ISO1042DWV - 5 Mbps Reinforced Isolated CAN | Texas Instruments
Артикул: ISO1042DWV ✓ АктивенISO1042DWV Обзор
An isolated CAN transceiver is an interface IC that combines a CAN physical-layer driver and receiver with digital isolation between the bus and the logic-side controller. This device hierarchy—CAN transceiver, isolated interface IC, interface IC, and semiconductor—separates the noisy external bus from the host domain while preserving communication with a CAN controller. Galvanic isolation helps limit ground potential differences and improves fault containment in industrial, automotive, and transportation systems.
The ISO1042DWV supports the ISO 11898-2:2016 physical-layer standard. Its principal protections include ±70 V DC bus fault protection and operation across a ±30 V common-mode range. These ratings are particularly useful in electrically noisy installations where ground shifts or accidental bus-to-ground faults can exceed normal CAN operating voltages. The 5 Mbps CAN FD capability also allows higher-throughput communication than the 1 Mbps classic CAN limit.
The digital isolation barrier provides 5000 VRMS withstand capability, while the 152 ns loop delay supports deterministic signal propagation between the bus and logic domains. The device integrates a CAN transmitter, receiver, isolation barrier, and protection circuitry, reducing the number of external interface components required. Its wide-body SOIC package also provides increased pin spacing for isolation applications.
Typical uses include isolated industrial CAN links, electric-vehicle subsystems, transportation equipment, robotics controllers, building automation, and high-voltage battery-management interfaces. In these systems, the ISO1042DWV can connect a bus through its CAN side while presenting conventional logic-level RXD and TXD signals to an isolated controller domain.
PCB design must preserve the isolation barrier, route the CAN bus and transceiver output away from sensitive logic, and place protection and bypass components directly at the relevant pins. Bus shielding, a defined reference network, and appropriate common-mode termination should be validated at system level. The 8-pin SOIC-8 package must not be confused with narrower 8-pin SOIC variants or non-pin-compatible isolated CAN devices.
Аналоги без доработки для ISO1042DWV — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с ISO1042DWV (тот же форм-фактор и посадочное место) — отличается по Package, Product Type, Protocol, Bus Fault Protection, Data Rate.
ISO1042BDWVR
✅ Прямая заменаУточнить цену
Открыть даташит →ISO1042QDWVRQ1
✅ Прямая замена ⚠️ Характеристики не провереныУточнить цену
Открыть даташит →ISO1042BQDWVRQ1
✅ Прямая замена ⚠️ Характеристики не провереныУточнить цену
Открыть даташит →ISO1042DWV Характеристики
| Product Type | Digitally isolated CAN transceiver |
| Classic CAN Data Rate | 1 Mbps |
| CAN FD Data Rate | 5 Mbps |
| Loop Delay | 152 ns |
| DC Bus Fault Protection | ±70 V |
| Common-Mode Voltage Range | ±30 V |
| Isolation Withstand Voltage | 5000 VRMS |
| CAN Physical-Layer Standard | ISO 11898-2:2016 |
| Isolation Type | Reinforced |
| Корпус | 8-pin wide-body SOIC (DWV) |
| Число выводов | 8 pins |
| Тип монтажа | Surface mount |
| Evaluation Module | ISO1042DWVEVM |
Руководство по цоколевке ISO1042DWV в корпусе 8-pin wide-body soic (dwv)
Цоколевка для ISO1042DWV (корпус 8-pin wide-body soic (dwv)). Нумерация выводов, функции и схемы подключения определены в техническом описании производителя. Обратитесь к нему для точного посадочного места и рекомендаций по пайке.
Нет подробных данных о распиновке для ISO1042DWV.
Обратитесь к даташиту для полной конфигурации выводов.
Типичное применение
ISO1042DWV подходит для 6 применениеs: Industrial CAN Automation, Electric Vehicle Battery Systems, Robotics and Motor Control, Transportation and Rail Equipment, Building Automation Networks, High-Voltage Data Acquisition.
Industrial CAN Automation
The ISO1042DWV fits industrial automation links where controller electronics must remain separated from field-wired CAN equipment. Its ±70 V DC bus-fault protection and ±30 V common-mode range improve tolerance of ground shifts and wiring faults, while the reinforced 5000 VRMS isolation barrier separates the logic domain from the bus. Classic CAN is supported to 1 Mbps and CAN FD to 5 Mbps. In a PLC or robot controller, the transceiver can provide isolated RXD and TXD signals while the 152 ns loop delay supports predictable timing. The wide-body SOIC package also provides useful physical spacing across the isolation barrier. System designers should still validate fault energy, common-mode transients, grounding, and shield termination under the actual installation conditions rather than relying on device ratings alone.
Рекомендуется
Electric Vehicle Battery Systems
The ISO1042DWV is appropriate for CAN communications between battery-management electronics and vehicle controllers when galvanic separation is required. The reinforced isolation withstand rating of 5000 VRMS provides a defined barrier between the traction or charging domain and logic circuitry, while ±70 V DC bus-fault protection handles conditions beyond normal CAN operating levels. Supporting CAN FD at 5 Mbps permits higher-rate diagnostics or battery data transfer, and the 152 ns loop delay contributes to a deterministic propagation budget. In a battery pack controller, the device can isolate the vehicle CAN segment from the low-voltage electronics. Engineers must verify the system isolation class, bus topology, termination, and protection-network behavior, especially during precharge and transient events.
