Diodes Incorporated


The PI3L2500 is a 8-Channel 2:1 multiplexer/demultiplexer LAN Switch with Hi-Z outputs. Industry leading advantages include a propagation delay of less than 250ps, resulting from its low channel resistance and I/O capacitance. The device multiplexes differential outputs from a Gigabit Ethernet transceiver (PHY) device to one of two corresponding B or C outputs. The switch is bidirectional and offers little or no attenuation of the high-speed signals at the outputs. It is designed for low bit-to-bit skew, high channel-to-channel noise isolation and is compatible with various standards, such as 1000/2500/10000 Base-T (Ethernet).

The PI3L2500 provides a Power Down input (PD), which can put the device into standby mode (PD=1) while mobile, eliminating an external power switch.

Generally, this part can be used to replace mechanical relays in low-voltage LAN applications that interface a physical layer over CAT 5 or CAT 6 unshielded twisted pair cable through an isolation transformer.


  • 1:2 Gigabit LAN Switch
  • Power-down support
  • Low bit-to-bit skew: 200ps
  • Very Low Crosstalk: –53dB @ 400MHz
  • Status Indicator LEDs Switched with Ethernet pairs
  • VDD Operating Range: +3.0V to +3.6V
  • Enhanced ESD Protection (on A, B, C, LED pins):
    • 1.0kV (CDM), 4kV (HBM)
  • 3GHz Bandwidth
  • Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
  • Halogen and Antimony Free. “Green” Device (Note 3)
  • Packaging: 
    • 42-contact TQFN (3.5 x 9mm, 0.5 pitch)


  • Dual Physical Layer Device sharing to one interface connector, or one controller to dual connectors for docking
  • Routes signals for 1000/2500/10000 Mbit Ethernet

Product Specifications

Product Parameters

Analog or Digital? Analog
Configuration Mux: Quad 4-Channel
Differential Channels 8
Signal Type N/A
Type N/A
Voltage 3
Temperature (c) -40 to 85

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Application information, Evaluation board, and Other technical documents

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