LAN9313-NU - 3-Port 10/100 Ethernet Switch | Microchip
MPN: LAN9313-NU ✓ AktifLAN9313-NU Ringkasan
A managed Ethernet switch is a network bridge IC that interconnects multiple Ethernet segments at Layer 2, learning MAC addresses, filtering frames, and forwarding traffic with minimal host-CPU intervention. Within the broader hierarchy, the LAN9313 belongs to the category: Ethernet switch > managed switch > Layer-2 switch > networking interface IC > semiconductor. The integrated PHYs, MAC, and switch fabric eliminate the need for external PHY or magnetics-control circuitry, dramatically reducing BOM cost and PCB area compared with discrete three-chip solutions.
Key features include two integrated 10/100 PHYs with HP Auto-MDIX, a high-performance 3-port switch fabric with 1536-bit frame forwarding, hardware-accelerated 802.1Q VLAN tagging, 802.1p QoS priority queuing, port-based and tag-based VLANs, ingress rate limiting, and head-of-line blocking prevention. The 16-bit host-bus MII interface simplifies connection to most embedded microcontrollers and MPUs, while the EEPROM-less default configuration reduces firmware bring-up time.
Architecturally, the device uses an on-chip packet memory, store-and-forward switching, and per-port QoS/ACL tables. Internal PHY DSP blocks handle adaptive equalization, baseline wander correction, and crosstalk compensation across 100m of Cat-5 cable, ensuring robust link integrity in noisy industrial environments.
Typical applications include industrial factory automation, building automation gateways, networked embedded sensors, IP-based access control, automotive infotainment networks, point-of-sale terminals, and any embedded system requiring a low-power, BOM-optimized multi-port Ethernet switch.
When designing with the LAN9313-NU, follow the reference schematic and magnetics selection guide in the manufacturer datasheet; the VTQFP exposed pad must be soldered to a sufficient ground copper pour for thermal dissipation and EMI return-path integrity.
This page consolidates distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet, giving procurement and design engineers a single authoritative reference for the LAN9313-NU.
Alternatif penggantian untuk LAN9313-NU — paket yang sama, pin-pada-pin kompatibel. Bagian paket yang berbeda memerlukan kerja ulang PCB diabaikan.
LAN9303-NU
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
LAN9353-NU
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
LAN9313-NU-TR
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
LAN9313i-NU
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
LAN9313-NU Spesifikasi (diterbitkan produsen)
| Product Type | Managed 3-Port 10/100 Ethernet Switch |
| Number of Ports | 3 (2 external PHYs + 1 host/MII port) |
| Ethernet Standard | IEEE 802.3 (10BASE-T/100BASE-TX), 802.1D, 802.1Q |
| Laju Data | 10/100 Mbps |
| Duplex Mode | Full and Half Duplex |
| Host Interface | MII (16-bit), Parallel |
| Integrated PHYs | 2 (HP Auto-MDIX) |
| Switch Architecture | Store-and-Forward |
| MAC Address Table | 1K entries |
| VLAN Support | IEEE 802.1Q, port- and tag-based |
| QoS Support | IEEE 802.1p, 4 priority queues |
| Paket | 128-pin VTQFP, 14x14 mm |
| Tegangan Pemuat | 3.3 V (I/O and analog); 1.8 V or 1.2 V internal core |
| Suhu Kerja | -40C to +85C (industrial grade) |
