| Nr. | Part Name | Description | Manufacturer by |
| 678081 | M27C256B-25XC6TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 678082 | M27C256B-25XC6TR | 256 Kbit (32Kb x 8) EPROM, 5V, 250ns | SGS Thomson Microelectronics |
| 678083 | M27C256B-25XC6X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 678084 | M27C256B-25XC7TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 678085 | M27C256B-25XC7X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 678086 | M27C256B-25XF1 | 256 Kbit (32Kb x 8) EPROM, 5V, 250ns | SGS Thomson Microelectronics |
| 678087 | M27C256B-25XF1TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 678088 | M27C256B-25XF1X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 678089 | M27C256B-25XF3 | 256 Kbit (32Kb x 8) EPROM, 5V, 250ns | SGS Thomson Microelectronics |
| 678090 | M27C256B-25XF3TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 678091 | M27C256B-25XF3X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 678092 | M27C256B-25XF6 | 256 Kbit (32Kb x 8) EPROM, 5V, 250ns | SGS Thomson Microelectronics |
| 678093 | M27C256B-25XF6TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 678094 | M27C256B-25XF6X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 678095 | M27C256B-25XF7TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 678096 | M27C256B-25XF7X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 678097 | M27C256B-25XN1 | 256 Kbit (32Kb x 8) EPROM, 5V, 250ns | SGS Thomson Microelectronics |
| 678098 | M27C256B-25XN1TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 678099 | M27C256B-25XN1TR | 256 Kbit (32Kb x 8) EPROM, 5V, 250ns | SGS Thomson Microelectronics |
| 678100 | M27C256B-25XN1X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 678101 | M27C256B-25XN3 | 256 Kbit (32Kb x 8) EPROM, 5V, 250ns | SGS Thomson Microelectronics |
| 678102 | M27C256B-25XN3TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 678103 | M27C256B-25XN3TR | 256 Kbit (32Kb x 8) EPROM, 5V, 250ns | SGS Thomson Microelectronics |
| 678104 | M27C256B-25XN3X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 678105 | M27C256B-25XN6 | 256 Kbit (32Kb x 8) EPROM, 5V, 250ns | SGS Thomson Microelectronics |
| 678106 | M27C256B-25XN6TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 678107 | M27C256B-25XN6TR | 256 Kbit (32Kb x 8) EPROM, 5V, 250ns | SGS Thomson Microelectronics |
| 678108 | M27C256B-25XN6X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 678109 | M27C256B-25XN7TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 678110 | M27C256B-25XN7X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 678111 | M27C256B-45B1 | 256 Kbit (32Kb x 8) EPROM, 5V, 45ns | SGS Thomson Microelectronics |
| 678112 | M27C256B-45B1TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 678113 | M27C256B-45B1X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 678114 | M27C256B-45B3 | 256 Kbit (32Kb x 8) EPROM, 5V, 45ns | SGS Thomson Microelectronics |
| 678115 | M27C256B-45B3TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 678116 | M27C256B-45B3X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 678117 | M27C256B-45B6 | 256 Kbit (32Kb x 8) EPROM, 5V, 45ns | SGS Thomson Microelectronics |
| 678118 | M27C256B-45B6TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 678119 | M27C256B-45B6X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 678120 | M27C256B-45B7TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
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