Clock schematic diagrams and data sheets for the MM5314N Clock Chip are available on the internet by searching Google or Bing.
The MM5314N clock chip was used in many cool LED clock kit designs from the 1970's through the 1990's!
The National Semiconductor MM5314N is a well known Clock Chip IC manufactured during the 1970's and 1980's. It is out of production and very scarce, but we have obtained a few to sell for those looking for this classic clock chip. The MM5314 is very easy to implement as a six digit LED digital clock.
LED six digit clock chip with hours, minutes, and seconds!
Multiplexed seven segment display outputs
12 or 24 hour clock formats
50 or 60 Hertz operation
Fast and Slow time set controls, with seconds Hold
Data sheet is available at DataSheetArchive.com - search for "MM5314N" and be sure to scroll down for the results!
Video Below: Here's a classic digital clock kit from the 1970's which used the MM5314N.
We also sell a cool microcontroller based LED Digital Clock Kit - the CK-1K. Check it out!