required digital clock IC

[sanjoy]

pls let me know a digital clock IC which can display-
1. hh:mm:ss
2. continue working during power failure by backup.

with minimum component required.
Thanks

 

[Zez]

MN6053 - MN6059, MN6091 - MN6096, MN6220, MN6250 - MN6265, MM5311 - MM5387(N). Hope it will help.

 

[sanjoy]

yes it does
thanks

 

[Zez]

You're welcome.

 

[sanjoy]

ive search all ICs data sheet. here 5311 only serve my purpose. from net i found 5309-14 are nearly same. but these are not available.

 

[Nigel Goodwin]

ive search all ICs data sheet. here 5311 only serve my purpose. from net i found 5309-14 are nearly same. but these are not available.

You're looking for chips from a very LONG time ago, I wouldn't expect many clock chips to be in production these days?, or for the last 20 odd years.

 

[k7elp60]

The NTE2061 is still available from Mouser.com. I have built several clocks using this IC.