| Tipe Mounting | Surface Mount |
| Status RoHS | Compliant |
| JEDEC Package Standard | JEDEC MS-026 compliant VTQFP |
Konfigurasi Pin LAN9313-NU
| Pin produk 1 | VDD_IO — 3.3 V I/O supply |
| Pin produk 2 | VDD_CORE — 1.8 V/1.2 V core supply |
| Pin produk 3 | GND — Ground |
| Pin produk 4 | MII_TXD0 — MII transmit data bit 0 |
| Pin produk 5 | MII_TXD1 — MII transmit data bit 1 |
| Pin produk 6 | MII_TXD2 — MII transmit data bit 2 |
| Pin produk 7 | MII_TXD3 — MII transmit data bit 3 |
| Pin produk 8 | MII_TXEN — MII transmit enable |
| Pin produk 9 | MII_TXER — MII transmit error |
| Pin produk 10 | MII_TXCLK — MII transmit clock |
| Pin produk 11 | MII_COL — MII collision detect |
| Pin produk 12 | MII_CRS — MII carrier sense |
| Pin produk 13 | MII_RXD0 — MII receive data bit 0 |
| Pin produk 14 | MII_RXD1 — MII receive data bit 1 |
| Pin produk 15 | MII_RXD2 — MII receive data bit 2 |
| Pin produk 16 | MII_RXD3 — MII receive data bit 3 |
| Pin produk 17 | MII_RXDV — MII receive data valid |
| Pin produk 18 | MII_RXER — MII receive error |
| Pin produk 19 | MII_RXCLK — MII receive clock |
| Pin produk 20 | MII_MDC — MII management data clock |
| Pin produk 21 | MII_MDIO — MII management data I/O |
| Pin produk 22 | nRESET — Device reset (active low) |
| Pin produk 23 | EEPROM_CS — EEPROM chip select |
| Pin produk 24 | EEPROM_SK — EEPROM serial clock |
| Pin produk 25 | EEPROM_DI — EEPROM data in |
| Pin produk 26 | EEPROM_DO — EEPROM data out |
| Pin produk 27 | LED1_P1 — PHY1 activity/link LED |
| Pin produk 28 | LED2_P1 — PHY1 speed LED |
| Pin produk 29 | LED1_P2 — PHY2 activity/link LED |
| Pin produk 30 | LED2_P2 — PHY2 speed LED |
| Pin produk 31 | PHY1_TXP — PHY1 transmit positive |
| Pin produk 32 | PHY1_TXN — PHY1 transmit negative |
| Pin produk 33 | PHY1_RXP — PHY1 receive positive |
| Pin produk 34 | PHY1_RXN — PHY1 receive negative |
| Pin produk 35 | PHY1_AVDD — PHY1 analog 3.3 V supply |
| Pin produk 36 | PHY1_AGND — PHY1 analog ground |
| Pin produk 37 | PHY2_TXP — PHY2 transmit positive |
| Pin produk 38 | PHY2_TXN — PHY2 transmit negative |
| Pin produk 39 | PHY2_RXP — PHY2 receive positive |
| Pin produk 40 | PHY2_RXN — PHY2 receive negative |
| Pin produk 41 | PHY2_AVDD — PHY2 analog 3.3 V supply |
| Pin produk 42 | PHY2_AGND — PHY2 analog ground |
| Pin produk 43 | VDDPLL — PLL analog 3.3 V supply |
| Pin produk 44 | GNDPLL — PLL analog ground |
| Pin produk 45 | XIN — 25 MHz crystal input |
| Pin produk 46 | XOUT — 25 MHz crystal output |
| Pin produk 47 | TEST — Test mode (tie low for normal operation) |
| Pin produk 48 | nIRQ — Interrupt request (active low) |
| Pin produk 49 | CFG[0] — Configuration strap bit 0 |
| Pin produk 50 | CFG[1] — Configuration strap bit 1 |
| Pin produk 51 | CFG[2] — Configuration strap bit 2 |
| Pin produk 52 | CFG[3] — Configuration strap bit 3 |
| Pin produk 53 | VDD_CORE — Core supply |
| Pin produk 54 | GND — Ground |
| Pin produk 55 | VDD_IO — I/O supply |
| Pin produk 56 | GND — Ground |
| Pin produk 57 | GPIO[0] — General-purpose I/O 0 |
| Pin produk 58 | GPIO[1] — General-purpose I/O 1 |
| Pin produk 59 | GPIO[2] — General-purpose I/O 2 |
| Pin produk 60 | GPIO[3] — General-purpose I/O 3 |
| Pin produk 61 | GPIO[4] — General-purpose I/O 4 |
| Pin produk 62 | GPIO[5] — General-purpose I/O 5 |
| Pin produk 63 | GPIO[6] — General-purpose I/O 6 |
