LAN9353T/PT - 3-Port 10/100 Ethernet Switch | Microchip
MPN: LAN9353T/PT ✓ NakahandaLAN9353T/PT Ulas
An Ethernet switch is a network-interface integrated circuit that connects multiple Ethernet ports and manages frame forwarding between local devices. The LAN9353 belongs to the controller and interface-IC hierarchy, combining multiple 10/100 Ethernet PHYs, switching functions, and host-control connectivity in one package. This integration reduces the component count required for a small Ethernet switching subsystem while supporting embedded network management through I2C.
Key features include three 10/100 Base-T/TX ports, managed-switch operation, an I2C interface, and a compact 64-TQFP-EP package. The 10 mm by 10 mm package uses a 0.5 mm terminal pitch and has a maximum seated height of 1.2 mm. These package characteristics make the device suitable for space-constrained embedded products where discrete Ethernet-interface components would be impractical.
The LAN9353 is designed to provide Ethernet connectivity for embedded consumer, industrial, and communications systems. Its integrated 10/100 Base-T/TX PHY interfaces support copper Ethernet connections, while the managed-switch architecture supports controlled forwarding rather than operating only as a basic repeater. The I2C interface provides a means for an embedded host or system controller to access device functions, although detailed register procedures must be confirmed in the manufacturer datasheet and associated documentation.
Typical applications include industrial control systems, embedded instrumentation, network-connected test equipment, and compact consumer networking products. In these systems, the switch can provide multiple Ethernet ports to local sensors, controllers, computers, or service interfaces. Design decisions should account for the manufacturer reference design, magnetics requirements, termination, clocking, supply sequencing, and the exposed-pad layout before PCB signoff.
The most important layout consideration is thermal and power integrity around the 64-pin TQFP-EP package. Place all decoupling capacitors close to their associated supply pins, provide an uninterrupted ground plane, and follow the exposed-pad land pattern and thermal-via recommendations in the manufacturer documentation. Preserve the specified differential-pair geometry for each 10/100 Ethernet channel and validate magnetics isolation and return-path continuity in the final board stack-up.
This page combines verified manufacturer and distributor information with package, sourcing, selection, and design guidance. It also clearly distinguishes documented specifications from parameters that remain to be confirmed in the full LAN9353 datasheet, supporting faster component evaluation without substituting unverified electrical values.
Mga alternatibo na pwedeng ilagay na LAN9353T/PT — parehas na package, pin-to-pin na katugmang. Hindi kasama ang mga bahagi ng iba't-ibang package na nangangailangan ng pagpapaayos ng PCB.
Variante sa Seri na ito
Katulad na modelo sa serye na katugma sa pagpasok LAN9353T/PT (parehas na form factor at footprint) — pagkakaiba sa Host Interface, Number of Ports, Package, Product Type.
LAN9353/PT
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →LAN9353I/PT
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →LAN9353T/PT Mga Pinakamataas na Rating at Electrical Characteristics
| Product Type | Managed Ethernet switch controller |
| Number of Ports | 3 ports |
| Ethernet Speed | 10/100 Mbps |
| Physical Layer | 10/100 Base-T/TX PHY |
| Host Interface | I2C |
| Packhaging | 64-TQFP-EP (10 mm x 10 mm) |
| Bilang ng Pin | 64 pins |
| Terminal Pitch | 0.5 mm |
| Maximum Seated Height | 1.2 mm |
| Uri ng Pagpapasok | Surface mount |
| Terminal Form | Gull wing |
| Case Shape | Square |
| Hanay ng Temperature na Operasyon | 0°C to 70°C |
Gabay sa Pin Configuration ng LAN9353T/PT square
Pin configuration para sa LAN9353T/PT (square package). Ang pagnunumero ng pin, mga function, at connection diagram ay tinukoy sa datasheet ng manufacturer. Sumangguni dito para sa eksaktong footprint at mga alituntunin sa soldering.
Wala ng detalyadong pinout data na magagamit para sa LAN9353T/PT.
Sumangguni sa datasheet para sa buong pin configuration.
Tipikal na mga Gamit
LAN9353T/PT ay nararapat para sa 6 aplikasyons: Embedded Industrial Control, Connected Test and Measurement Equipment, Networked Sensors and IoT Gateways, Consumer Network Appliances, Industrial Communication Hubs, Automotive and Building Network Equipment.
Embedded Industrial Control
The LAN9353T/PT fits compact industrial controllers that need three 10/100 Base-T/TX Ethernet connections without implementing three separate interface subsystems. Its managed-switch architecture provides local frame-forwarding functions, while I2C access allows an embedded host to configure or monitor the device. The verified 0°C to 70°C range is appropriate for many indoor commercial-temperature control cabinets. Designers should confirm supply voltage, reference-clock requirements, magnetics, and the exposed-pad footprint in the manufacturer documentation before schematic release.
