Diodes Incorporated
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PI3L110 (Not Recommended for New Design (NRND))

NRND = Not Recommended for New Design

3.3V, 8-Bit to 4-Bit, Mux/DeMux Ethernet LAN Switch

NOTE: Datasheet may not yet reflect updated package obsolescence/phase out status or Package Drawing. Please refer to the BUY NOW tab for the most up to date package options and drawings. Please refer to PCN/PDN tabs for most current package obsolescence/phase out status.
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Product Description

The PI3L110 is a 8- to 4-bit 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 Fast Ethernet transceiver (PHY) device to one of two corresponding 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 10/100 Base-T (Ethernet). 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. The PI3L110 is fully specified for partial-power-down applications using IOFF. The IOFF feature ensures that damaging current will not backflow thoughout the device when it is powered down. The device has isolation during Power Off.


  • RON is 4Ω typical
  • Low crosstalk: –27dB @ 250 MHz
  • Near-Zero propagation delay: 250ps
  • Switching speed: 9ns
  • Channel On capacitance: 9pF (typical)
  • VCC Operating Range: +3.0V to +3.6V
  • >2kV ESD protection (human body model)
  • >350 MHz bandwidth (or data frequency)
  • Switching on Data I/O Ports (0 to 5V)
  • IOFF supports Partial-Power-Down mode operation
  • Data and Control Inputs have Undershoot Clamp Diodes
  • Packaging (Pb-free & Green available)
    • 16-pin 150-mil wide plastic QSOP (Q)
    • 16-pin 173-mil wide plastic TSSOP (L)


  • Dual Physical Layer Device sharing to one interface connector
  • Routes signals for 10/100 Mbit Ethernet

Product Specifications

Product Parameters

Compliance(Only Automotive supports PPAP) Standard
Configuration Mux: Quad 2-Channel
Differential Channels 4
HotInsertion 0
Lanes N/A
OtherFeatures N/A
RailToRail 0
Signal Type Differential
Single Ended Channels N/A
Voltage 3

Technical Documents

Design tool model software

Recommended Soldering Techniques


Additional Technical Documents are available upon request: 
Application information, Evaluation board, and Other technical documents

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Product Change Notices (PCNs)

A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

PCN # Issue Date Implementation Date Subject
PCN-2642 2023-09-05 2024-03-05 Device End of Life (EOL)


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