ISO1042QDWQ1 - 5 Mbps Isolated CAN FD | Texas Instruments
MPN： ISO1042QDWQ1 ✓ 啟用中ISO1042QDWQ1 概覽
A CAN transceiver, also called a CAN controller interface, connects a controller or microcontroller to a differential Controller Area Network bus. A controller area network is a deterministic, multiplexed communication system widely used in automotive electronics, industrial automation, and embedded control. The galvanically isolated implementation belongs to the interface IC hierarchy and creates a protective barrier between the bus-side circuitry and the logic-side circuitry.
The ISO1042QDWQ1 combines several network-protection functions. Its ±70-V DC bus fault protection helps the device survive sustained DC faults on CANH or CANL. The ±30-V common-mode range allows the transceiver to operate when the bus nodes sit substantially above or below the local ground reference. CAN FD support up to 5 Mbps enables faster payload transfer than classic CAN while retaining a familiar CAN bus interface.
Isolation is especially valuable when the CAN bus is electrically distant from the host electronics or when ground-offset conditions cannot be tightly controlled. By separating the bus-side and logic-side portions of the transceiver, the ISO1042QDWQ1 helps limit propagation of noise and fault energy. The automotive-qualified ordering option supports designs that require a component intended for extended-temperature automotive environments.
Typical applications include electric vehicle powertrain controllers, body and comfort modules, battery-management systems, industrial vehicle networks, industrial automation equipment, and other embedded systems that combine CAN communication with high-side fault tolerance. The 5-Mbps capability is useful for gateways, diagnostics interfaces, and control modules moving more data than a classic CAN network.
PCB design should preserve the isolation barrier between logic-side and bus-side copper, maintain the device’s recommended input and output capacitance, and route bus traces away from sensitive analog or high-speed digital signals. Decoupling capacitors should be placed close to their associated supply pins, while the CAN bus connections require careful return-path and surge-current planning.
This page combines the manufacturer’s product specifications, drop-in family alternatives, parameter comparisons, and practical interface-design guidance. It also highlights the distinction between bus-fault protection, common-mode tolerance, CAN FD data rate, and galvanic isolation so engineers can evaluate the device against the actual electrical environment of the target network.
直接替換替代品，適用於 ISO1042QDWQ1 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： ISO1042QDWQ1 （相同外形與佔位） — 差異在於 Package, Product Type, Automotive Qualification, Operating Temperature Range, Maximum Data Rate.
ISO1042DWR
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →ISO1042QDWVRQ1
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →ISO1042BQDWRQ1
✅ 直接替換聯絡詢價
查看資料表 →ISO1042QDWRQ1
✅ 直接替換聯絡詢價
查看資料表 →ISO1042QDWQ1 規格
| Device Type | Galvanically isolated CAN transceiver |
| CAN Standard | ISO11898-2 (2016) |
| Maximum Data Rate | 5 Mbps in CAN FD mode |
| DC Bus Fault Protection | ±70 V |
| Common-Mode Voltage Range | ±30 V |
| Automotive Qualification | Automotive grade |
| 封裝 | 16-SOIC |
| 工作溫度範圍 | -40°C to +125°C |
| Isolation Type | Galvanic isolation |
| Transceiver Configuration | 1/1 CAN transceiver |
| Bus Interface | Differential CANH and CANL |
| CAN FD Support | Yes |
ISO1042QDWQ1 16-soic 腳位配置指南
ISO1042QDWQ1（16-soic 封裝）的腳位配置。 腳位編號、功能與連接圖定義於製造商資料手冊中。請參閱該手冊以取得確切的封裝尺寸與焊接指引。
無詳細腳位定義資料： ISO1042QDWQ1.
請參閱 資料表 以查看完整腳位配置。
典型應用
ISO1042QDWQ1 適用於 6 應用s: Electric Vehicle Powertrain Controller, Battery Management System, Vehicle Body and Comfort Module, Industrial Vehicle CAN Gateway, Industrial Automation Controller, Diagnostic and Test Interface.
Electric Vehicle Powertrain Controller
The ISO1042QDWQ1 fits an electric-vehicle powertrain controller that communicates over a differential CAN FD network while operating in an electrically noisy environment. Its 5-Mbps CAN FD rate supports faster control and diagnostic data transfer, while ±70-V DC bus fault protection and a ±30-V common-mode range improve tolerance to bus faults and ground offsets. Galvanic isolation separates the host controller domain from the vehicle network. Place the transceiver beside the CANH and CANL connectors, keep the isolation boundary clear, and follow the manufacturer’s recommended bus-side layout and capacitor connections.
