17 Aug
2012
17 Aug
'12
9:56 a.m.
On 17 Aug 2012 at 6:45, dwight elvey wrote:
Hi
Atually SE555, not NE555 that was a licenced copy.
Dwight
Hi Dwight,
Are you certain? My Signetics Linear databooks indicate that the SE
part was the mil-spec, extended-temperature range version of the
commercial grade NE555. (If you look at the 1972 ("advance notice")
datasheet, it's funny--the temperature range for the SE555 is given
as -55 to +12.5 degrees! Little typo there.)
Signetics follwed this convention with their other lines. For
example, the TTL family was S5400/N7400.
--Chuck