TCAN4420DR - 5V High-Speed CAN Transceiver | Texas Instruments
料号： TCAN4420DR ✓ 量产中TCAN4420DR 概述
A CAN transceiver is an interface IC within the broader physical-layer transceiver category. It converts digital transmit and receive signals used by a CAN controller into the differential dominant and recessive states carried over a CAN bus. The TCAN4420DR belongs to the CAN interface IC hierarchy, connecting automotive and industrial communication controllers to a robust two-wire network while protecting the controller-side circuitry from bus-side electrical stress.
The verified product information identifies support for supply voltages from 2.8 V to 5 V, an externally controlled SW polarity function, and compliance with ISO 11898-2 (2016). The TCAN4420DR is listed as a single-channel, half-CAN-bus transceiver in an 8-pin SOIC package. These characteristics make it suitable for embedded CAN nodes that require standard high-speed physical-layer behavior and firmware-level polarity management.
Texas Instruments describes the TCAN4420 as providing multiple protection features for device and CAN-network robustness. In practice, the key engineering considerations are correct bus termination, a continuous CANH and CANL return path, a common reference between isolated or separated bus nodes, and careful transceiver supply decoupling. The SW control pin should be managed so that polarity changes occur only when bus activity permits the state transition.
Typical applications include industrial automation equipment, automotive electronic control units, robotics controllers, building automation systems, diagnostic interfaces, and embedded communications modules. The broad 2.8 V to 5 V supply range supports both 3.3 V and 5 V system architectures, provided the selected external components and bus protection strategy satisfy the network requirements.
When designing around the TCAN4420DR, place input and output bypass capacitors close to the device and route CANH and CANL as a closely coupled differential pair. Avoid long stubs, maintain the intended 120 ohm termination only at the physical endpoints of the bus, and validate common-mode voltage, ground continuity, and node-count limits in the complete network.
This page consolidates verified manufacturer and distributor information, same-package replacement candidates, interface-use guidance, and practical bus-layout considerations. It separates confirmed facts from values that still require confirmation from the complete manufacturer datasheet, helping engineers plan sourcing and hardware reviews without relying on unsupported assumptions.
直接替换替代料： TCAN4420DR ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： TCAN4420DR （相同外形与封装尺寸） ——差异在于 Product Type, Package, Bus Interface, Supply Voltage Range.
MCP2551T-E/SN
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查看数据手册 →TCAN4420DR 规格参数
| Product Type | High-speed CAN bus transceiver |
| CAN Standard | ISO 11898-2 (2016) |
| Supply Voltage Range | 2.8 V to 5 V |
| Number of Channels | 1 channel |
| Bus Interface | Half CANbus |
| Polarity Control | External control through the SW pin |
| 封装 | 8-pin SOIC |
| 安装类型 | Surface mount |
| Protection Features | Device and CAN network protection features |
TCAN4420DR 8-pin soic 引脚配置指南
TCAN4420DR（8-pin soic 封装）的引脚配置。 引脚编号、功能和连接图在制造商数据手册中定义。请参阅该手册以了解确切的封装尺寸和焊接指南。
暂无详细引脚数据： TCAN4420DR.
请参阅 数据手册 以查看完整引脚配置。
典型应用
TCAN4420DR 适用于 6 应用s: Industrial Automation CAN Nodes, Automotive Electronic Control Units, Robotics Controller Communications, Building Automation Equipment, Diagnostic and Test Equipment, Embedded CAN Communication Modules.
Industrial Automation CAN Nodes
The TCAN4420DR fits industrial automation nodes that communicate over a Controller Area Network while operating from 2.8 V to 5 V. Its single-channel 8-pin SOIC implementation provides the physical-layer interface between a CAN controller and the differential CANH and CANL conductors. The externally controlled SW pin adds a deliberate polarity-management resource for firmware-based diagnostics. Layout should preserve a tight CANH/CANL pair, solid ground continuity, and termination only at bus endpoints.
