Company Pedigree
| Ascendant Companies | Descendant Companies | ||
| Company | Comments | Company | Comments |
| Texas Instruments | Founded by L. J. Sevin and other TI employees in 1969. | Dallas Semiconductor | Founded by Vin Prothro in 1984. |
| SGS-ATES | United Technologies bought Mostek in 1980, then sold Mostek to SGS-ATES in 1981. | ||
| Cypress Semiconductor | Co-founder and Chairman, L. J. Sevin, in 1982 | ||
Company Overview
Mostek was founded in 1969 by former employees of Texas Instruments. Mostek made logic, memory, and microprocessor chips. Mostek’s microprocessors were second source versions of the Zilog Z80 and the Fairchild F8. United Technologies bought Mostek in 1983 and sold Mostek to SGS-ATES in 1985. Mostek produced full lines of the Z80 and its support chips.
Chip Identification
Mostek Chips
| Microprocessors | |
| CPU’s | |
| MCU’s | |
| Bit-Slice | |
| Coprocessors | |
| 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 | Fairchild F8 (3850), Zilog Z80 (Zilog 8400 = MK3880) |
| MCU’s | |
| Bit-Slice | |
| Memory Devices | |
| RAM | |
| ROM | |
| PROM | |
| EPROM | |
| EEPROM | |
| CCD Memory | |
| Bubble Memory | |
| General Use Support Chips | |
| Shift Registers | |
| Interfaces | |
| Communications | |