KSZ8995FQI - 5-Port 10/100 Managed Ethernet Switch | Microchip
N.º de pieza: KSZ8995FQI ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $17.38 | $17,38 |
| 10 | $17.38 | $173,80 |
| 100 | $14 | $1.400,00 |
| 500 | $14 | $7.000,00 |
| 1.000 | $14 | $14.000,00 |
| 10.000 | $14 | $140.000,00 |
KSZ8995FQI Descripción general
An Ethernet switch IC is a Layer-2 network device that forwards Ethernet frames between connected ports based on MAC addresses, sitting between the PHY (physical layer transceiver) and the higher-layer CPU/MAC processor. In the system hierarchy, the KSZ8995FQI is a switch: switch IC -> Layer-2 Ethernet switch -> managed switch -> Ethernet controller -> networking IC -> semiconductor. It falls under the broader category of specialized networking ICs that combine multiple PHYs, lookup engines, and queue management for industrial, embedded, and consumer Ethernet applications.
Key features include an integrated Layer-2 managed switch fabric with per-port 10/100 Mbps support, on-chip termination resistors for reduced BOM, port-5 Fiber Support (100BASE-FX), QoS prioritization with four queues, port-based VLAN and 802.1Q tag-based VLAN, IGMP snooping for multicast, and a comprehensive MII/RMII management interface. According to the manufacturer datasheet, the part supports unmanaged or managed operation via SPI, I2C, or MDC/MDIO host access.
The KSZ8995FQI uses Micrel/Microchip's proven 0.18um process with internal voltage regulation for 1.8V/2.5V rails from a single 3.3V supply, reducing external component count. Its non-blocking wire-speed switching architecture delivers full 100 Mbps throughput on all ports simultaneously, with latency suitable for real-time industrial control and IP-surveillance backhaul.
Typical applications include industrial Ethernet, IP surveillance, broadband gateways, VoIP phone systems, and embedded industrial control. The on-chip termination and integrated magnetics support make it ideal for compact designs where PCB area and BOM cost are constrained.
When designing with this device, ensure that the 3.3V supply is decoupled with 0.1uF and 10uF capacitors close to each power pin. The exposed pad (if any) should be soldered to a sufficient copper pour for thermal dissipation. For Fiber Support on port 5, an external 100BASE-FX transceiver such as a Micrel/Microchip fiber PHY must be connected.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, providing unique engineering value beyond what DigiKey/Mouser/Octopart product pages typically offer.
Alternativas directas para KSZ8995FQI — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con KSZ8995FQI (mismo factor de forma y huella) — difiere en Management Interface, Number of Ports, QoS, Supply Voltage, VLAN Support.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
KSZ8995FQI-TR
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
KSZ8995FQ
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
KSZ8995MAI
✅ Sustitución directa✓ En stock
$5.95 / unidad
Ver hoja de datos →KSZ8995MA
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
KSZ8995M
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
KSZ8995FQI Valores máximos y características eléctricas
| Función | 5-Port 10/100 Mbps Managed Layer-2 Switch with integrated PHYs |
| Switch Architecture | Non-blocking wire-speed switching fabric |
| Number of Ports | 5 |
| Standards Compliance | IEEE 802.3, IEEE 802.3u |
| Port Speed | 10/100 Mbps (per port) |
| Fiber Support | 100BASE-FX on Port 5 (via external PHY) |
| On-chip Termination | Yes (reduces BOM) |
| VLAN Support | Port-based + 802.1Q tag-based VLAN |
| QoS | 4 queues, hardware-based prioritization |
| IGMP Snooping | Yes (multicast management) |
| Management Interface | SPI, I2C, MDC/MDIO |
| Tensión de alimentación | 3.3 V (with internal 1.8V/2.5V regulators) |
| Encapsulado | 128-pin PQFP (14x20 mm) |
| Temperatura de funcionamiento | -40C to +85C (industrial) |
| Estado RoHS | Compliant (per Microchip product page) |
Guía de configuración de pines de KSZ8995FQI 128-pin pqfp (14x20 mm)
Configuración de pines para KSZ8995FQI (encapsulado 128-pin pqfp (14x20 mm)). La numeración de pines, las funciones y los diagramas de conexión se definen en la hoja de datos del fabricante. Consúltela para conocer el footprint exacto y las directrices de soldadura.
No hay datos detallados de patillaje disponibles para KSZ8995FQI.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
KSZ8995FQI es adecuado para 6 aplicacións: Industrial Ethernet Switch, IP Surveillance / Security Camera Systems, Broadband Gateway / Router, VoIP Phone Systems / IP PBX, Embedded Industrial Control / Machine Vision, Smart Home / IoT Gateway.
Industrial Ethernet Switch
The KSZ8995FQI is well-suited for industrial 5-port Ethernet switches operating in factory automation environments. Its -40C to +85C industrial temperature range ensures reliable operation in harsh conditions including high humidity, vibration, and temperature extremes. The integrated Layer-2 managed switch fabric with VLAN, QoS prioritization, and IGMP snooping supports deterministic communication between controllers, drives, and HMIs. The on-chip termination reduces BOM count and PCB area by eliminating external resistor networks, while port-5 Fiber Support enables long-distance fiber uplinks in factory floor topologies spanning hundreds of meters.
Recomendado
IP Surveillance / Security Camera Systems
The KSZ8995FQI serves as the central networking hub in IP surveillance systems connecting multiple PoE-powered cameras to an NVR. Its 4-queue QoS prioritization ensures video streams maintain low latency and jitter, while IGMP snooping optimizes multicast bandwidth for efficient group video distribution. The 5-port configuration handles 4 camera inputs plus uplink to the NVR or central monitoring station. Port-5 Fiber Support enables long-distance backbone connections between buildings or to a central security operations center. The integrated PHYs and on-chip termination minimize PCB complexity for compact surveillance equipment enclosures.
