Diodes Incorporated
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2.5V/3.3V, High-Bandwidth Bus Switch, 4-Bit, with High Enables

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 PI3C3126 is a 2.5 volt or 3.3 volt, 4-bit bus switch designed with four individual 5-ohm bus switches with fast indiviual enables in an industry standard 74XX125/126 pinout. When enabled via the associated Bus Enable pin, the “A” pin is directly connected to the “B” pin for that particular gate. The bus switch introduces no additional propagation delay or additional ground bounce noise. The PI3C3126 has active HIGH enables. It is very useful in switching signals that have high bandwidth (>400 MHz).


  • Near-Zero propagation delay
  • 5-ohm switches connect inputs to outputs
  • High Bandwidth (>400 MHz)
  • 2.5V/3.3V Supply Voltage Operation
  • Rail-to-Rail, or 2.5V or 3.3V Switching
  • 5V I/O Tolerant
  • Permits Hot Insertion
  • Packaging (Pb-free & Green available):
    • 14-pin 170-mil wide plastic TSSOP (L)
    • 16-pin 150-mil wide plastic QSOP (Q)


  • High Bandwidth Data Switching
  • Hot Docking

Product Specifications

Product Parameters

Configuration 4-Channel, 1:1
Differential Channels N/A
HotInsertion 1
Lanes N/A
OtherFeatures N/A
RailToRail 0
Signal Type Single Ended
Single Ended Channels 4
Type N/A
Voltage 3.3

Technical Documents

Recommended Soldering Techniques


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

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