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SN74LVCH244A: Input Voltage Rise time and Fall time

Part Number: SN74LVCH244A
Other Parts Discussed in Thread: SN74LVCZ244A

Can you please share the rise time and fall time of the input voltage supply pin VCC.

  • Hi Shubin,

    There is no spec for the ramp up / ramp down rates of the Vcc supply pin.
    The input signals must have a transition rate of 10ns/V as per the recommended operating conditions of the datasheet.

    There are different categories of devices with level 2 isolation enabling Hi-Z on the outputs until valid Vcc level is achieved.
    To ensure that the Vcc has to ramp up at a certain min rate. For eg in the SN74LVCZ244A, the min Vcc ramp rate is 150us/V.