Recomendado
Broadband Gateway / Router
The KSZ8995FQI provides 5-port switching in residential and SMB broadband gateways, connecting LAN ports, WAN interface, and VoIP subsystems. Its VLAN support enables triple-play service segregation (internet, IPTV, and VoIP) on separate virtual networks. QoS prioritization ensures VoIP traffic maintains low latency and the IPTV multicast streams do not experience buffering. The integrated PHYs simplify gateway PCB design while maintaining IEEE 802.3/802.3u compliance. The non-blocking wire-speed architecture delivers full 100 Mbps throughput on all ports simultaneously for typical broadband speeds.
Recomendado
VoIP Phone Systems / IP PBX
The KSZ8995FQI is ideal for VoIP phone systems requiring QoS prioritization to maintain call quality. Its hardware-based 4-queue QoS ensures voice packets receive priority over data traffic, preventing jitter and latency that degrade call experience. The VLAN support enables voice and data traffic segregation on separate virtual networks for security. IGMP snooping optimizes multicast for efficient paging and group announcements. The 5-port configuration handles multiple IP phones, a PC uplink, and an uplink to the IP PBX or central call manager in office telephony deployments.
Recomendado
Embedded Industrial Control / Machine Vision
The KSZ8995FQI delivers reliable Ethernet connectivity for industrial machine vision systems and PLC networks requiring deterministic real-time communication. Its non-blocking wire-speed switching architecture ensures all camera and control traffic flows with predictable latency, critical for closed-loop machine control. The industrial operating temperature range supports factory floor deployment. Port-5 Fiber Support enables EMI-immune communication between machines in electrically noisy factory environments. The integrated PHY reduces PCB area for compact embedded controller designs where board space is at a premium.
Recomendado
Smart Home / IoT Gateway
The KSZ8995FQI serves as the networking backbone in smart home gateways connecting IoT devices, security cameras, entertainment systems, and voice assistants. Its 5-port configuration handles multiple device categories while the QoS prioritization ensures real-time applications like video streaming maintain bandwidth. The VLAN support enables network segmentation between IoT, guest, and primary user networks for security. The low power dissipation suits always-on power output for energy-conscious smart home designs. The integrated termination resistors and PHY support reduce BOM cost for consumer smart home products.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para KSZ8995FQI — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | KSZ8995FQI-TR | KSZ8995FQ | KSZ8995MAI | KSZ8995MA | KSZ8995M |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 128-pin PQFP (14x20 mm) | 128-pin PQFP (14x20 mm) - same | 128-pin PQFP (14x20 mm) - same | 128-pin PQFP (14x20 mm) ML - same footprint | 128-pin PQFP (14x20 mm) ML - same footprint | 128-pin PQFP (14x20 mm) ML - same footprint |
| Function | 5-port 10/100 managed switch | 5-port 10/100 managed switch | 5-port 10/100 managed switch | 5-port 10/100 managed switch | 5-port 10/100 managed switch | 5-port 10/100 managed switch |
| Number of Ports | 5 | 5 | 5 | 5 | 5 | 5 |
| Fiber Support | Yes (port 5) | Yes (port 5) | Yes (port 5) | Yes (port 5) | Yes (port 5) | Yes (port 5) |
| On-chip Termination | Yes | Yes | Yes | Yes | Yes | Yes |
| Operating Temperature | -40C to +85C (industrial) | -40C to +85C (industrial) | 0C to +70C (commercial) | -40C to +85C (industrial) | 0C to +70C (commercial) | 0C to +70C (commercial) |
Diferenciadores clave
- Industrial temperature range with on-chip termination (frente a KSZ8995M)
- PQFP-128 (FQ) package with industrial grade (frente a KSZ8995MAI)
- 5-port fully integrated solution with fiber support (frente a KSZ8863RLLI-TR)
Notas de diseño
The KSZ8995FQI operates from a single 3.3V supply with internal regulators generating 1.8V and 2.5V rails. Decouple each power pin with a 0.1uF ceramic capacitor placed within 5mm of the pin, and add a bulk 10uF tantalum or ceramic capacitor on each supply rail (3.3V, 1.8V, 2.5V). Place the bulk capacitor close to the IC but separated from the high-frequency ceramic caps to avoid resonance. Insufficient decoupling may cause PHY link instability and CRC failures on connected ports.
Although the KSZ8995FQI is a low-power switch IC, the 128-pin PQFP package has moderate thermal resistance (approximately 30-40 C/W theta_JA on a standard 4-layer PCB). For industrial temperature operation at high ambient (70C+), ensure the PCB has a minimum 1 square inch copper pour connected to the ground plane. If operating in a sealed enclosure with limited airflow, derate maximum operating temperature by 5-10C to ensure junction temperature remains within specifications.
Route the MII/RMII management bus signals (MDC, MDIO) away from switching power converter and high-frequency clock traces to avoid crosstalk. Keep differential Ethernet signals (TX/RX pairs) matched in length with controlled impedance (100 ohm differential) and avoid sharp 90-degree bends. The integrated PHYs include on-chip termination resistors, so no external termination resistor networks are required on the MDI traces - this simplifies PCB layout significantly.
Do not exceed the absolute maximum supply voltage of 3.6V on VDD33 pins, as this can permanently damage the internal regulators. When using fiber support on port 5, an external 100BASE-FX transceiver (such as a Microchip fiber PHY) must be properly connected and configured via the port mode straps. Incorrect strap configuration is a common cause of switch management interface issues - consult the datasheet's configuration strap section carefully during board bring-up.
Información de cumplimiento
RoHS compliant per Microchip product page. Not AEC-Q100 qualified (industrial, not automotive). Lead-free confirmed.
