• ADUM140E Output Disable/Enable Propagation Delay

    Dear Sir,

    Our customer would like to know typical and maximum specifications of Output Disable/Enable Propagation Delay for ADUM140E.

    According to ADUM1400 datasheet, some specifications of them are described. Are there any specifications for ADUM140E?


  • Replace Si8645 with ADuM140E


    I'm a DFAE in Japan. Our customers are trying to replace the Si8645 with the ADuM140E. Therefore, I am receiving the following two questions by him.
    1. Input terminal hysteresis characteristic Vhys
    2. Output impedance Zo
    Both of the above specifications…

  • RE: ADUM1400 to ADUM140E

    Hi Gudjon, 

    It would be generally expected that the latest generation of standard data isolators (of which ADuM140E is part) would have less emissions. The devices are designed with different architectures and output stages though. 

    There are many factors…

  • ADuM140E pull up


    Our customer asks below question  about ADuM140E  because he will set  enable pin to OPEN .

    Please let me know your advice.


    Datasheet describes that EN pin of ADuM140E can be opne.

    Does this contain internal pull-up resistor ?

    If so, could…

  • ADuM140 input following behaviour

    I am looking for an isolator that operates with Vdd1=2.5V and Vdd2=3.3V. (Vdd1 side has 2.5V logic levels)

    In the datasheets for ADuM1400 and 3480 I read that the output goes to a default state when no transitions occur on the input within 5us.

    I want…

  • (ADuM140)Supply current with OOK.

    Hi !

    I saw the datasheet about ADuM140.


    For example , ADuM140D/E's supply current is this.


    I think this data is 50%-duty.

    Is it correct…

  • Can ADuM140 and ADuM 220 work as level shifter as well?


    Beside isolation, can ADuM140 and ADuM 220 work as level shifter as well?   For example VDD1 as 1.8V, VDD2 as 5V or 3.3V.



  • RE: ADuM140D1BRQZ 替代



  • RE: ADuM1400 VDD2-GND2 voltages when VDD2 is NOT supplied

    Thank you for your reply.

    I like to confirm one more thing.

    the customer said as follows.

    Is this the same reason and can he fix this problem when he use ADuM140E or ADuM1440?

    He supplied 3.3V between VDD2 and GND2.

    when he measured the voltage between…

  • RE: About ADUM140E0BRZ layout suggestion

    The following article shows the stack-up used for a six-layer board with multiple ADuM5411 devices, and may be a useful reference.


    I'd also…