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AMD Am79C874 NetPHY-1LP Low Power 10/100-TX/FX Ethernet Transceiver Service Manual
The Am79C874 NetPHY‑1LP is a low‑power Ethernet PHY that supports 10/100‑BASE‑TX and 100‑BASE‑FX operation. It operates from a single 3.3 V supply, is 5‑V I/O tolerant, and consumes as little as 0.3 W in typical mode.
The device includes multiple LED indicators, MII and 7‑wire GPSI interfaces, and offers three power‑saving modes (Power‑Down, Unplugged, Idle Wire). It is offered in a 12 mm × 12 mm 80‑lead TQFP package and is qualified for industrial temperature ranges.
AMD 100-TX specifications
| Typical power consumption | 0.3 W |
|---|---|
| Package dimensions | 12 mm × 12 mm, 80‑lead TQFP |
| Supply voltage | 3.3 V (5 V I/O tolerant) |
| LED indicators | Link, TX activity, RX activity, Collision, 10 Mbps, 100 Mbps, Full/Half Duplex |
| Maximum MDIO/MDC clock | 25 MHz |
| Transformer options | 1:1 or 1.25:1 transmit transformer |
| External filter requirement | None |
Source: AMD Am79C874 NetPHY-1LP Low Power 10/100-TX/FX Ethernet Transceiver Service Manual
All AMD 100-TX documents by type
Disassembly, diagnostics and part numbers, for repair.
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the typical power consumption of the Am79C874?
The device typically consumes 0.3 W.
From: AMD Am79C874 NetPHY-1LP Low Power 10/100-TX/FX Ethernet Transceiver Service Manual
Does the transceiver require any external filters or chokes?
No, the device operates without external filters or chokes.
From: AMD Am79C874 NetPHY-1LP Low Power 10/100-TX/FX Ethernet Transceiver Service Manual
What is the typical power consumption of the Am79C874 NetPHY‑1LP?
The device typically consumes 0.3 W.
From: AMD Am79C874 NetPHY-1LP Low Power 10/100-TX/FX Ethernet Transceiver Datasheet
What temperature range does the NetPHY‑1LP support?
It supports an industrial temperature range from –40 °C to +85 °C.
From: AMD Am79C874 NetPHY-1LP Low Power 10/100-TX/FX Ethernet Transceiver Datasheet