| 925721 | M27C4001-55XF6TR | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925722 | M27C4001-55XF6X | 4 Mbit (512Kb x 8) EPROM, 55ns | SGS Thomson Microelectronics |
| 925723 | M27C4001-55XF6X | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925724 | M27C4001-55XL1TR | 4 Mbit (512Kb x 8) EPROM, 55ns | SGS Thomson Microelectronics |
| 925725 | M27C4001-55XL1TR | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925726 | M27C4001-55XL1X | 4 Mbit (512Kb x 8) EPROM, 55ns | SGS Thomson Microelectronics |
| 925727 | M27C4001-55XL1X | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925728 | M27C4001-55XL6TR | 4 Mbit (512Kb x 8) EPROM, 55ns | SGS Thomson Microelectronics |
| 925729 | M27C4001-55XL6TR | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925730 | M27C4001-55XL6X | 4 Mbit (512Kb x 8) EPROM, 55ns | SGS Thomson Microelectronics |
| 925731 | M27C4001-55XL6X | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925732 | M27C4001-55XN1TR | 4 Mbit (512Kb x 8) EPROM, 55ns | SGS Thomson Microelectronics |
| 925733 | M27C4001-55XN1TR | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925734 | M27C4001-55XN1X | 4 Mbit (512Kb x 8) EPROM, 55ns | SGS Thomson Microelectronics |
| 925735 | M27C4001-55XN1X | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925736 | M27C4001-55XN6TR | 4 Mbit (512Kb x 8) EPROM, 55ns | SGS Thomson Microelectronics |
| 925737 | M27C4001-55XN6TR | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925738 | M27C4001-55XN6X | 4 Mbit (512Kb x 8) EPROM, 55ns | SGS Thomson Microelectronics |
| 925739 | M27C4001-55XN6X | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
|
| 925740 | M27C4001-70B1TR | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925741 | M27C4001-70B1X | 4 Mbit (512Kb x 8) EPROM, 70ns | SGS Thomson Microelectronics |
| 925742 | M27C4001-70B1X | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925743 | M27C4001-70B6TR | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925744 | M27C4001-70B6X | 4 Mbit (512Kb x 8) EPROM, 70ns | SGS Thomson Microelectronics |
| 925745 | M27C4001-70B6X | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925746 | M27C4001-70C1 | 4 MBIT (512KB X8) UV EPROM AND OTP ROM | ST Microelectronics |
| 925747 | M27C4001-70C1TR | 4 Mbit (512Kb x 8) EPROM, 70ns | SGS Thomson Microelectronics |
| 925748 | M27C4001-70C1TR | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925749 | M27C4001-70C1X | 4 Mbit (512Kb x 8) EPROM, 70ns | SGS Thomson Microelectronics |
| 925750 | M27C4001-70C1X | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925751 | M27C4001-70C6TR | 4 Mbit (512Kb x 8) EPROM, 70ns | SGS Thomson Microelectronics |
| 925752 | M27C4001-70C6TR | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925753 | M27C4001-70C6X | 4 Mbit (512Kb x 8) EPROM, 70ns | SGS Thomson Microelectronics |
| 925754 | M27C4001-70C6X | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925755 | M27C4001-70F1TR | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925756 | M27C4001-70F1X | 4 Mbit (512Kb x 8) EPROM, 70ns | SGS Thomson Microelectronics |
| 925757 | M27C4001-70F1X | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925758 | M27C4001-70F6TR | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925759 | M27C4001-70F6X | 4 Mbit (512Kb x 8) EPROM, 70ns | SGS Thomson Microelectronics |
| 925760 | M27C4001-70F6X | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
