The first commercially produced TTL micrologic chips were Sylvania ... that enabled not just the still common 4000-series CMOS logic chips (introduced by RCA in 1968), but also the microprocessors ...
Low-Voltage CMOS logic. Operating Voltage: 2 to 5.5. Compatibility: Input LVTTL/TTL, Output LVCMOS. Package Type = SOIC. Logic Function = Counter. Number of Stages ...