推荐
Automotive Electronic Control Units
The TCAN4420DR is appropriate for CAN-based automotive electronic control units where a controller needs ISO 11898-2 (2016) physical-layer behavior and external polarity control. Its 2.8 V to 5 V supply range accommodates common automotive electronics power domains, although the verified data does not establish AEC-Q100 status or the operating-temperature range. Production selection therefore requires those qualifications plus transient immunity, ground-offset, and fault-injection validation before release.
推荐
Robotics Controller Communications
The TCAN4420DR can connect a robot controller to motors, sensors, and safety modules over a shared CAN bus. The 8-pin SOIC package supports compact controller boards, while the SW pin allows firmware to influence bus polarity where the host system requires that behavior. The design must preserve communication during transient events, so CANH and CANL routing should avoid stubs and the board should provide continuous ground paths between attached nodes.
推荐
Building Automation Equipment
The TCAN4420DR can serve as the CAN physical-layer device in building automation controllers, room-control units, HVAC equipment, and access-control panels. Its 2.8 V to 5 V operating range supports both 3.3 V and 5 V embedded platforms, while external polarity control can be coordinated by the host microcontroller. For long building networks, maintain low-impedance ground distribution, use proper endpoint termination, and verify common-mode limits against the complete transceiver datasheet.
推荐
Diagnostic and Test Equipment
The TCAN4420DR is suitable for CAN diagnostic interfaces, service tools, and programmable test equipment that need a robust physical-layer endpoint. The SW pin provides a firmware-visible mechanism for controlling bus polarity, which can support controlled diagnostic sequences. Because exact timing, fault thresholds, and data-rate limits are not present in the verified data, test-equipment engineers should confirm loopback, propagation-delay, and bus-fault behavior in the manufacturer datasheet before setting production tolerances.
推荐
Embedded CAN Communication Modules
The TCAN4420DR can provide the bus-side interface in compact embedded CAN communication modules powered from 3.3 V or 5 V. Its 8-pin SOIC package simplifies board assembly, and the SW polarity-control input adds flexibility for host-managed recovery procedures. Place the transceiver close to the connector and protection circuitry, maintain controlled impedance over CANH and CANL, and provide local supply bypassing to reduce susceptibility to conducted disturbances on external wiring.
推荐
推荐产品汇总
工程参考数据： TCAN4420DR ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | MCP2551T-E/SN | MCP2562-E/SN |
|---|---|---|---|
| Package | 8-SOIC | 8-SOIC | 8-SOIC |
| Brand | Texas Instruments | Microchip Technology | Microchip Technology |
| Product Type | CAN bus transceiver | CAN transceiver | CAN transceiver |
关键差异点
- Host-controlled bus polarity （对比 MCP2551T-E/SN)
- Cited high-speed CAN physical layer （对比 MCP2562-E/SN)
- Broad system supply compatibility （对比 MCP2551T-E/SN)
设计说明
Route CANH and CANL as a tightly coupled differential pair over the shortest practical path from the transceiver to the connector or isolation barrier. Avoid test pads, stubs, and changes in reference plane beneath the pair. If the design includes galvanic isolation, place the isolated transceiver at the bus-side edge and keep high-current return paths away from the small-signal interface area. The supplied data confirms an 8-pin SOIC package but does not provide the exact recommended layout, so the manufacturer datasheet and evaluation board should govern final spacing.
Supply the transceiver within its documented 2.8 V to 5 V range and place local bypass capacitance close to the device power and ground pins. Decoupling requirements, capacitor values, and maximum supply transients are not present in the supplied verification data, so they must be taken from the current Texas Instruments datasheet rather than estimated. Verify that the host controller, isolation components, and transceiver use compatible logic levels, and confirm the SW-pin state during reset and power ramp.
Do not treat an 8-pin SOIC package as proof of unconditional drop-in compatibility. The identified MCP2551T-E/SN and MCP2562-E/SN candidates require pin-level, timing, logic-level, standby, protection, and SW-polarity comparison before substitution. Also install termination only at the physical ends of the CAN bus, maintain common ground or an approved isolation strategy, and test dominant/recessive states, bus faults, and polarity transitions with the complete firmware and wiring harness.
合规信息
ISO 11898-2 (2016) compliance is stated by the manufacturer product page. No verified RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations were included in the supplied data.