Intel KTI226IT Ethernet Controller I226-IT Single Port 2.5G PCIe 3.1 Industrial Wide Temperature VQFN-56 Intel KTI226IT Ethernet Controller 2.5G Industrial -40~85℃ VQFN-56

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Intel KTI226IT Ethernet Controller I226-IT Single Port 2.5G PCIe 3.1 Industrial Wide Temperature VQFN-56

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KTI226IT Product Overview

The Intel Ethernet Controller KTI226IT is a high-performance, low-power single-port multi-gigabit Ethernet controller from Intel, part of the I226-IT series. Housed in a 56-pin VQFN (7×7mm) compact package， the KTI226IT is a fully integrated Gigabit Ethernet Media Access Control (MAC) and Physical Layer (PHY) device. The KTI226IT connects to the host system via a PCI Express 3.1 (5 GT/s) x1 interface， supporting 10/100/1000/2500 Mbps data rates. The KTI226IT is the industrial-grade variant in the I226 series, supporting a -40℃ to +85℃ wide operating temperature range. The chip supports Time-Sensitive Networking (TSN) , Intel® Stable Image Platform Program (Intel SIPP) , and IEEE 1588 Precision Time Protocol for enterprise-grade applications. The KTI226IT is ideal for industrial automation, embedded systems, automotive electronics, and outdoor equipment requiring high reliability and wide-temperature operation.

KTI226IT Key Features

The KTI226IT embodies Intel's deep expertise in industrial-grade high-performance networking through its robust hardware architecture and feature set. It features a PCI Express 3.1 (5 GT/s) x1 host interface， delivering data transfer rates up to 2.5Gbps. The KTI226IT offers a fully integrated single-port Gigabit MAC and PHY supporting 10BASE-Te, 100BASE-TX, 1000BASE-T, and 2.5GBASE-T. The chip supports transmission distances of up to 100 meters over CAT 5e UTP cable. The KTI226IT supports IEEE 802.3az Energy Efficient Ethernet (EEE) for reduced power consumption during low network activity. The chip supports Time-Sensitive Networking (TSN) features including IEEE 802.1AS-rev, 802.1Qav, and 802.1Qbv. The KTI226IT supports IEEE 1588 Precision Time Protocol (PTP) for time-sensitive industrial applications. The chip supports 9KB Jumbo Frames, UDP/TCP/IP checksum offload, and TCP segmentation offload (TSO) . The KTI226IT supports Intel® vPro™ Technology (Windows) and Intel® SIPP for enterprise IT management. The chip supports Windows Server and Linux operating systems. The KTI226IT operates from 3.3V (I/O) and 0.95V (core) ， with a temperature range of -40℃ to +85℃.

KTI226IT Applications

With its exceptional 2.5G high-speed transmission, compact package, and industrial-grade wide-temperature reliability, the KTI226IT is widely deployed in demanding networking environments. The KTI226IT is an ideal core controller for industrial automation equipment and embedded systems requiring high-speed wired connectivity. The chip is suitable for industrial control, machine vision, smart cities, robotics, and drones requiring high reliability and wide-temperature operation. The KTI226IT is also suitable for automotive electronics and outdoor equipment requiring stable operation across -40℃ to +85℃. With its support for Time-Sensitive Networking (TSN) and IEEE 1588 Precision Time Protocol, the KTI226IT is particularly well-suited for industrial automation scenarios requiring precise time synchronization and deterministic communication. The chip is widely used in industrial IoT gateways, edge computing devices, intelligent transportation systems, and energy management equipment.

KTI226IT Key Advantages

The KTI226IT stands out as a mature, commercially available industrial-grade single-port multi-gigabit Ethernet controller that strikes an excellent balance between high-speed performance, industrial-grade wide-temperature reliability, and rich feature set. Housed in a 56-pin VQFN (7×7mm) compact package, the KTI226IT supports data rates up to 2.5Gbps — 2.5 times faster than Gigabit Ethernet over existing CAT 5e cabling. The KTI226IT supports a -40℃ to +85℃ industrial-grade wide operating temperature range， ensuring stable operation in harsh industrial, outdoor, and automotive environments. The chip supports Time-Sensitive Networking (TSN) features for industrial real-time communication. The KTI226IT supports IEEE 1588 Precision Time Protocol (PTP) for time-sensitive applications. The chip supports Intel® vPro™ Technology (Windows) and Intel® SIPP for long-term enterprise platform stability. The KTI226IT features 9KB Jumbo Frame support for improved large-data transmission efficiency. The chip is available in Tray (spec code SRKTX) and Tape & Reel (spec code SRKTW) packaging, suitable for manual insertion and automated SMT assembly respectively. The KTI226IT offers system integrators and OEMs a highly competitive industrial-grade 2.5G Ethernet connectivity solution.

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Intel KTI226IT Ethernet Controller I226-IT Single Port 2.5G PCIe 3.1 Industrial Wide Temperature VQFN-56 Intel KTI226IT Ethernet Controller 2.5G Industrial -40~85℃ VQFN-56

FAQs:

1 What is the KTI226IT S RKTX chip？
KTI226IT is an industrial-grade 2.5G Ethernet controller chip from Intel belonging to the I226 series, integrating MAC and PHY layers and commonly used in high-performance industrial PCs and embedded devices .

2 What network speeds does the chip support？
KTI226IT supports auto-negotiation of 10M, 100M, 1G, and 2.5G Ethernet speeds, fully compliant with IEEE 802.3 standards .

3 What package and pin count does it use？
KTI226IT adopts a VQFN-56 no-lead surface mount package with 56 pins, a standard footprint of 7 by 7 millimeters, and a lead pitch of 0.4 millimeters .

4 What are the operating voltage and temperature ranges？
KTI226IT uses a dual power design of 3.3V and 0.95V. As an industrial-grade version (-IT), the operating temperature range is from minus 40°C to plus 85°C .

5 What host bus interface does it support？
KTI226IT supports a single-lane PCIe Gen 2 (5.0GT/s) version 3.1 high-speed bus interface and is compatible with PCIe x4, x8, and x16 slots .

6 What advanced network features does the chip support？
KTI226IT supports Time Sensitive Networking (TSN), Energy Efficient Ethernet (EEE), IEEE 1588 precise time synchronization, VLAN filtering, and hardware checksum offloading .

7 What application scenarios is this chip suitable for？
KTI226IT is primarily used in 2.5G industrial NICs, industrial control motherboards, edge computing platforms, M.2 network expansion cards, and embedded systems requiring 2.5G connectivity .

8 Does this chip require an external PHY chip to operate？
No, it does not. The chip integrates a complete Ethernet PHY transceiver internally, so only external magnetic isolation transformers and an RJ45 connector are required to form a complete wired network port .

9 What are the PCB design considerations？
Ensure the bottom thermal pad is grounded to a large copper area for heat dissipation, and RGMII data lines and PCIe differential traces must strictly follow impedance matching and equal-length routing .

10 How is the driver compatibility on different operating systems？
It has excellent system compatibility, using the native igc driver (v1.8+) in ESXi 8.0, and supports Windows 11, 10, and Linux 5.8 and above.