AM79C874 Ethernet PHY datasheet, specs & sourcing guide

The Am79C874 NetPHY-1LP is a mature 10/100 Mbps Ethernet physical layer (PHY) transceiver originally manufactured by AMD Alldatasheet Radioradar. While it remains a staple for low-power embedded systems and legacy network adapters, the broader Ethernet market in 2026 is undergoing a massive shift toward high-speed AI-driven interconnects 100Gmodules.

Product Overview & Applications

The Am79C874 is valued for its low power consumption (approx. 300mW) and support for both twisted-pair and fiber-optic media Alldatasheet. It is commonly used in:

* Legacy Networking: 10/100 NICs and print servers Gdcy.

* Embedded Systems: Industrial controllers and game consoles.

* Secure Links: Fiber-to-the-desktop applications using 100BASE-FX.

2026 Market Trends

The Ethernet transceiver market is currently bifurcated:

* Legacy Segment: 10/100 Mbps products like the AM79C874 are widely available as replacement parts or for specific industrial needs at low price points ($0.20 – $4.00 per unit) Alibaba Alibaba.

* High-Growth AI Segment: The market is projected to reach $26 billion by 2026, driven by 800G and 1.6T transitions to support AI clusters Lightcounting 100Gmodules.

* Technological Shift: Demand is moving toward Linear Pluggable Optics (LPO) and Co-Packaged Optics (CPO) to solve power and latency issues in high-density data centers 100Gmodules.

The files below provide detailed search results for the AM79C874 and modern low-power Ethernet PHY alternatives.