ISO1042BQDWQ1 - 5 Mbps Isolated CAN FD Transceiver | Texas Instruments
N.º da peça: ISO1042BQDWQ1 ✓ AtivoISO1042BQDWQ1 Visão geral
A CAN transceiver is an interface circuit that converts logic-level signals from a controller into differential CAN bus signals and converts received bus signals back into logic-level data. Galvanic isolation places a physical isolation barrier between the logic-side circuitry and the CAN bus side, helping prevent ground-potential differences and high-voltage transients from propagating into the host electronics. The ISO1042-Q1 family is used in automotive networks where robust fault handling and reliable differential signaling are important.
The ISO1042-Q1 family provides plus-or-minus 70 V DC bus fault protection and a plus-or-minus 30 V common-mode voltage range. These protections increase resilience against transient bus faults, wiring errors, and ground-offset conditions encountered in long vehicle harnesses. The transceiver also supports CAN FD operation at up to 5 Mbps, allowing systems to carry larger payloads and achieve faster update rates than classic CAN communication.
The ISO1042BQDWQ1 is identified as an automotive-qualified member of the ISO1042-Q1 family. The Q1 designation identifies the automotive product line, while the DW package designation corresponds to the 16-pin SOIC outline. The isolation barrier and integrated bus protection make the device suitable for CAN communication between a host controller and a vehicle network, particularly where the bus may be separated from the controller ground domain.
Typical applications include electric-vehicle powertrain controllers, body and comfort modules, battery-management systems, automotive infotainment gateways, industrial CAN FD gateways, and isolated diagnostic interfaces. In a complete CAN link, the transceiver is placed between the CAN controller and the differential CANH and CANL conductors. The bus-side connection must be designed to minimize stub effects, maintain the intended termination network, and provide appropriate surge and ESD protection for the installation environment.
When selecting this part, verify the complete pin configuration, isolation ratings, supply requirements, timing characteristics, and automotive qualification requirements against the manufacturer datasheet. The key design trade-off is the added protection and isolation of the bus interface versus the component count and propagation delay introduced by an isolated transceiver. For a replacement, use the manufacturer pinout and parameter comparison rather than relying only on package similarity.
This page provides an engineering-focused summary of the ISO1042-Q1 CAN FD transceiver, including application guidance, package information, verified manufacturer and distributor references, and drop-in comparison candidates.
Alternativas drop-in para ISO1042BQDWQ1 — 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 ISO1042BQDWQ1 (mesmo formato e footprint) — diferindo em Product Type, Common-Mode Voltage Range, Package, Isolation Type, Automotive Qualification.
ISO1042BQDWRQ1
✅ Drop-InConsulte o preço
Ver ficha técnica →ISO1042BQDWVRQ1
✅ Drop-In✗ Fora de estoque
$1.5052 / unidade
Ver ficha técnica →ISO1042DWVR
✅ Drop-InConsulte o preço
Ver ficha técnica →ISO1042BQDWQ1 Especificações
| Product Type | Galvanically isolated CAN transceiver |
| CAN Data Rate | Up to 5 Mbps in CAN FD mode |
| CAN Standard | ISO11898-2 (2016) |
| Bus Fault Protection | +/-70 V DC |
| Common-Mode Voltage Range | +/-30 V |
| Isolation Type | Galvanic isolation |
| Automotive Qualification | ISO1042-Q1 automotive product family |
| Encapsulamento | 16-pin SOIC |
| Package Code | DW |
| Interface | CAN bus |
| Supported CAN Mode | CAN FD |
| Packaging | Tube |
Guia de Configuração de Pinos do ISO1042BQDWQ1 dw
Configuração de pinos para ISO1042BQDWQ1 (pacote dw). 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 ISO1042BQDWQ1.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
ISO1042BQDWQ1 é adequado para 6 aplicaçãos: Electric Vehicle Powertrain CAN Network, Automotive Body Control CAN FD, Battery Management System Isolation, Automotive Diagnostic Gateway, Industrial CAN FD Gateway, Robotics and Off-Road Control Network.
Electric Vehicle Powertrain CAN Network
The ISO1042BQDWQ1 fits isolated CAN FD links between an inverter controller, traction control module, and vehicle network gateway. Its 5 Mbps CAN FD capability supports faster transfer of torque, motor-state, and diagnostic data than classic CAN, while +/-70 V DC bus fault protection adds resilience to harsh harness conditions. Place the transceiver between the host CAN controller and CANH/CANL, observe the specified isolation boundary, and keep the bus-side layout compact. Validate common-mode behavior, bus fault response, termination, and ground offsets during vehicle-level EMC testing.
