Company Pedigree
| Ascendant Companies | Descendent Companies | ||
| Company | Comments | Company | Comments |
| Fairchild Semiconductor | Founded in by four of original 8 founders of Fairchild in 1961. | Philips Semiconductor | Purchased in 1975. Philips used the Signetics brand name until 1992. |
| Cirrus Logic | Mike Hackworth, co-founded with Suhas Patil of MIT in 1984. | ||
| Intersil | Jim Riley left Signetics to become the president of Intersil | ||
Company Overview
Major Achievements
Developed Diode Transistor Logic (DTL) IC’s
World’s largest production volume IC, Signetics 555 Timer, 1972
Chip Identification
Signetics Chips
| Microprocessors | |
| CPU’s | 2650, 8X300, SCC84C |
| MCU’s | |
| Bit-Slice | |
| Memory Devices | |
| RAM | |
| ROM | |
| PROM | |
| EPROM | |
| EEPROM | |
| CCD Memory | |
| Bubble Memory | |
| General Use Support Chips | |
| Shift Registers | |
| Interfaces | |
| Communications | |
Second Sourced Chips
| Microprocessors | |
| CPU’s | |
| MCU’s | |
| Bit-Slice | |
| Memory Devices | |
| RAM | |
| ROM | |
| PROM | |
| EPROM | |
| EEPROM | |
| CCD Memory | |
| Bubble Memory | |
| General Use Support Chips | |
| Shift Registers | |
| Interfaces | |
| Communications | |