Рекомендуется
Robotics and Motor Control
The ISO1042DWV supports CAN-based coordination in robots and industrial motor-control systems where long cable runs can introduce ground potential differences. Its ±30 V common-mode range and ±70 V DC bus-fault protection increase tolerance to wiring errors and noisy industrial environments. The device supports CAN FD at 5 Mbps, which can improve update rates for motion commands and sensor feedback compared with a classic 1 Mbps CAN link. The isolated CAN side protects the controller domain, while the logic interface connects to a suitable CAN controller. Layout should preserve creepage and clearance around the isolation barrier and keep switching converters and motor-return paths from coupling into the bus. Firmware must also account for the specified 152 ns transceiver loop delay.
Рекомендуется
Transportation and Rail Equipment
The ISO1042DWV can serve as an isolated CAN interface in transportation equipment where traction, lighting, passenger systems, and service electronics may be connected through long harnesses. Reinforced isolation at 5000 VRMS helps separate the external bus from the logic domain, and ±70 V DC bus-fault protection improves resilience to accidental bus-to-ground conditions. With both 1 Mbps classic CAN and 5 Mbps CAN FD support, the same device family can serve diagnostic and higher-throughput links. The wide-body 8-pin SOIC package facilitates separation across the isolation boundary. Qualification, EMC immunity, and transient withstand must be evaluated against the applicable transportation requirements; the supplied data does not explicitly establish AEC-Q100 status for this ordering code.
Рекомендуется
Building Automation Networks
The ISO1042DWV is useful in building automation controllers where CAN-connected sensors, actuators, and room modules may be separated from a central controller by different ground references. The ±30 V common-mode capability and ±70 V DC fault protection improve robustness in distributed wiring installations, while the reinforced isolation barrier supports cleaner separation between logic and field domains. CAN FD operation up to 5 Mbps can accelerate transfer of richer sensor payloads compared with classic CAN at 1 Mbps. The device can be placed beside a CAN controller with RXD and TXD routed through the logic side of the barrier. Installation practice should include proper bus termination, shield handling, and coordinated surge protection because the transceiver's internal ratings are not a substitute for a complete network protection strategy.
Рекомендуется
High-Voltage Data Acquisition
The ISO1042DWV fits CAN-connected acquisition equipment where a measurement or power-control domain operates at a substantial potential difference from the host electronics. The 5000 VRMS isolation withstand rating and ±70 V DC bus-fault protection provide defined separation and bus robustness, while 5 Mbps CAN FD can accommodate larger diagnostic or configuration packets. The device can carry CAN traffic across the isolation barrier without placing the external bus directly at the host logic reference. Designers should account for the 152 ns loop delay in timing calculations and verify that the isolation barrier's placement, creepage, and clearance satisfy the intended working voltage. External surge protection may still be needed where cables leave the enclosure or connect to long field harnesses.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для ISO1042DWV — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | ISO1042BDWV | ISO1042QDW | ISO1042BQDWVRQ1 |
|---|---|---|---|---|
| Package | 8-pin wide-body SOIC (DWV) | 8-pin wide-body SOIC (DWV) | 8-pin wide-body SOIC (DWV) | 8-pin wide-body SOIC (DWV) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
Ключевые отличия
- Supports CAN FD at twice the classic CAN data-rate ceiling (против ISO1042BDWV)
- Provides substantial bus-fault tolerance (против ISO1042BDWV)
- Maintains a defined 152 ns loop delay (против ISO1042QDW)
Заметки по проектированию
Preserve the isolation barrier by keeping copper, traces, solder mask, and assembly tooling away from the space defined across the ISO1042DWV isolation gap. Place the transceiver so the CAN-side and logic-side networks do not overlap beneath the package. The DWV wide-body SOIC is selected to provide physical spacing for isolation, but adequate creepage and clearance still depend on the PCB coating, pollution degree, working voltage, and applicable installation standard.
Do not substitute ISO1050 on an existing ISO1042DWV board without checking the logic pins. Texas Instruments support material states that ISO1050 swaps RXD and TXD on pins 2 and 3 in the 8-pin SOIC configuration. The result can appear as an inactive CAN node or reversed communication logic even when the package dimensions and isolation ratings look similar. Always compare the manufacturer's pin tables, not only the package drawing.
Route CANH and CANN as a tightly coupled differential pair over a continuous reference plane, keep the pair length matched, and place the termination at the physical ends of the bus. Keep switching-converter loops and high-current return paths away from the CAN traces. Use the 1 Mbps classic CAN or 5 Mbps CAN FD limit only after accounting for transceiver propagation delay, cable delay, topology, and the 152 ns ISO1042DWV loop delay.
Apply the manufacturer-recommended supply decoupling directly at the device power pins and verify the logic-side and CAN-side supplies meet the device's exact operating requirements. The supplied data does not include the ISO1042DWV supply-voltage ranges or capacitor values, so these must be taken from the official datasheet rather than copied from another isolated transceiver. Confirm the supply levels and sequencing requirements before releasing a PCB layout.
Информация о соответствии
The supplied data identifies ISO 11898-2:2016 compliance but does not provide verified RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations for ISO1042DWV.
