ISO1042DWR - 5 Mbps Isolated CAN Transceiver | Texas Instruments
N.º de pieza: ISO1042DWR ✓ ActivoISO1042DWR Descripción general
An isolated CAN transceiver belongs to the CAN interface and bus-communication hierarchy. It combines a CAN controller-side logic interface, a CAN bus-side driver and receiver, and a galvanic isolation barrier between the two sides. This separation allows a controller and transceiver on one side of the system to communicate with a CAN bus node on the other side while reducing common-mode and ground-potential problems. The ISO1042 is therefore a transceiver rather than a standalone CAN controller; the host MCU or other logic device still handles protocol processing.
The headline features are flexible data rate operation up to 5 Mbps, 70-V bus fault protection, reinforced isolation, and a 16-pin SOIC footprint. The bus-side protection is intended to improve tolerance during fault conditions where a CAN node may be exposed to excessive bus voltage. The flexible data-rate feature allows the same device to be used in networks operating at different speeds, while the isolation barrier supports designs where the CAN bus ground is not shared with the logic ground.
Typical applications include industrial automation equipment, electric motor controls, building-control gateways, automotive body electronics, robotics, and CAN-based sensor networks. In a motor controller, the isolated interface helps separate the low-voltage control circuitry from the bus reference. In a gateway, the same isolation supports linking two domains that cannot share a common ground. The 16-pin SOIC package is also useful for designs that need a compact, surface-mount implementation without a high-speed differential connector.
Designers should treat the ISO1042DWR as a bus-interface component and pay close attention to decoupling, termination, isolation-capacitor placement, and the difference between logic-side and bus-side supplies. The available verified web results provide the device identity, package, temperature range, data-rate capability, logic voltage range, and protection class, but they do not provide a complete pin-by-pin electrical table or detailed pricing for every quantity break. Those fields are marked accordingly rather than being inferred.
Alternativas directas para ISO1042DWR — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con ISO1042DWR (mismo factor de forma y huella) — difiere en Package, Protocol, Isolation Voltage, Operating Temperature, Bus Fault Protection.
ISO1042BDWR
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Ver hoja de datos →ISO1042DWR Especificaciones
| Product Type | Isolated CAN transceiver |
| Bus Fault Protection | 70 V |
| Maximum Data Rate | 5 Mbps |
| Logic Supply Voltage Range | 1.8 V to 5.5 V |
| Isolation Rating | Basic and reinforced |
| Working Isolation Voltage | 1060 Vrms |
| Surge Isolation Voltage | 6000 VPK |
| Encapsulado | 16-pin SOIC (DW) |
| Tipo de montaje | Surface Mount |
| Rango de temperatura de funcionamiento | -40 °C to +125 °C |
| CAN Interface Type | 1/1 transceiver, half CAN bus |
| Data Rate Support | Flexible data rate |
| Isolation Function | Galvanic isolation between logic and bus sides |
| Bus Protection | 70-V bus fault protection |
| Manufacturer Product Page | Texas Instruments ISO1042 |
| Reference Price at LCSC | $1.5703 as of 2026-10-29 |
| Starting Price at FindMyChip | $1.47 as of 2026-10-29 |
Guía de configuración de pines de ISO1042DWR 16-pin soic (dw)
Configuración de pines para ISO1042DWR (encapsulado 16-pin soic (dw)). La numeración de pines, las funciones y los diagramas de conexión se definen en la hoja de datos del fabricante. Consúltela para conocer el footprint exacto y las directrices de soldadura.
No hay datos detallados de patillaje disponibles para ISO1042DWR.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
ISO1042DWR es adecuado para 6 aplicacións: Industrial Automation CAN Networks, Electric Vehicle and Motor Control Modules, Robotics and Motion-Control Systems, Building Control and HVAC Gateways, Battery-Management and Charger Systems, Distributed Sensor and Telemetry Networks.
Industrial Automation CAN Networks
The ISO1042DWR fits industrial CAN nodes that require a protected bus interface and reinforced isolation between the controller and field wiring. Its 70-V bus fault protection helps tolerate fault conditions encountered on longer plant cabling, while the 5-Mbps flexible data rate supports both conventional CAN traffic and higher-speed communication where the complete network is designed for it. The device is placed between the CAN controller or MCU and the CANH/CAN bus, with termination applied at the physical ends of the bus. The 16-pin SOIC package supports compact surface-mount assembly, but the isolation barrier and bus-side return paths require careful layout.