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Battery Management System
A battery-management system can use the ISO1042QDWQ1 to connect a controller to a CAN FD network carrying pack diagnostics, state data, and service information. The 5-Mbps maximum rate allows the network to move more payload than classic CAN, while the isolated interface helps the low-voltage electronics remain separated from external bus faults. The ±70-V DC protection and ±30-V common-mode tolerance are particularly relevant in systems where transient energy or ground displacement may appear on vehicle wiring. Confirm the complete power-isolation strategy and external protection network in the application schematic.
推薦
Vehicle Body and Comfort Module
The ISO1042QDWQ1 suits body and comfort modules that exchange switch, door, lighting, climate, and diagnostic information over CAN FD. A 5-Mbps link can reduce transfer time for larger frames while maintaining compatibility with the network architecture used by the vehicle program. The ±30-V common-mode range helps the transceiver continue operating when the module and bus ground references are not identical, and the ±70-V DC fault rating adds protection against sustained bus faults. Layout should keep bus traces away from processor clocks, sensor inputs, and the isolation barrier.
推薦
Industrial Vehicle CAN Gateway
The ISO1042QDWQ1 can form the isolated CAN FD side of an industrial-vehicle gateway that links a controller to equipment operating over long cable runs. The transceiver’s 5-Mbps capability supports efficient transfer of diagnostic and control payloads, while galvanic isolation helps bridge systems with different ground potentials. Its ±70-V DC bus fault protection and ±30-V common-mode range provide additional operating margin when wiring is exposed to industrial transients. The design still needs appropriate surge and ESD protection, controlled bus termination, and a layout that preserves the isolation gap.
推薦
Industrial Automation Controller
The ISO1042QDWQ1 is suitable for an industrial automation controller that uses an isolated CAN FD link to communicate with remote actuators, sensors, or service equipment. A rate of up to 5 Mbps reduces the time required to exchange larger diagnostic payloads, while the isolated interface helps limit fault-energy transfer between the controller and field wiring. The ±30-V common-mode range supports operation with ground-offset conditions, and the ±70-V DC bus fault rating improves robustness. Select external surge protection and termination according to the cable length and installation environment.
推薦
Diagnostic and Test Interface
The ISO1042QDWQ1 can be used in a diagnostic interface or test fixture that accesses a CAN FD network through a galvanically isolated boundary. Its 5-Mbps maximum rate permits rapid capture and injection of CAN FD traffic, while the ±70-V DC fault protection and ±30-V common-mode range add robustness at the test interface. Isolation also reduces the risk of direct fault-current coupling between a bench system and the device under test. Use qualified probe connections, defined termination behavior, and current-limited test access so an unexpected bus condition does not damage the instrumentation.
推薦
推薦產品摘要
工程參考資料，適用於 ISO1042QDWQ1 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | ISO1042DWR | ISO1042QDW | ISO1042BQDWRQ1 | ISO1042QDWRQ1 |
|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 16-SOIC | 16-SOIC - same | 16-SOIC - same | 16-SOIC - same | 16-SOIC - same |
主要差異化特點
- Automotive-grade ordering option with 5-Mbps CAN FD support (對比ISO1042DWR)
- Strong sustained DC bus fault tolerance (對比ISO1042QDW)
- Wide common-mode operating range (對比ISO1042BQDWRQ1)
設計說明
Preserve the complete isolation barrier on the PCB by keeping logic-side and bus-side copper, test pads, and routing clear of one another. Place the ISO1042QDWQ1 so its bus-side pins connect directly toward the CANH and CANL connector path, while its logic-side pins face the controller. Avoid routing high-current or high-voltage copper beneath the isolation region, and follow the creepage and clearance dimensions in the manufacturer datasheet.
Do not confuse the ±30-V common-mode operating range with the ±70-V DC bus fault rating. The common-mode value describes the permitted bus-node voltage relative to the local reference during normal operation, while the fault rating describes tolerance to sustained DC bus faults. The application still requires suitable CAN termination, transceiver enable control, wiring protection, and an external surge strategy appropriate to the vehicle or industrial environment.
Place the transceiver and its recommended local bypass capacitors close to their associated supply pins. Keep the CANH and CANL traces short and appropriately coupled, provide the specified termination at each end of the bus, and route the pair away from clocks, switching nodes, and sensitive sensor inputs. If an isolation barrier is required, maintain its designed spacing without adding copper that bridges the two domains.
For CAN FD data rates up to 5 Mbps, validate edge quality, propagation delay, reflection, and common-mode behavior in the final wiring environment. Use the manufacturer’s recommended bus topology and avoid unnecessary stubs or long branches. PCB material, connector transition losses, cable type, and transceiver placement can affect practical bus margin even when the nominal data rate is within the device specification.
合規資訊
Texas Instruments identifies ISO1042QDWQ1 as an automotive part, but no explicit RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals statement appears in the cited product information.