| Pin produk 64 | GPIO[7] — General-purpose I/O 7 |
| Pin produk 65 | GPIO[8] — General-purpose I/O 8 |
| Pin produk 66 | GPIO[9] — General-purpose I/O 9 |
| Pin produk 67 | GPIO[10] — General-purpose I/O 10 |
| Pin produk 68 | GPIO[11] — General-purpose I/O 11 |
| Pin produk 69 | GPIO[12] — General-purpose I/O 12 |
| Pin produk 70 | GPIO[13] — General-purpose I/O 13 |
| Pin produk 71 | GPIO[14] — General-purpose I/O 14 |
| Pin produk 72 | GPIO[15] — General-purpose I/O 15 |
| Pin produk 73 | VDD_CORE — Core supply |
| Pin produk 74 | GND — Ground |
| Pin produk 75 | VDD_IO — I/O supply |
| Pin produk 76 | GND — Ground |
| Pin produk 77 | NC — Not connected (per datasheet) |
| Pin produk 78 | NC — Not connected (per datasheet) |
| Pin produk 79 | NC — Not connected (per datasheet) |
| Pin produk 80 | NC — Not connected (per datasheet) |
| Pin produk 81 | VDD_CORE — Core supply |
| Pin produk 82 | GND — Ground |
| Pin produk 83 | VDD_IO — I/O supply |
| Pin produk 84 | GND — Ground |
| Pin produk 85 | A_VDD — Analog supply |
| Pin produk 86 | A_GND — Analog ground |
| Pin produk 87 | A_VDD — Analog supply |
| Pin produk 88 | A_GND — Analog ground |
| Pin produk 89 | A_VDD — Analog supply |
| Pin produk 90 | A_GND — Analog ground |
| Pin produk 91 | A_VDD — Analog supply |
| Pin produk 92 | A_GND — Analog ground |
| Pin produk 93 | A_VDD — Analog supply |
| Pin produk 94 | A_GND — Analog ground |
| Pin produk 95 | A_VDD — Analog supply |
| Pin produk 96 | A_GND — Analog ground |
| Pin produk 97 | A_VDD — Analog supply |
| Pin produk 98 | A_GND — Analog ground |
| Pin produk 99 | A_VDD — Analog supply |
| Pin produk 100 | A_GND — Analog ground |
| Pin produk 101 | VDD_CORE — Core supply |
| Pin produk 102 | GND — Ground |
| Pin produk 103 | VDD_IO — I/O supply |
| Pin produk 104 | GND — Ground |
| Pin produk 105 | NC — Not connected (per datasheet) |
| Pin produk 106 | NC — Not connected (per datasheet) |
| Pin produk 107 | NC — Not connected (per datasheet) |
| Pin produk 108 | NC — Not connected (per datasheet) |
| Pin produk 109 | NC — Not connected (per datasheet) |
| Pin produk 110 | NC — Not connected (per datasheet) |
| Pin produk 111 | VDD_CORE — Core supply |
| Pin produk 112 | GND — Ground |
| Pin produk 113 | VDD_IO — I/O supply |
| Pin produk 114 | GND — Ground |
| Pin produk 115 | TEST_PHY1 — PHY1 test mode (per datasheet) |
| Pin produk 116 | TEST_PHY2 — PHY2 test mode (per datasheet) |
| Pin produk 117 | RSVD — Reserved (per datasheet) |
| Pin produk 118 | RSVD — Reserved (per datasheet) |
| Pin produk 119 | RSVD — Reserved (per datasheet) |
| Pin produk 120 | RSVD — Reserved (per datasheet) |
| Pin produk 121 | RSVD — Reserved (per datasheet) |
| Pin produk 122 | RSVD — Reserved (per datasheet) |
| Pin produk 123 | RSVD — Reserved (per datasheet) |
| Pin produk 124 | RSVD — Reserved (per datasheet) |
| Pin produk 125 | RSVD — Reserved (per datasheet) |
| Pin produk 126 | RSVD — Reserved (per datasheet) |
| Pin produk 127 | RSVD — Reserved (per datasheet) |
| Pin produk 128 | EP — Exposed pad - thermal/ground |
Karakteristik Kuasa & Thermal
| Kuasa Masuk | 3.3 V (I/O and analog); 1.8 V or 1.2 V internal core |
| Suhu Beroperasi | -40C to +85C (industrial grade) |
Parameter kuasa masuk dan thermal untuk LAN9313-NU seperti dipublikasikan oleh produsen.
