LAN9353TI/PT - 3-Port Managed Ethernet Switch | Microchip
MPN： LAN9353TI/PT ✓ 啟用中LAN9353TI/PT 概覽
A managed Ethernet switch is an integrated networking component that connects multiple Ethernet endpoints through internal forwarding paths while providing controlled access to switch functions. In the broader product hierarchy, it belongs to Ethernet interface controllers, then network interface ICs, then integrated circuits used within embedded networking and industrial control systems.
The primary features of the LAN9353 family include three managed Ethernet ports, 10/100 Base-T/TX physical-layer interfaces, and an I2C configuration interface. The manufacturer describes the family as optimized for consumer, embedded, and industrial electronic designs that require a highly integrated, cost-effective Ethernet switching solution. Its 10 x 10 mm TQFP package supports compact surface-mount construction.
The LAN9353 architecture consolidates multiple 10/100 Ethernet ports, a managed switching function, and configuration access into one device. This integration can reduce the number of separate Ethernet interface components required in an embedded controller or industrial equipment design. The I2C interface provides a straightforward host-control path for configuring operating parameters and managing switch behavior from firmware.
Typical uses include industrial controllers, embedded computing modules, consumer networking equipment, and systems requiring multiple Fast Ethernet connections. The integrated 10/100 Base-T/TX transceivers are suited to links operating at 10 Mb/s or 100 Mb/s, allowing one switch device to serve several local Ethernet nodes without requiring a separate PHY for every port.
PCB design should preserve the exposed-pad land pattern and provide adequate thermal and layout continuity beneath the package. Follow the Microchip datasheet pin-description table, recommended decoupling network, and reference layout when assigning tracks. The I2C interface also requires correct pull-up implementation and signal-level compatibility with the host controller.
This product summary combines the manufacturer's device positioning, interface and package details with practical selection guidance. It also distinguishes LAN9353-family options, identifies the information needed for drop-in sourcing, and highlights the design checks that matter when integrating a managed Ethernet switch into an embedded or industrial platform.
直接替換替代品，適用於 LAN9353TI/PT — 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： LAN9353TI/PT （相同外形與佔位） — 差異在於 Ethernet Speed, Package, Product Type, Host Interface, Number of Ports.
LAN9353I/PT
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →LAN9353/PT
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →LAN9353TI/PT 最大額定值與電氣特性
| Product Type | 3-port managed Ethernet switch |
| Number of Ethernet Ports | 3 ports |
| Ethernet Speed | 10/100 Mb/s per port |
| Physical Layer Interface | 10/100 Base-T/TX PHY |
| Host Configuration Interface | I2C |
| 封裝 | 64-lead TQFP-EP, 10 x 10 mm |
| 安裝類型 | Surface mount |
| Integrated PHY Count | 3 integrated 10/100 PHYs |
| Switch Management | Managed switching |
| Application Segment | Consumer, embedded, and industrial electronics |
| Maximum Data Rate | 100 Mb/s per port |
LAN9353TI/PT 64-lead tqfp-ep, 10 x 10 mm 腳位配置指南
LAN9353TI/PT（64-lead tqfp-ep, 10 x 10 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： LAN9353TI/PT.
請參閱 資料表 以查看完整腳位配置。
典型應用
LAN9353TI/PT 適用於 6 應用s: Industrial Ethernet Controller, Embedded Computing Module, Consumer Network Appliance, Industrial IoT Gateway, Data Acquisition System, Networked Motor Controller.
Industrial Ethernet Controller
The LAN9353TI/PT fits an industrial controller that must connect local sensors, HMIs, service equipment, or remote I/O modules over Fast Ethernet. Its three 10/100 Mb/s ports provide a compact switching solution without requiring three separate Ethernet interface devices. The managed-switch architecture gives the host processor a structured way to administer local links through I2C, while the 64-lead TQFP exposed-pad package supports dense control-board layouts. Ethernet magnetics, surge protection, connector creepage, and grounding still require careful implementation according to the target installation environment and the manufacturer reference design.
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Embedded Computing Module
The LAN9353TI/PT is useful in embedded computing modules that need to expose several wired Ethernet connections through one compact controller. Each of the three integrated 10/100 Base-T/TX ports supports 10 Mb/s or 100 Mb/s operation, making the switch suitable for management traffic, data acquisition, and local service connections. Its I2C management interface can be shared with an embedded processor, allowing firmware to access switch registers. Board implementation should follow the manufacturer pin-description table and reference layout, particularly around the exposed pad, I2C pull-ups, clocking, and PHY routing to the Ethernet connectors.
推薦
Consumer Network Appliance
The LAN9353TI/PT can support compact consumer network appliances requiring three Fast Ethernet service ports in a small surface-mount footprint. The integrated 10/100 PHYs reduce the number of external network-interface components, while managed switching supports orderly port administration by an embedded host. A design of this type can use the device for local synchronization, media distribution, or configuration connectivity. Firmware must implement the required switch configuration and startup sequence through I2C, and the PCB should follow the manufacturer layout guidance to preserve Ethernet signal quality and thermal performance.
