urgent hep needed

Hello to all the members of this forum,
as i was searching for my datahseet IC i found this forum but iam unable to find direct search datasheets so please check my following chips and if any one can tell me where to get its datasheets i will be thankful...

1. CSC9270DGP

2. ATMEL120

3) DLT8816 ( its not MT8816)

4) PS2501-2

5) 74HC595B1

6) 74HC14N ( Philips)

7)LM741CN

8) GD74HC153

i hope on this forum there is no limit of asking for datasheet...

thankyou all

A search on google or other search engine wil assist in your quest 8)

i have tried...

i am a new user of internet but i have tried google.com , altvista.com but no use...

'SC9270' DTMF Demodulator
http://www.liberal.com.hk/Products/6ic/6_1_8.htm
PS2501
http://www.americanmicrosemi.com/products/specs/PS2501-4.phtml
74HC595
**broken link removed**
74HC14
**broken link removed**
74HC153
**broken link removed**
LM741
**broken link removed**