Re: Source/Cross for 74S573

In message "Source/Cross for 74S573", clayc@diamondmm.com writes:

> Hmmmm. I'm on the road today so I can't check, but I'm pretty sure the
> '573 is a relative of the '373. ICM really says the 74S573 is a PROM?
> Maybe it's a non-"TTL"-company number? (As in, it's not a TI or a NatSemi
> 74xxx.) Did ICM give a manufacturer ID for the 74S573?

The 74S573 is from the Signetics bipolar PROM series, from the '70s,
equivalent to Natl 82Sxx and Harris 54xx, etc. It's not TTL (i.e. glue).

The 74F573, as you mentioned, is a younger sibling to the '373
of late '80s vintage.

I seem to recall the F indicated the F(ast) series TTL, ironically
made by Fairchild.

Cheers,
Mark
                                                                                                                    
Received on Tue Nov 25 12:37:17 1997