## Basic Product Information
Part Number: KSZ8794CNXIC
| Field | Value |
|——-|——-|
| Manufacturer | Microchip Technology |
| Device Type | KSZ8794CNXIC |
| Package | QFN-64 (8×8 mm), Exposed Pad |
| Model Interpretation | KSZ = Micrel/Microchip Ethernet Switch family; 8794 = 4-port 10/100 managed switch with Gigabit uplink; CNX = QFN package; I = Industrial temperature range (-40°C to +85°C); C = RoHS compliant |
| Compliance | RoHS3 Compliant, REACH Unaffected, Lead-Free |
| Grade | Industrial (-40°C to +85°C) |
## Core Electrical Parameters
| Parameter | Value | Unit |
|———–|——-|——|
| Number of Ports | 4 (3× 10/100 Mbps + 1× 10/100/1000 Mbps Gigabit uplink) | Ports |
| Data Rate (Copper) | 10 / 100 | Mbps |
| Data Rate (Gigabit Uplink) | 10 / 100 / 1000 | Mbps |
| Interface Type | RGMII, MII, RMII, SPI | — |
| SPI Clock Rate | Up to 50 | MHz |
| Supply Voltage (Analog) | 3.3 / 2.5 | V |
| Supply Voltage (Digital I/O) | 1.8 / 2.5 / 3.3 | V |
| Supply Voltage (Core) | 1.2 | V |
| Supply Current (Max) | 107 / 110 | mA |
| Operating Temperature Range | -40 to +85 | °C |
| Storage Temperature Range | -55 to +150 | °C |
| Reference Clock | 25 MHz (±50 ppm) | MHz |
| Frame Buffer RAM | 64 | KB |
| MAC Address Table | 1024 entries | — |
| Jumbo Packet Support | Up to 2 | KB |
| VLAN Groups (Active) | Up to 128 (full range 4096 VLAN IDs) | — |
| MIB Counters | 36 per port | — |
| MSL Rating | 3 (168 hours) | — |
| Dimensions | 8 × 8 × 0.85 | mm |
| Duplex Mode | Full-Duplex / Half-Duplex | — |
## Core Features & Advantages
The KSZ8794CNXIC delivers exceptional performance for demanding Ethernet switching applications.
– **Primary Function**: Layer 2 managed 4-port 10/100 Ethernet switch with a Gigabit RGMII/MII/RMII uplink, designed for cost-sensitive industrial and embedded networking.
– **Key Advantages**:
– **Highly Integrated Design**: Combines three 10/100Base-T/TX MAC/PHYs and one 10/100/1000Base-T/TX GMAC with configurable RGMII/MII/RMII uplink in a single 64-pin QFN package — drastically reducing BOM cost and PCB footprint.
– **Advanced Managed Switch Features**: IEEE 802.1Q VLAN (up to 128 active groups), IEEE 802.1p QoS with 4 priority queues, ACL-based packet filtering, port mirroring, and RSTP (Rapid Spanning Tree Protocol) for network redundancy and topology management.
– **Comprehensive Power Management**: IEEE 802.3az Energy Efficient Ethernet (EEE), Energy Detect Power-Down (EDPD), Wake-on-LAN (WoL), and full-chip software power-down — ideal for power-constrained and always-on deployments.
– **Flexible CPU Interface**: GMAC port 4 supports RGMII, MII, and RMII modes with tail tagging, enabling seamless integration with a wide range of host processors and MCUs.
– **Robust Diagnostics**: Microchip’s LinkMD® cable diagnostics for detecting cable opens, shorts, and estimated cable length, plus multiple loopback modes (remote, PHY, MAC) for production testing and field diagnostics.
– **On-Chip Termination**: Integrated termination resistors and internal biasing for differential pairs eliminate external components and further reduce system cost.
## Typical Application Scenarios
– **Industry**: Industrial Automation, Networking, Consumer Electronics, Automotive, IoT
– **Equipment**: Industrial Ethernet switches, IP cameras, VoIP phones, set-top boxes, gateway routers, factory automation controllers, automotive infotainment systems
– **Use Cases**:
– **Industrial Ethernet Networks**: Deploy as a compact managed switch in PLCs, remote I/O modules, and factory floor equipment requiring deterministic 10/100 Mbps connectivity with Gigabit uplink aggregation.
– **VoIP and IP Telephony**: Integrate three 10/100 copper ports for IP phone LAN passthrough with a Gigabit uplink to the enterprise core, leveraging QoS priority queues for voice traffic.
– **Smart Home Gateways and IoT Hubs**: Build multi-port Ethernet connectivity into home routers and IoT gateways with EEE power savings for always-on operation, WoL for remote wake-up, and VLAN isolation for network segmentation.
## Market Reference Price
| Market | Price Range | Currency |
|——–|————-|———-|
| Huaqiangbei Spot | $4.50 – $6.00 | USD |
| Overseas B2B (DigiKey/Newark/Mouser) | $6.18 – $7.67 | USD |
**Note**: Prices vary by quantity, batch date, and supplier. Contact for exact quote. Volume pricing (1,000+ units) can reach approximately $6.02–$6.19 per unit from authorized distributors.
## Related Models Comparison
| Model | Difference | Target Application |
|——-|————|——————-|
| KSZ8794CNXCC | Commercial grade (0°C to +70°C), lower cost alternative | Consumer electronics, indoor networking equipment |
| KSZ8794CNXIC-TR | Tape & Reel packaging (same industrial spec) | High-volume SMT production lines |
| KSZ8795CNXIC | 5-port variant with additional copper port | Applications requiring 4+1 port copper configuration |
| KSZ8796CNXIC | Higher-speed variant with Gigabit Ethernet support | Gigabit backbone and aggregation applications |
| KSZ8864CNXI | 4-port 10/100 switch with 2× MAC interface (MII/RMII only, no RGMII/Gigabit uplink) | Cost-sensitive designs without Gigabit uplink requirement |