Recomendado
Automotive Body Control CAN FD
ISO1042BQDWQ1 can connect body, lighting, door, and climate modules to a CAN FD backbone while separating the controller domain from the vehicle bus. The 16-pin SOIC package supports compact automotive PCB designs, and 5 Mbps CAN FD is useful when nodes exchange larger diagnostic or configuration payloads. The transceiver's +/-30 V common-mode range and +/-70 V DC bus fault protection support robust operation in long multi-node harnesses. Confirm termination placement, fault recovery, isolation capacitance, and conducted-emissions margins in the final module design.
Recomendado
Battery Management System Isolation
The ISO1042BQDWQ1 is suitable for isolated CAN communication between a battery-management controller and a vehicle or industrial energy-storage controller. CAN FD data rates up to 5 Mbps can improve update frequency for pack state, cell-balance commands, and fault records. Galvanic isolation helps maintain separation between the energy domain and the logic domain, while the specified bus protections improve tolerance to external faults. The application still requires careful isolation-barrier layout, defined isolation boundaries, bus termination, and testing for ground offsets and transient events.
Recomendado
Automotive Diagnostic Gateway
ISO1042BQDWQ1 can provide the isolated CAN FD interface used in a gateway between a diagnostics adapter, vehicle domain controller, and service connector. Supporting up to 5 Mbps helps the gateway maintain responsive bidirectional communication for firmware identifiers, diagnostic data, and status information. Its automotive ISO1042-Q1 family positioning and bus fault protection suit vehicle wiring environments, but the gateway must still enforce bus-stuck handling, correct termination, protective routing, and isolation creepage and clearance requirements. Validate the complete diagnostic protocol against the target vehicle network.
Recomendado
Industrial CAN FD Gateway
The ISO1042BQDWQ1 can be used in an industrial gateway that bridges a 5 Mbps CAN FD fieldbus to an isolated controller or network processor. Galvanic isolation reduces the impact of ground-potential differences between machinery and factory networks, while +/-70 V DC bus fault protection strengthens the interface against accidental bus faults. The 16-pin SOIC package is practical for compact control boards. Engineers should still design proper bus termination, surge protection, isolation spacing, and grounding for the installation, and should verify EMC performance under industrial noise conditions.
Recomendado
Robotics and Off-Road Control Network
ISO1042BQDWQ1 is appropriate for CAN FD communication in mobile robotics, construction equipment, and off-road controllers where motors, generators, and long cables can create ground offsets and electrical transients. The 5 Mbps CAN FD rate supports timely control and diagnostic traffic, while the galvanic isolation barrier protects sensitive controller circuitry. The +/-70 V DC bus fault protection strengthens operation during wiring faults, although external surge protection may still be needed for severe industrial environments. Keep the CAN bus route controlled, use the intended 120-ohm termination scheme, and test network behavior during startup and fault recovery.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para ISO1042BQDWQ1 — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | ISO1042BQDWRQ1 | ISO1042BQDWVRQ1 | ISO1042DWVR |
|---|---|---|---|---|
| Package | SOIC-16 (DW) | SOIC-16 (DW) - same | SOIC-16 (DW) - same | SOIC-16 (DW) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Transceiver Type | Galvanically isolated CAN transceiver | Galvanically isolated CAN transceiver | Galvanically isolated CAN transceiver | ISO1042 CAN transceiver |
| Automotive Product Family | ISO1042-Q1 | ISO1042-Q1 | ISO1042-Q1 | Standard ISO1042 |
| Ordering and Packing | Tube-packaged Q1 ordering code | Different ordering or packing suffix | Different ordering or packing suffix | Standard-family ordering code |
Principais diferenciais
- Automotive ISO1042-Q1 family positioning (vs ISO1042DWVR)
- CAN FD performance for faster vehicle-network data transfer (vs ISO1042DWVR)
- Integrated bus fault resilience (vs ISO1042DWVR)
Notas de projeto
Place the transceiver close to the CANH and CANL connector or bus-header entry to minimize exposed trace area and susceptibility to EMI. Keep the logic-side ground and bus-side ground domains separated according to the manufacturer isolation layout, avoid routing isolation barriers beneath high-voltage or high-current paths, and preserve the specified creepage and clearance distances.
Route CANH and CANL as a closely coupled differential pair with continuous reference-plane support and nearly equal trace lengths. Terminate only the two physical ends of the bus with the intended resistor network. Avoid long stubs, test pads that create discontinuities, and unnecessary copper or metal structures near the bus-side interface because these can alter impedance and fault behavior.
Do not assume that the ISO1042BQDWQ1's +/-70 V DC fault rating replaces every protection layer. Check logic-side and bus-side supply limits, unused-pin handling, bus-stuck behavior, loopback configuration, and reset or fault timing in the datasheet. For automotive designs, also confirm the exact automotive temperature grade, isolation rating, EMC qualification, and production ordering code.
Informações de conformidade
The ISO1042-Q1 product family is identified as automotive. RoHS, REACH, lead-free, halogen-free, and conflict-minerals status are not stated in the verified excerpts.
