[TTL 74AS ICs]

Hi

I need some help finding the following TTL ICs:

74AS160, 74AS47, 74AS14, 74AS11, 74AS08, 74AS04, 74AS00.

I need these for a project but having difficulty finding the parts.

Thanks for any suggestions.


Han

[TTL 74AS IC]

Friends,

Could I have some more suggestions please.
No luck yet.

Han

[TTL 74AS IC]

Friends,

I need a maximum of 8 pieces each.
I need the ICs to do Laser project and I understand that only the AS series is fast enough for the transistion.

Han

[TTL 74AS IC]

Friends,

Sorry I was unable to respond earlier. I've been on vacation.
Thanks for the responses.

Han

[TTL 74AS IC]

Unfortunately Jameco does not list the 74AS ICs.

Han

[TTL 74AS IC]

Thanks.
I will try this source.

Han

[TTL 74AS IC]

HELLO FRIENDS

I need help finding the following ICs:74AS11, 74AS14, 74AS47,
74AS160 and 4002. Cannot find it at google, some TI and Fairchild distributors. If anyone knows where I could purchase these in small quantities I will be grateful.

Thanks
Han

[Battery back-up]

Thank you very much.
Its different from what I have but I will test it.
Once again, thank you.

Han

[Battery back-up]

Thanks again for the response.
I am looking at a DC range of 3-6 V

Han

[Battery back-up]

Thanks for the responses.
I am designing an alarm using AC input and 5VDC output from the power supply. The alarm will be activated by a non-contact input/signal. When activated, if shaken or AC removed an alarm will sound. In the deactivated mode the alarm does not sound.
I need to design a battery back-up that will allow the alarm to sound once the AC is interrupted in the activated state. I have designed a ckt. using gates, relays and transistor but I need to see other ideas of how to do a batt. back-up for the ckt.
Thanks. I hope I provided enough info.

Thanks again
Han

[Battery back-up]

I need some ideas on a battery back-up circuit that will work once a particular circuit is activated. The main power supply will be functional, but the back up ckt. will work only when the activated signal is received and the main power supply is interrupted. If the ckt. is not activated and the main power supply is interrrupted, the back-up is deactivated.

Thanks

Han