Description
The PI3L720 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-tochannel noise isolation and is compatible with various standards, such as 10/100/1000 Base-T (Ethernet).

Features
• 1:2 Gigabit LAN Switch
• Power-down support
• Low bit-to-bit skew: 200ps
• Very Low Crosstalk: –75dB @ 250MHz
• Status Indicator LEDs Switched with Ethernet pairs
• VDD Operating Range: +3.0V to +3.6V
• Enhanced ESD Protection (on A, B, C, LED pins):
   – 8kV (contact)(1)
   – 1.0kV (machine model),
      11kV (human body model)
• >650 MHz bandwidth
• Packaging:
   – 56-contact TQFN (5 x 11mm, 0.5 pitch)
   – 42-contact TQFN (3.5 x 9mm, 0.5 pitch)
   – 42-contact TQFN (3.5 x 7mm, 0.4 pitch)

Applications
• Dual Physical Layer Device sharing to one interface
   connector, or one controller to dual connectors for docking
• Routes signals for 10/100/1000 Mbit Ethernet