What kind of IC is this

[CRC]

On 1 Dec 2008 10:54:43 -0200, Alexandre Souza wrote:

>    Of course, you can always use a 2716 or like EPROM on the place  
> of PROMs
> :o)

Actually not... A fast 2716 has an access time of 200 nsec whereas TTL  
PROMs have sub 100 nsec access times (e.g. 82S115 = 60nsec max). At  
the time, TTL PROMs were used where access speed was necessary. To  
replace them with an EPROM or EEPROM you have to go to something much  
more current.

	CRC