I took apart this old, white alarm clock and there's a small, DIP-8 IC in there with "HWCAT 714C6A CSC2822" written on it. I've tried searching for a datasheet, but I can't find one. I can find some references to the part itself (on some Chinese parts sources), but nothing about what it is or how it can be used.
Using the site in the other answer I discovered its an opamp for audio. Here is the information I got:
HWD02 CSC 2822P/2822m 双声道功率放大 TDA2822P/TDA2822M DIP8/SOP8
Then I recognised the TDA2822 to be some form of audio opamp and you can pull a datasheet from another manufacturer. Here is the datasheet from STs version.
双声道功率放大 translates to: Two-channel power amplifier this just confirms that its a reproduction of the original part.
HWCAT seems to have a web site and have a contact us section there. You could try contacting them for a datasheet. http://www.hwcat.com/EN/ProductsList.aspx?id=21&cid=2
Looking at their product nomenclature, I am tempted to think of the 8 pin DIP IC as a clone of the uA741 operational amplifier.
What part of the circuit did you find the IC? What other components was it connected to. Does the circuit make sens if you assume it's pinout to be that of uA741?