Signetics

Signetics was an American electronics pioneer, it was the first electronics manufacturer specifically established to make integrated circuits. Founded in 1961, they went on to develop a number of early microprocessors and support chips, as well as the widely used 555 timer chip. They were bought by Philips in 1975 and incorporated in Philips Semiconductors (now NXP).

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NE555N

Timer NE555N
$0.45

NE572N

Programmable analog compandor
$3.74