Diodes Incorporated
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Quad 3-State Buffer, OE LOW

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The 74AHC125 provides provides four independent buffer gates with 3-state outputs. Each buffer has a separate enable pin that when driven with a high logic level places the corresponding output in the high impedance state. The device is designed for operation with a power supply range of 2.0V to 5.5V. The inputs are tolerant to 5.5V allowing this device to be used in a mixed voltage environment.


  • General Purpose Logic
  • Wide array of products such as: - PCs, networking, notebooks, netbooks - Computer peripherals, hard drives, CD/DVD ROM - TV, DVD, DVR, set top box
  • Product Specifications

    Product Parameters

    Number of Gates 4
    Family AHC
    VCC Min (V) 2 V
    VCC Maximum Rating 5.5 V
    tpd max @ (1.5V) - ns
    tpd max @ 1.8V (ns) - ns
    tpd max @ 2.5V (ns) 5.5 ns
    tpd max @ 3.3V (ns) 8 ns
    tpd max @ 5.0V (ns) 5.5 ns
    Input/ Output Current 8
    Description QUAD 2 Input 3-State Buffer OE Low
    Output Type 3-State

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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-2512 2021-04-16 2021-07-16 Qualified Additional Assembly & Test (A/T) Site