[sdiy] IC ID?...

[Studio 271 Productions]

Since we're on the subject of identifying ICs, I thought I'd chip in 
(pun intended, but don't we have enough puns as it is?) with a few of 
my own that I need help with:

UM9559F [16p] (Answering Machine)- Looked it up, saw stuff on sound 
generation, but no datasheet...

MC14021BCP [16p] (Phone) - Dunno what...

KIA494P [16p] (Comp. Power Supply) - PWM chip? Also have a GL494 from 
a phone, but can't see why a PWM would be needed in a PS...

CXA1019S [30p small pin spacing] (Clock/Radio) - Know it is some kind 
of radio chip, but no datasheet...

IR2425 [14p] (Unknown Source) - Have 3 of them, but have no clue what 
they are... Also says "Sharp 221c", but checked Sharp's site to no 
avail...

2061D [20p] (Unkown Source) - Got the board from someone's chemistry 
project at school, know nothing about it...

Please help if you can, and if the message seems too ungrateful for 
the viewer's eyes, I'm very sorry... I just want some help... I was 
up till 2 in the morning last night desoldering about 40 ICs from 
boards I had in a drawer, and I'll probly spend the rest of the day 
getting the components off of these same boards so I can throw them 
away and get some space back in my work area (maybe I'll even use a 
fan this time, so my eyes will stop hurting from the rosin fumes); 
Plus I'll be repainting my desktop soon, So I need the thing 
organized... Busy, busy, busy...

-271