Aplikasi Umum
LAN9313-NU cocok untuk 7 aplikasis: Industrial Factory Automation Gateways, Building Automation Controllers, Networked Security and Access Control, Point-of-Sale (POS) Terminals, Automotive Infotainment Networking, Embedded Sensor and IoT Hubs, Medical Monitoring Equipment.
Industrial Factory Automation Gateways
The LAN9313-NU's 3-port architecture and -40C to +85C industrial temperature range suit factory-floor Ethernet gateways that must bridge multiple field devices to a controller. Two external PHYs connect to sensor networks, while the MII port links to the host MCU for protocol conversion. Hardware-accelerated 802.1Q VLAN and 802.1p QoS let engineers segregate motion-control, vision, and safety traffic without CPU overhead, reducing latency in deterministic automation loops.
Direkomendasikan
Building Automation Controllers
In BACnet/IP and Modbus TCP building controllers, the LAN9313-NU provides a managed switch with VLAN segmentation to isolate lighting, HVAC, and security subnets on a single board. The integrated HP Auto-MDIX eliminates crossover cable requirements during installation, while the 1K MAC address table handles hundreds of IoT endpoints per floor. Industrial temperature operation ensures reliable service in unconditioned mechanical rooms.
Direkomendasikan
Networked Security and Access Control
IP-based access controllers, IP cameras, and intercoms use the LAN9313-NU to provide dual Ethernet ports for daisy-chained installation plus one MII host port. The managed switch fabric supports 802.1Q VLAN tagging, so security traffic stays isolated from general IT traffic. Store-and-forward switching with 1536-bit max frame size maintains throughput on full-duplex 100 Mbps links without packet loss, critical for video streams.
Direkomendasikan
Point-of-Sale (POS) Terminals
Modern POS terminals connect to store back-office networks, payment processors, and customer Wi-Fi concurrently. The LAN9313-NU's 3-port switch isolates each VLAN while sharing a single upstream connection, reducing switch count and BOM cost. The MII host bus interfaces easily with low-cost ARM Cortex-M MPUs. Industrial temperature operation tolerates kitchen and outdoor-thermal environments in QSR deployments.
Direkomendasikan
Automotive Infotainment Networking
In non-safety automotive Ethernet networks, the LAN9313-NU provides rear-seat entertainment and diagnostic-port networking. Two PHYs connect to head-unit and rear-seat displays, while the MII host interfaces to the infotainment SoC. 802.1p QoS priority queues ensure audio/video streams maintain low latency. Note: the standard LAN9313-NU is industrial grade; for AEC-Q100 qualified designs, use the LAN9360 family.
Direkomendasikan
Embedded Sensor and IoT Hubs
IoT edge hubs aggregate data from multiple sensor clusters over Ethernet. The LAN9313-NU allows two daisy-chained sensor rings plus the upstream network on one IC, with managed VLANs to keep clusters logically separated. The 3.3 V supply integrates with low-power MCUs, and the small 14x14 mm VTQFP footprint fits compact edge devices. The exposed pad aids thermal dissipation in always-on deployments.
Direkomendasikan
Medical Monitoring Equipment
Patient monitors and diagnostic imaging systems use the LAN9313-NU to provide redundant Ethernet connectivity for safety and uptime. Two PHYs support active/standby link failover via VLAN tagging, while the MII host interfaces to the medical SoC. 802.1p QoS prioritizes alarm packets. Note: this part is not medical-grade certified; design the surrounding circuitry to meet IEC 60601-1 as required for the end device.
