The STMUX1000L is an 8- to 16-bit bi-directional Multiplexer/Demultiplexer designed for applications that require signal routing at 10/100/1000 Megabit Ethernet speeds. It integrates three Single Pole Dual Throw (SPDT) Channels for LED support and is available in two different packages, the TSSOP56 and QFN56. This application note highlights various applications into which the STMUX1000L Gigabit LAN Switch can be designed, such as PC Notebooks and docking stations. These are applications where several electrical characteristics impact high performance data transfer, including low noise between signals, low RON, and low Con and Coff capacitance. Additionally, the superior performance of the STMUX1000L is illustrated when compared to a competitor's device.
The document introduces the STMUX1000L, an 8- to 16-bit bi-directional Multiplexer/Demultiplexer designed for high-performance signal routing in Gigabit Ethernet environments. It highlights key electrical characteristics such as low noise, low on-resistance (Ron), and low capacitance (Cg) essential for applications like PC notebooks and docking stations.
The note details the evolution of Gigabit Ethernet technology and provides specific testing procedures for measuring -3dB bandwidth and cross-talk using standard equipment. It concludes with a summary of the device's features, including its suitability for portable applications due to low quiescent current consumption.
The device is designed for applications that require signal routing at 10/100/1000 Megabit Ethernet speeds.
The device has a bandwidth of 350MHz —3dB (typ).
The low channel Cop is 6pF (typ).