1051T/3/2Z)
- Sleep and standby low-power modes (vs TJA1054T)
- Pin-to-pin continuity with the installed TJA1054 design base (vs TJA1057T/1Z)
- Wide automotive supply range in a single ordering code (vs TJA1055T/3/1J)
Notas de projeto
Keep the CANH and CANL traces short, matched in length and free of stubs, and route them as a differential pair over a continuous ground plane. The TJA1055T/3/2Z converts bus common-mode voltage into a single-ended RXD signal, so any mismatch between the two lines or a return-path discontinuity shows up directly as noise on the logic side. Place the bus-side pins facing the connector so the twisted pair enters the board without long stubs through the transceiver area.
Place the transceiver supply decoupling capacitor as close as possible to the VCC pin and keep the ground connection to the package ground pin short and wide. The device is intended for 5 V to 28 V automotive rails, so the supply path must be filtered for load-dump and inductive spikes that occur on vehicle wiring. Use a low-ESR ceramic capacitor plus a bulk electrolytic or polymer capacitor close to the bus connector so that harness transients do not propagate into the transceiver supply pin.
Do not substitute a high-speed 1 Mbit/s CAN transceiver for this part in a 125 kbit/s low-speed network without re-checking the bus-side driver behaviour and termination, because the two families use different bus thresholds and edge rates. Likewise, confirm that the transceiver sleep input is driven correctly before releasing the module from standby; leaving the mode control pin floating can keep the node in an unintended state and stop reception of diagnostic requests.
Mount the bus connector, the transceiver and the split termination network as one block so that common-mode currents induced on the harness are returned through the connector shell rather than through the digital ground of the host board. If the module drives other low-speed loads nearby, keep the CAN pair away from switching nodes and antenna feeds. Add the split termination and optional common-mode capacitor network exactly as shown in the application section of the NXP TJA1055 datasheet rather than improvising a termination scheme.
Informações de conformidade
The TJA1055T/3/2Z is listed as an AEC-Q100 qualified automotive CAN transceiver in a 14-pin SO package. RoHS compliance is reported for this part; REACH, lead-free, halogen-free and conflict-minerals declarations are not stated on the product listing pages and remain unconfirmed.