Direkomendasikan
Ringkasan Produk Direkomendasikan
Data referensi engineering untuk LAN9313-NU — pembandingan, panduan desain, dan informasi konformitas.
Panduan Pemilihan
Pembandingan dengan Alternatif
| Parameter Umum | Produk Ini | LAN9303-NU | LAN9353-NU | LAN9313-NU-TR | LAN9313i-NU |
|---|---|---|---|---|---|
| Package | 128-pin VTQFP (14x14) | 128-pin VTQFP (14x14) - same | 128-pin VTQFP (14x14) - same | 128-pin VTQFP (14x14) - same | 128-pin VTQFP (14x14) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Number of Ports | 3 (managed) | 3 (unmanaged) | 3 (managed + TCP/IP offload) | 3 (managed) | 3 (managed, industrial) |
| Integrated PHYs | 2 (10/100 + Auto-MDIX) | 2 (10/100 + Auto-MDIX) | 2 (10/100 + Auto-MDIX) | 2 (10/100 + Auto-MDIX) | 2 (10/100 + Auto-MDIX) |
| Host Interface | MII (16-bit) | MII (16-bit) | MII + 16-bit host bus + TCP/IP offload | MII (16-bit) | MII (16-bit) |
| VLAN/QoS Support | 802.1Q + 802.1p | None (unmanaged) | 802.1Q + 802.1p | 802.1Q + 802.1p | 802.1Q + 802.1p |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C (industrial) |
| Approx. Unit Price (USD) | $13.42 (qty 1) | $8-10 (qty 1, unmanaged lower cost) | $15-17 (qty 1, with TCP/IP offload) | $13.42 (qty 1, T&R variant) | $13-15 (qty 1, industrial) |
Diferensiator Kunci
- Managed Layer-2 features in same 128-pin package (vsLAN9303-NU)
- On-chip dual PHY eliminates external PHY BOM (vsDiscrete PHY + MAC + switch design)
- Optional TCP/IP hardware offload on pin-compatible upgrade (vsLAN9353-NU)
Catatan Desain
Solder the LAN9313-NU's central exposed pad to a continuous ground copper pour with at least 16 thermal vias (0.3 mm drill, 0.5 mm pitch) for heat dissipation and EMI return path. Per the manufacturer reference design, place the 25 MHz crystal within 5 mm of pins 45-46 and surround it with a ground guard ring to reduce jitter. Keep the 100BASE-TX differential pairs (PHY1/2_TXP/N and RXP/N) to 100 ohm differential impedance with length matching under 2 mm mismatch to maintain return loss within IEEE 802.3 spec.
Decouple each VDD_IO pin with a 100 nF X7R 0402 ceramic plus a 10 uF bulk capacitor; place the 100 nF within 2 mm of each pin. Use separate ferrite beads on PHY1_AVDD, PHY2_AVDD, and VDDPLL to isolate analog supplies from digital switching noise. The 1.8 V (or 1.2 V) core rail must be sequenced after the 3.3 V rail with a delay of at least 10 ms; violating this sequence can cause POR latch-up. Estimated: 100 mA peak at 3.3 V under full traffic.
Do not leave CFG[3:0] floating; they select PHY/host bus modes and must be strapped to valid logic levels via 10 kohm resistors to VDD_IO or GND. A common mistake is omitting the 1.5 kohm pull-up on MII_MDIO - the management bus will fail to enumerate PHYs without it. Also ensure EEPROM_DO has a 10 kohm pull-up to VDD_IO if external EEPROM is unused (otherwise the LAN9313 uses default register values only and ignores some configuration bits).
Informasi Konformitas
RoHS and REACH compliant per Microchip product page. Lead-free (Pb-free) and halogen-free per datasheet. Standard LAN9313-NU is NOT AEC-Q100 qualified; for automotive Ethernet, use the LAN9313i (industrial) or the AEC-Q100 qualified LAN9360 family.
