depolo@eniac.seas.upenn.edu (Jeff DePolo) (09/13/90)
I'm looking for a drop-in replacement EPROM for a TI 24SA10 PROM. The 24SA10 is also cross-referenced as: AMD 27S20 Fuji 7113E MMI 63S140 National 7610 Signetics 82S126 It's 1K (256x4) OC output PROM, 16 pins. I don't have the pinout for the chip, nor any way to look up EPROMS, so any info would be helpful. --- Jeff -- -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Jeff DePolo N3HBZ Twisted Pair: (215) 386-7199 depolo@eniac.seas.upenn.edu RF: 146.685- 442.70+ 144.455s (Philadelphia) University of Pennsylvania Carrier Pigeon: 420 S. 42nd St. Phila PA 19104
whit@milton.u.washington.edu (John Whitmore) (09/15/90)
In article <29507@netnews.upenn.edu> depolo@eniac.seas.upenn.edu (Jeff DePolo) writes: >I'm looking for a drop-in replacement EPROM for a TI 24SA10 PROM. The >24SA10 is also cross-referenced as <several different part numbers> >Signetics 82S126 >It's 1K (256x4) OC output PROM, 16 pins. This is a bipolar fuse-programmed PROM; its rated speed is 50 nanoseconds, and it's gonna be HARD to get anything that fast (or that small) in an EPROM. Best bet is a high-tech EEPROM; Xicor makes one model (X2816H) with comparable speed (70 ns guaranteed, 45 ns typical). The X2816 is a 2k by 8-bit part, so it'll take some socket conversion (make a daughterboard for the chip with a wire-wrap socket that matches the 24SA10; the wire-wrap prongs will plug into the motherboard socket). The X2816, in turn, can be programmed in most EPROM programmers (and erased, of course, electrically). Unless you're planning a LOT of changes, it'll be cheaper to buy the equivalent PROMs and program them; these parts are relatively inexpensive at $3.60 each (from Active Electronics). Active will even program them for you for an extra buck per chip, if you can generate the data in one of their favored formats. John Whitmore