Catalyst Semiconductor (CAT24/CAT25 EEPROM, CAT LED drivers and supervisors) was acquired by ON Semiconductor (now onsemi) in 2008.
Catalyst Semiconductor is now onsemi (2008). We quote Catalyst Semiconductor parts — current, obsolete and end-of-life — and parts that carry older Catalyst Semiconductor markings. See also all onsemi part numbers.
644 Catalyst Semiconductor heritage part numbers
Part-number families from Catalyst Semiconductor, listed under their current manufacturer.
Not listed? Most older Catalyst Semiconductor part numbers are not in any online catalog. Send them anyway.
Frequently asked questions
Is Catalyst Semiconductor still in business?
Catalyst Semiconductor (CAT24/CAT25 EEPROM, CAT LED drivers and supervisors) was acquired by ON Semiconductor (now onsemi) in 2008.
Can I still buy Catalyst Semiconductor parts?
Yes. PartnerSemi quotes Catalyst Semiconductor part numbers, including obsolete and end-of-life parts and parts with old Catalyst Semiconductor markings. Send the part number and quantity; we reply with price, lead time, date code and origin. We are an independent distributor, not an authorized Catalyst Semiconductor or onsemi distributor.
PartnerSemi is not affiliated with Catalyst Semiconductor or onsemi. Brand names are used to identify parts only.
