help..

Thread Starter

t23tmx@yahoo.com

Joined Apr 5, 2005
5
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?
 

hgmjr

Joined Jan 28, 2005
9,029
Originally posted by t23tmx@yahoo.com@Apr 5 2005, 01:48 PM
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?
[post=6736]Quoted post[/post]​
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.
 

Thread Starter

t23tmx@yahoo.com

Joined Apr 5, 2005
5
Originally posted by hgmjr@Apr 5 2005, 07:02 PM
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.
[post=6742]Quoted post[/post]​

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..
 

hgmjr

Joined Jan 28, 2005
9,029
Originally posted by t23tmx@yahoo.com@Apr 6 2005, 05:32 PM
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..
[post=6764]Quoted post[/post]​
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.
 

mozikluv

Joined Jan 22, 2004
1,437
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
 

Thread Starter

t23tmx@yahoo.com

Joined Apr 5, 2005
5
Originally posted by mozikluv@Apr 7 2005, 04:12 AM
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
[post=6769]Quoted post[/post]​
thanks for that..
looking forward to hear from you soon..
 

Thread Starter

t23tmx@yahoo.com

Joined Apr 5, 2005
5
Originally posted by hgmjr@Apr 6 2005, 06:06 PM
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.
[post=6765]Quoted post[/post]​
thanks for helping guys.
i hope you could help me find a solution to this problem of mine.
thank you so much..
 
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