推薦
Industrial IoT Gateway
The LAN9353TI/PT suits an IoT gateway that bridges wired Fast Ethernet devices to a higher-level communications processor. Three 10/100 Mb/s ports allow local sensors, programmable controllers, and service equipment to share one compact managed switching component. The I2C interface provides a straightforward management path for firmware configuration, status monitoring, and link administration. For field-installed equipment, validate the operating-temperature and environmental requirements against the exact device documentation, provide robust Ethernet magnetics and surge protection, and keep sensitive routing aligned with the manufacturer's recommended layer stack and layout.
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Data Acquisition System
The LAN9353TI/PT can provide network connectivity for a compact data-acquisition system containing multiple measurement modules or remote instrument controllers. The three managed 10/100 ports are appropriate for aggregating Fast Ethernet telemetry while offering more integration than separate PHY devices. An embedded host can configure the switch through its I2C interface and use the managed functions to support predictable local communication. The design must observe electrical limits and operating-temperature specifications from the manufacturer datasheet, and Ethernet trace routing should follow the reference layout to minimize insertion loss, crosstalk, and radiated emissions.
推薦
Networked Motor Controller
The LAN9353TI/PT can add wired networking to a motor-control platform that must expose a maintenance interface, tuning console, and sensor network. Its three 10/100 Mb/s ports allow those functions to share a local switched Ethernet segment, while I2C gives the motor-control MCU access to switch configuration and status. The compact 10 x 10 mm package leaves room for control and power components around the communications section. In this environment, verify the exact temperature range and isolation strategy, provide magnetics rated for the installation, and keep switching-node and high-current power routing separated to reduce noise coupling.
推薦
推薦產品摘要
工程參考資料，適用於 LAN9353TI/PT — 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 | LAN9353I/PT | LAN9353/PT |
|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-TQFP-EP (10 x 10 mm) | 64-TQFP-EP (10 x 10 mm) | 64-TQFP-EP (10 x 10 mm) |
| Ethernet Port Count | 3 ports | 3 ports | 3 ports |
| Supported Speed | 10/100 Mb/s per port | 10/100 Mb/s per port | 10/100 Mb/s per port |
| Physical Layer | Integrated 10/100 Base-T/TX PHY | Integrated 10/100 Base-T/TX PHY | Integrated 10/100 Base-T/TX PHY |
| Host Configuration Interface | I2C | I2C | I2C |
| Switch Management | Managed Ethernet switch | Managed Ethernet switch | Managed Ethernet switch |
| Package Body Size | 10 x 10 mm | 10 x 10 mm | 10 x 10 mm |
| Primary Application Segments | Consumer, embedded, and industrial electronics | Consumer, embedded, and industrial electronics | Consumer, embedded, and industrial electronics |
主要差異化特點
- Combines three managed Fast Ethernet ports in one 10 x 10 mm device (對比KSZ8041TL-TR)
- Provides switch management and an I2C host-control path (對比KSZ8721SL-TR)
- Supports multiple wired endpoints on one compact switch footprint (對比LAN9313-NU-TR)
設計說明
Follow the Microchip LAN9353 reference layout for the 64-lead TQFP exposed pad, decoupling capacitors, clock source, I2C pull-ups, and PHY routing. Keep the exposed-pad land connected to the recommended ground-plane structure, place input and output capacitors close to their associated pins, and preserve short return paths. Do not substitute generic Ethernet routing rules for the package-specific pin and layout guidance in the manufacturer datasheet.
Route each 10/100 Ethernet channel as a controlled-impedance differential pair from the LAN9353 PHY pins toward the transformer or magnetics module. Avoid vias and stubs where possible, maintain consistent pair spacing, and keep the media interface away from noisy switching and motor-power nodes. The three channels should follow equivalent geometry because differences in length or return-path discontinuity can create unequal insertion loss and crosstalk behavior.
Do not treat the shared 64-lead TQFP outline as proof that every LAN9353 ordering code is a drop-in replacement. Before substitution, compare the exact host interface, management registers, initialization sequence, strap requirements, clocking, temperature grade, and exposed-pad connection. In particular, confirm I2C address and pull-up requirements in firmware and hardware, because an address or bus-timing mismatch can prevent the host from configuring the switch.
Treat the exposed pad as both a package electrical feature and a thermal path. Implement the manufacturer-recommended pad and via geometry, provide a continuous low-impedance plane connection, and use the PCB stack-up specified for thermal evaluation. Estimated: the device dissipation must be calculated from the actual supply voltage, port activity, and measured switching loss before assigning copper area; those operating values are not established by the package outline alone.
合規資訊
Compliance declarations are not stated in the cited product-page snippets. Confirm RoHS, REACH, lead-free, halogen-free, conflict-minerals, and automotive qualification status using the exact ordering code and current Microchip documentation before production release.
