ttl@astroatc.UUCP (Tony Laundrie) (03/22/89)
Does anybody make a (256k 1Meg 4Meg) DRAM with ECL I/O? ...uwvax!astroatc!ttl ttl@astroatc.UUCP
tc@diablo.amd.com (Tom Crawford) (03/22/89)
In article <1614@astroatc.UUCP> ttl@astroatc.UUCP (Tony Laundrie) writes: > >Does anybody make a (256k 1Meg 4Meg) DRAM with ECL I/O? > ...uwvax!astroatc!ttl > ttl@astroatc.UUCP The short answer is "no, nobody makes dynamic RAMs of any size with ECL I/O". There are, however, static RAMs with ECL I/O up to 256K. Well, at least they are listed in the new IC Master. Try National NM5100. National Hmmm. Sounds like a Fairchild part to me. Well, give it a try anyway.
mark@mips.COM (Mark G. Johnson) (03/23/89)
In article <24948@amdcad.AMD.COM> tc@diablo.AMD.COM (Tom Crawford) writes: >In article <1614@astroatc.UUCP> ttl@astroatc.UUCP (Tony Laundrie) writes: >> >>Does anybody make a (256k 1Meg 4Meg) DRAM with ECL I/O? > >The short answer is "no, nobody makes dynamic RAMs of any size >with ECL I/O". There are, however, static RAMs with ECL I/O >up to 256K. Well, at least they are listed in the new IC Master. >Try National NM5100. National Hmmm. Sounds like a Fairchild >part to me. Well, give it a try anyway. It was indeed done at Fairchild, and it's an *excellent* design. Spawned quite a few copycat competitors, too -- some from the Far East and some from (blush) the usa. Rumor is that the Cray-3 uses >30,000 of these for main memory. (that wasn't a typo: 3x10^4). Dunno what Cray pays but I bet it's less than the quantity-10 price quote you might receive over the phone :-). Look at the digests of the chip design conferences; you'll find that the Japanese chips use exactly the same ECL-to-CMOS merged decoder/level shifter that Fairchild did -- only Fairchild published it two years previously and the Japanese authors "forgot" to reference the prior paper. -- -- Mark Johnson MIPS Computer Systems, 930 E. Arques, Sunnyvale, CA 94086 ...!decwrl!mips!mark (408) 991-0208