| 421801 | CY7C277-40JC | 32K x 8 Reprogrammable Registered PROM | Cypress |
| 421802 | CY7C277-40KMB | 32K x 8 Reprogrammable Registered PROM | Cypress |
| 421803 | CY7C277-40LMB | 32K x 8 Reprogrammable Registered PROM | Cypress |
| 421804 | CY7C277-40PC | 32K x 8 Reprogrammable Registered PROM | Cypress |
| 421805 | CY7C277-40QMB | 32K x 8 Reprogrammable Registered PROM | Cypress |
| 421806 | CY7C277-40TMB | 32K x 8 Reprogrammable Registered PROM | Cypress |
| 421807 | CY7C277-40WC | 32K x 8 Reprogrammable Registered PROM | Cypress |
| 421808 | CY7C277-40WMB | 32K x 8 Reprogrammable Registered PROM | Cypress |
| 421809 | CY7C277-50DMB | 32K x 8 Reprogrammable Registered PROM | Cypress |
| 421810 | CY7C277-50JC | 32K x 8 Reprogrammable Registered PROM | Cypress |
| 421811 | CY7C277-50KMB | 32K x 8 Reprogrammable Registered PROM | Cypress |
| 421812 | CY7C277-50LMB | 32K x 8 Reprogrammable Registered PROM | Cypress |
| 421813 | CY7C277-50PC | 32K x 8 Reprogrammable Registered PROM | Cypress |
| 421814 | CY7C277-50QMB | 32K x 8 Reprogrammable Registered PROM | Cypress |
| 421815 | CY7C277-50TMB | 32K x 8 Reprogrammable Registered PROM | Cypress |
| 421816 | CY7C277-50WC | 32K x 8 Reprogrammable Registered PROM | Cypress |
| 421817 | CY7C277-50WMB | 32K x 8 Reprogrammable Registered PROM | Cypress |
| 421818 | CY7C281A | 1K x 8 PROM | Cypress |
| 421819 | CY7C281A-25JC | Memory : PROMs | Cypress |
|
| 421820 | CY7C281A-25PC | 1K x 8 PROM | Cypress |
| 421821 | CY7C281A-30JC | Memory : PROMs | Cypress |
| 421822 | CY7C281A-30PC | Memory : PROMs | Cypress |
| 421823 | CY7C291-25SC | Memory : PROMs | Cypress |
| 421824 | CY7C291-35SI | Memory : PROMs | Cypress |
| 421825 | CY7C291-50SI | Memory : PROMs | Cypress |
| 421826 | CY7C291A | 2K x 8 Reprogrammable PROM | Cypress |
| 421827 | CY7C291A-20JC | Memory : PROMs | Cypress |
| 421828 | CY7C291A-20PC | Memory : PROMs | Cypress |
| 421829 | CY7C291A-20SC | 2K x 8 Reprogrammable PROM | Cypress |
| 421830 | CY7C291A-20WC | 2K x 8 Reprogrammable PROM | Cypress |
| 421831 | CY7C291A-25DMB | 2K x 8 Reprogrammable PROM | Cypress |
| 421832 | CY7C291A-25JC | Memory : PROMs | Cypress |
| 421833 | CY7C291A-25LM | Memory : PROMs | Cypress |
| 421834 | CY7C291A-25LMB | 2K x 8 Reprogrammable PROM | Cypress |
| 421835 | CY7C291A-25PC | Memory : PROMs | Cypress |
| 421836 | CY7C291A-25QMB | 2K x 8 Reprogrammable PROM | Cypress |
| 421837 | CY7C291A-25SC | Memory : PROMs | Cypress |
| 421838 | CY7C291A-25TMB | 2K x 8 Reprogrammable PROM | Cypress |
| 421839 | CY7C291A-25WC | Memory : PROMs | Cypress |
| 421840 | CY7C291A-25WMB | 2K x 8 Reprogrammable PROM | Cypress |