Inirekomenda
Connected Test and Measurement Equipment
The LAN9353T/PT can consolidate three 10/100 Ethernet links in instruments that must communicate with a host, external fixture, and service interface. The managed-switch function is useful where several endpoints share limited physical connectors, and I2C gives the instrument controller a low-pin-count management path. The 10 mm by 10 mm TQFP-EP footprint supports compact instrument boards, although the exposed pad must be connected to a suitable ground and thermal-via structure. Ethernet-channel layout and magnetics selection remain board-level responsibilities.
Inirekomenda
Networked Sensors and IoT Gateways
For IoT gateways, the LAN9353T/PT offers three copper Ethernet ports in a compact 64-pin surface-mount package, allowing local sensors or controllers to reach a backbone network through managed switching. The I2C interface is suitable for configuration by a host processor, while 10/100 Mbps operation aligns with many low-bandwidth industrial sensors and embedded devices. Because the verified range is 0°C to 70°C, the enclosure must control temperature or use an appropriately rated variant. Verify startup, clocking, and Ethernet-magnetics requirements in the reference design.
Inirekomenda
Consumer Network Appliances
The LAN9353T/PT is suitable for compact consumer networking products requiring three managed 10/100 Ethernet ports, such as media bridges, smart-home controllers, and embedded network appliances. Its integration reduces the PCB area needed for multiport copper networking, while I2C provides a simple control path for a host processor. The commercial 0°C to 70°C range suits indoor products. Final qualification should include enclosure temperature, Ethernet isolation, ESD design, power sequencing, and the manufacturer’s recommended high-speed layout practices.
Inirekomenda
Industrial Communication Hubs
The LAN9353T/PT can serve as the switching element in a compact industrial communication hub that connects programmable controllers, remote I/O, and a supervisory network. Three managed 10/100 ports provide a practical alternative to several discrete Ethernet interfaces, and the I2C management interface supports board-level configuration. Designers should treat Ethernet cable isolation, surge protection, reference-clock distribution, and power integrity as critical implementation details. The verified operating range permits indoor 0°C-to-70°C installations, but extended-temperature sites require a more suitably rated device.
Inirekomenda
Automotive and Building Network Equipment
LAN9353T/PT can support network-interface sections of building controls and non-automotive vehicle accessories where three 10/100 Ethernet links are useful and environmental conditions remain within 0°C to 70°C. The managed-switch function supports controlled local traffic forwarding, and I2C allows a supervisory controller to access device configuration. Automotive qualification must not be inferred from this ordering code: the verified excerpts do not state AEC-Q100 qualification. Confirm environmental ratings, isolation, functional safety, and lifecycle requirements separately before using the device in safety-relevant or harsh installations.
Inirekomenda
Buod ng mga Inirekomendang Produkto
Impormasyon ng Talumpati sa Engineering for LAN9353T/PT — ikabit, gabay sa disenyo, at impormasyon ng pagsunod sa kautusan.
Paunawang Hanapin
Ikabit sa Mga Alternatibo
| Parametro | Ito ang Producto | LAN9353/PT | LAN9353I/PT |
|---|---|---|---|
| Package | 64-TQFP-EP (10 mm x 10 mm) | 64-TQFP-EP (10 mm x 10 mm) | 64-TQFP-EP (10 mm x 10 mm) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology |
| Port Count | 3 ports | 3 ports | 3 ports |
| Ethernet Speed | 10/100 Mbps | 10/100 Mbps | 10/100 Mbps |
| Pin Count | 64 pins | 64 pins | 64 pins |
Pangunahing mga Pagkakaiba
- Integrated three-port managed switching in one package (kumpara saLAN9353/PT)
- Compact 10 mm by 10 mm surface-mount implementation (kumpara saLAN9353I/PT)
- Dedicated I2C host-management interface (kumpara saLAN9353/PT)
Talaan ng Disenyo
Use the manufacturer's 64-TQFP-EP land pattern and exposed-pad via array rather than creating a generic TQFP footprint. Keep the exposed-pad connection to ground low-impedance and place supply decoupling close to the relevant pins. The supplied excerpts do not identify individual supply pins, so the capacitor placement and ground-plane construction must be completed from the official datasheet and reference design.
Preserve continuous reference planes beneath each 10/100 Ethernet differential pair and minimize stubs, vias, and unnecessary layer transitions. Match the pair geometry specified by Microchip for the selected board stack-up. Confirm whether the design requires external Ethernet magnetics and follow the manufacturer guidance for trace spacing around isolation barriers, magnetics, and the board edge.
Do not select the supply voltage or bulk-capacitor values from general Ethernet-switch experience; the verified excerpts do not provide those values. Check the LAN9353 datasheet for input rails, tolerance, sequencing, current limits, and power-up behavior. Place local high-frequency bypass capacitors next to their pins and validate startup across worst-case load and temperature conditions.
Do not interpret the 3-port description as proof that every board implementation supports three simultaneous cable connections without external magnetics and the correct reference clock. The verified material identifies integrated 10/100 Base-T/TX PHYs but omits the clock, magnetics, and timing requirements. Resolve these omissions from the official datasheet, errata, and reference design before release.
Impormasyon ng Pagsunod sa Kautusan
The verified excerpts do not provide RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations. Automotive qualification must not be inferred from the product family or ordering code.