Recomendado
Electric Vehicle and Motor Control Modules
The ISO1042DWR is useful in motor-control and vehicle electronics modules where the CAN bus may be electrically separated from a low-voltage control domain. The 70-V bus fault protection is relevant to automotive-style transient exposure, while the -40 °C to +125 °C range supports temperature-conditioned equipment. The transceiver handles the physical CAN layer only, so the host processor must manage arbitration, message timing, and fault reporting. A reinforced isolation barrier helps keep the logic-side reference separate from the vehicle or motor-drive return, provided the PCB layout follows TI isolation guidance.
Recomendado
Robotics and Motion-Control Systems
The ISO1042DWR can provide the isolated CAN link in robot controllers, servo amplifiers, and motion-control nodes where motor drives and safety systems are connected over a shared bus. Flexible data-rate operation up to 5 Mbps gives designers a common interface for coordinating command, status, and diagnostic traffic. The bus-side protection of 70 V improves robustness in installations where cabling may pick up larger transients than a logic-level network. Because the ISO1042DWR does not include protocol handling, it should be paired with a capable MCU or dedicated CAN controller, and the bus termination must be implemented correctly.
Recomendado
Building Control and HVAC Gateways
The ISO1042DWR is appropriate for building-control and HVAC gateways that connect a low-voltage controller to a field-bus network without sharing a common ground. Its reinforced isolation rating helps separate the logic and bus domains, while 70-V bus fault protection improves tolerance of connected cabling in industrial buildings. The 5-Mbps maximum rate supports high-bandwidth CAN traffic when the complete bus is properly terminated and the controller is configured for the selected rate. The 16-pin SOIC format allows the interface to be placed near a terminal block, with the isolation barrier and bus-side transient protection arranged to minimize surge current paths.
Recomendado
Battery-Management and Charger Systems
The ISO1042DWR can be used in battery-management or charger subsystems that communicate over an isolated CAN link between a supervisory controller and a power-conversion module. The isolation barrier helps prevent the power-stage reference from disturbing low-level control circuitry, and the 70-V bus fault protection supports a more robust field interface. Flexible data-rate operation allows the same physical transceiver approach to cover different CAN timing requirements across a product family. The host MCU still needs CAN protocol support, and the layout must keep the bus-side surge current away from sensitive logic and isolation components.
Recomendado
Distributed Sensor and Telemetry Networks
The ISO1042DWR supports distributed sensor and telemetry nodes that need a physically separated CAN interface between a sensor controller and remote bus wiring. Its 70-V bus fault protection is helpful for long cable runs and industrial environments, while the 5-Mbps flexible data rate allows the same interface to support both routine status frames and higher-rate diagnostic data. The 16-pin SOIC package keeps the transceiver compact for small remote modules. Firmware must implement the CAN protocol, filtering, and error management; the transceiver itself only provides the physical bus interface and isolation function.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para ISO1042DWR — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | ISO1042BDWR |
|---|---|---|
| Package | SOIC-16 (DW) | SOIC-16 (DW) - same package class |
| Brand | Texas Instruments | Texas Instruments |
| Function | Isolated CAN transceiver | Isolated CAN transceiver |
| Maximum Data Rate | 5 Mbps | 5 Mbps |
| Logic Supply Voltage | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +125 °C |
Diferenciadores clave
- 70-V bus fault protection in the same ISO1042 family (frente a ISO1042BDWR)
- 5-Mbps flexible data-rate capability (frente a ISO1042BDWR)
- 16-pin SOIC DW implementation (frente a ISO1042BDWV)
Notas de diseño
Place the logic-side and bus-side decoupling capacitors close to their respective device supply pins, with the shortest possible return paths. Keep the isolation barrier free of high-current bus return routing and route bus-side surge currents directly to the protective network. For a 16-pin SOIC implementation, verify the exact pin assignments and recommended capacitor locations against the TI ISO1042 datasheet before releasing the PCB.
CAN bus signal integrity depends on correct termination, controlled stub lengths, and a continuous return path. Install the two 120-ohm termination resistors only at the physical ends of the main bus, and avoid unnecessary long branches from the ISO1042DWR. The 5-Mbps capability does not remove the need for clean PCB layout; excessive stubbing, poor return continuity, or incorrect termination can cause errors even when the transceiver itself is within specification.
Do not substitute an 8-pin ISO1050 or an 8-pin ISO1042BDWV variant without checking the pin mapping. The verified TI E2E support result states that ISO1050 is not pin-to-pin compatible with ISO1042 because RXD and TXD are swapped in the relevant SOIC-8 comparison. Confirm the device suffix, package, isolation rating, and logic voltage before approving a substitution.
Información de cumplimiento
The verified search results identify RoHS and REACH as comparison topics for ISO1042BDWR versus ISO1042DWR but do not state the compliance result for ISO1042DWR. AEC-Q100 qualification, lead-free status, halogen-free status, and conflict-minerals status were not provided and must be confirmed from the manufacturer documentation.