1. t23tmx@yahoo.com

    Thread Starter New Member

    Apr 5, 2005
    5
    0
    hello!...
    ive got this problem of mine.
    the IC that im going to use is not available in our place.
    i just would like to ask what is the replacement for 74121N, otherwise known as one shot monostable multivibrator? i really can't find 74121 here... attached herewith is the project that im going to make.will this work?
     
  2. hgmjr

    Moderator

    Jan 28, 2005
    9,030
    214
    I don't seem to be able to open either of your posted files. Can you try to post them again?

    Here are a couple of alternate choices for the standard TTL 74121.

    74HC123
    74HC221
    CD14528

    Visit The Datasheet Archive Website where you can access the datasheets for these devices. The hc123 is a single monostable one-shot while the HC221 and the 14528 are dual monostable one-shots.
     
  3. t23tmx@yahoo.com

    Thread Starter New Member

    Apr 5, 2005
    5
    0

    tnx for that...
    i found this circuit in the internet..
    i dont know if this will work.
    its a digital clock, do you have any circuit for digital clock using 74LS90s as counter and 74LS47s as a decoder?those are the only ICs available in our place..
    il try to attach the circuit..
     
  4. hgmjr

    Moderator

    Jan 28, 2005
    9,030
    214
    I don't have a digital clock design but I would be very surpised if someone on this website can't help you locate one.

    Good Luck.
     
  5. mozikluv

    AAC Fanatic!

    Jan 22, 2004
    1,437
    1
    hi

    i could help you out if Z86E04 is available in your place. i'll try to scrounge thru my files if i have what you are asking. :D
     
  6. t23tmx@yahoo.com

    Thread Starter New Member

    Apr 5, 2005
    5
    0
    thanks for that..
    looking forward to hear from you soon..
     
  7. t23tmx@yahoo.com

    Thread Starter New Member

    Apr 5, 2005
    5
    0
    thanks for helping guys.
    i hope you could help me find a solution to this problem of mine.
    thank you so much..
     
Loading...