Diodes Menu Close
Back to Bus Switches


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

NOTE: Datasheet may not yet reflect updated package obsolescence/phase out status or Package Drawing. Please refer to the PRODUCT OPTIONS 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.
Contact Sales

Log in or register to manage email notifications about changes to datasheets or PCNs for this part.

Product Description

The PI3C3125 and the PI3C3126 are 2.5 volt or 3.3 volt, 4-bit bus switches 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 PI3C3125 device has active LOW enables, and 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)
  • Rail-to-Rail, or 2.5V or 3.3V Switching
  • 5V I/O Tolerant
  • 2.5V Supply Voltage Operation
  • Permits Hot Insertion
  • Packaging (Pb-free & Green available):
    • 14-pin 150-mil wide plastic SOIC (W)
    • 14-pin 170-mil wide plastic TSSOP (L)
    • 16-pin 150-mil wide plastic QSOP (Q)
  • 16-contact TFDN (ZJ)


  • 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 5

Technical Documents

Recommended Soldering Techniques


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

Request Documents
Orderable Part Number Status Package Environmental Compliance Packing Buy from Distributor /
Contact Sales
Request Samples
Qty. Carrier
PI3C3125LE Obsolete TSSOP-14 LFGP 96 TUBE
PI3C3125LEX Active TSSOP-14 TPGP 2500 T&R


Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
Mouser Electronics Inc. 10389 11/30/2022 South America, North America, Asia, Europe, Middle East Buy Now
Future Electronics 7500 11/29/2022 Canada Buy Now
Request Sample
PI3C3125QE Active QSOP-16 GREEN 97 TUBE Contact Sales Request Sample
PI3C3125QEX Active QSOP-16 GREEN 2500 T&R Contact Sales Request Sample
PI3C3125WE Active SO-14 GREEN 55 TUBE


Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
Digi-Key Electronics 214 11/29/2022 Europe, Asia, North America Buy Now
Request Sample
PI3C3125WEX Active SO-14 GREEN 2500 T&R Contact Sales Request Sample

Environmental Compliance Legend:
LFF: Pb-Free Finish and RoHS 5/6
TLFP: Totally Pb-Free Product and RoHS 6/6
LFGP: Pb-free Finish and Green Product, RoHS 5/6 and Halogen Free
TPGP: Totally Pb-Free and Green Product, RoHS 6/6 and Halogen Free
GREEN: Halogen-free and RoHS compliant
RoHS: RoHS compliant but NOT halogen-free