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  • 74HC125 74HCT125 74LV125 74LVC125

    74HC125; 74HCT125
    Quad buffer/line driver; 3-state

    The 74HC125; 74HCT125 is a quad buffer/line driver with 3-state outputs
    controlled by the output enable inputs (nOE).
    A HIGH on nOE causes the outputs to assume a high impedance OFF-state.
    Inputs include clamp diodes.
    This enables the use of current limiting resistors to interface inputs
    to voltages in excess of VCC.

    The 74HC125: CMOS levels
    The 74HCT125: TTL levels

    74LV125

    Quad buffer/line driver; 3-state

    The 74LV125 is a low-voltage Si-gate CMOS device that is pin and
    function compatible with 74HC125 and 74HCT125.
    The 74LV125 provides four non-inverting buffer/line drivers with 3-state outputs.
    The 3-state outputs (nY) are controlled by the output enable input (nOE).
    A HIGH at nOE causes the outputs to assume a high-impedance OFF-state.

    Wide operating voltage: 1.0 V to 5.5 V
    Optimized for low voltage applications: 1.0 V to 3.6 V
    Accepts TTL input levels between VCC = 2.7 V and VCC = 3.6 V

    74LVC125A
    Quad buffer/line driver with 5 V tolerant input/outputs; 3-state

    The 74LVC125A consists of four non-inverting buffers/line drivers
    with 3-state outputs (nY) that are controlled by the output enable input (nOE).
    A HIGH at nOE causes the outputs to assume a high-impedance OFF-state.
    Inputs can be driven from either 3.3 V or 5 V devices.
    When disabled, up to 5.5 V can be applied to the outputs.

    5 V tolerant inputs/outputs for interfacing with 5 V logic
    Wide supply voltage range from 1.2 V to 3.6 V
    CMOS low power consumption
    Direct interface with TTL levels

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  • 原文地址:https://www.cnblogs.com/shangdawei/p/3190417.html
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