TMC2084-HT - 3.3V 48-TQFP CircLink Controller | Microchip
MPN： TMC2084-HT ✓ 啟用中TMC2084-HT 概覽
A CircLink controller is a semiconductor interface device that extends controller-area network communication to remote I/O nodes. In a token-passing network, one node holds the token and communicates in a defined order, reducing simultaneous transmission contention. The TMC2084 therefore sits between a host node and distributed I/O devices, helping organize network traffic while exposing local control and status information to the host.
The TMC2084-HT operates from a 3.3 V low-power CMOS supply and provides 5 V tolerant I/O, allowing it to interface with external circuitry whose logic levels exceed the core supply. The enhanced token-passing protocol supports up to 15 nodes per network according to the verified data. A token-retry mechanism and consecutive node-ID assignment help the controller recover after communication interruptions and organize network participants.
The controller supports 64-byte or 128-byte packets, providing a choice between communication efficiency and payload granularity. Its parallel interface makes it suitable for systems where the controller is connected to a host processor or dedicated interface logic. The 48-TQFP package is a surface-mount, fine-pitch package suitable for industrial and embedded control equipment.
Typical applications include industrial automation equipment, factory monitoring systems, distributed data-acquisition modules, remote I/O racks, building-control equipment, and embedded test systems. In these systems, the TMC2084 can organize token-based communication between a host controller and remote I/O nodes, reducing the need for a dedicated processor at every node.
Designers should verify the exact pin assignments, clocking, reset, interface timing, and electrical limits against the Microchip TMC2084 manufacturer datasheet before layout. Because the available search results provide only a subset of the complete electrical and timing data, values not explicitly present in the verified sources are marked for data completion rather than inferred.
直接替換替代品，適用於 TMC2084-HT — 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： TMC2084-HT （相同外形與佔位） — 差異在於 Package.
此產品無可直接替換的替代品。
申請替代品TMC2084-HT 規格
| Product Type | Standalone-mode CircLink controller and intelligent remote I/O controller |
| 供應電壓 | 3.3 V |
| CAN Data Rate | 5 Mbps |
| I/O Logic Tolerance | 5 V tolerant I/O |
| Network Topology | Enhanced token-passing protocol from ARCNET |
| Maximum Nodes per Network | 15 nodes |
| Token Retry Mechanism | Supported |
| Packet Size | 64 bytes or 128 bytes per packet |
| Node Addressing | Consecutive node ID assignment |
| Host Relationship | Works with host node TMC2074 or TMC2072 |
| 介面類型 | Parallel interface |
| 封裝 | 48-pin TQFP, 7 mm × 7 mm |
| 安裝類型 | Surface mount |
| Process Technology | Low-power CMOS |
TMC2084-HT 48-pin tqfp, 7 mm × 7 mm 腳位配置指南
TMC2084-HT（48-pin tqfp, 7 mm × 7 mm 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： TMC2084-HT.
請參閱 資料表 以查看完整腳位配置。
典型應用
TMC2084-HT 適用於 6 應用s: Industrial Automation Control, Distributed Remote I/O, Factory Monitoring Systems, Building and Facility Control, Embedded Test and Measurement, Process and Machine Control.
Industrial Automation Control
The TMC2084-HT fits distributed industrial automation systems where a host controller must communicate with multiple remote I/O nodes. Its enhanced token-passing protocol organizes network access, while support for up to 15 nodes allows a single network to cover several controlled endpoints. The 3.3 V CMOS supply and 5 V tolerant I/O are useful when interfacing the controller with external logic. The 5 Mbps CAN connection should be paired with the appropriate transceiver and verified against the system’s cable, termination, timing, and environmental requirements.
推薦
Distributed Remote I/O
TMC2084-HT is designed for intelligent remote I/O arrangements in which a host node coordinates peripheral modules over a token-passing network. Consecutive node-ID assignment helps organize participating devices, and the token-retry mechanism supports controlled recovery after communication interruptions. The 64-byte and 128-byte packet options allow the system designer to match transaction size to the application. For equipment requiring many nodes, long cables, or isolated field wiring, the interface transceiver and power architecture must be selected separately from the TMC2084-HT.
推薦
Factory Monitoring Systems
The TMC2084-HT can support factory monitoring systems that collect status information from distributed sensors, switches, and actuators. Token passing provides an ordered communication method for remote nodes, while the parallel interface allows the controller to connect with host-side digital logic. A 5 Mbps CAN link can provide a responsive communication path when the physical layer is implemented correctly. Designers should budget for transceiver protection, grounding, surge handling, and fault recovery rather than treating the controller IC as a complete field-bus solution.
推薦
Building and Facility Control
TMC2084-HT is applicable to building-control equipment requiring centralized control of remote lighting, HVAC, access, or environmental-monitoring nodes. The controller’s token-passing architecture helps manage deterministic access among a bounded group of nodes, and its 3.3 V core operation fits modern embedded control platforms. The 5 V tolerant I/O capability simplifies connection to suitable external logic, but system designers must still verify voltage levels, isolation requirements, EMC behavior, and environmental limits before deployment in building equipment.
推薦
Embedded Test and Measurement
The TMC2084-HT can be used in embedded test systems that distribute measurement or control functions across multiple remote modules. The host node can coordinate the remote I/O controllers through the enhanced token-passing protocol, and selectable 64-byte or 128-byte packets provide flexibility for different data volumes. The 5 Mbps CAN connection is useful for responsive control traffic, but instrument-grade designs should also address calibration, grounding, analog isolation, and timing margins beyond the controller’s digital specifications.
推薦
Process and Machine Control
TMC2084-HT can serve as part of a process-control network when a host node needs to coordinate multiple remote I/O points. The bounded 15-node network and token-retry behavior provide a defined communication structure, while the parallel interface supports connection to control logic. The controller itself is a digital interface component, so motor drives, relays, sensors, safety interlocks, and actuators require separate external circuitry. The final design must verify timing, fault containment, and environmental requirements for the target machine.
推薦
推薦產品摘要
工程參考資料，適用於 TMC2084-HT — 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 |
|---|---|
| Package | 48-pin TQFP, 7 mm × 7 mm |
| Brand | Microchip Technology |
| Supply Voltage | 3.3 V |
| I/O Tolerance | 5 V tolerant I/O |
| CAN Data Rate | 5 Mbps |
| Network Nodes | Up to 15 nodes |
| Packet Size | 64 bytes or 128 bytes |
| Interface | Parallel interface |
| Protocol | Enhanced token passing from ARCNET |
主要差異化特點
- Purpose-built standalone-mode CircLink controller (對比Generic interface-controller alternatives)
- Designed for distributed token-passing networks (對比TMC208KB5C)
- 3.3 V core with 5 V tolerant I/O (對比THS0842IPFB)
設計說明
Use the official Microchip TMC2084 package drawing and land pattern for the 48-pin TQFP before routing. The verified source identifies the package as 7 mm × 7 mm, but it does not provide the complete pin assignment or recommended footprint in the supplied excerpts. Confirm pin 1 orientation, exposed-pad or thermal-pad requirements, and clearance against the exact datasheet revision before fabrication.
Design the 3.3 V supply and I/O reference rails independently. The controller is specified as low-power CMOS with 5 V tolerant I/O, so do not assume that every external pin may safely tolerate 5 V. Review the manufacturer’s absolute maximum ratings, input thresholds, output drive, and power sequencing requirements before connecting field-side logic.
The verified data identifies a 5 Mbps CAN connection, but the TMC2084-HT is not a complete physical-layer network device. Select and place the required CAN transceiver, protection components, termination, grounding, and isolation according to the system topology. Validate rise time, reflections, common-mode range, and recovery behavior on the actual board rather than relying only on the controller’s nominal data rate.
Do not treat a similarly named TMC2084 variant as a drop-in replacement without checking the exact ordering code. The provided comparison material names TMC2084-MT, but it does not establish identical pinout, temperature grade, qualification, or timing. Review the Microchip ordering guide and exact datasheet before changing the BOM or reusing an existing PCB.
合規資訊
The supplied search snippets identify a low-profile fine-pitch TQFP package and RoHS-related classification data in one comparison result, but do not provide authoritative compliance statements for TMC2084-HT. Compliance fields remain unknown rather than inferred.
