| 74121 | 28C256TRT1DE12 | 256K EEPROM (32K x 8-bit) - EEPROM | Maxwell Technologies |
| 74122 | 28C256TRT1DE15 | 256K EEPROM (32K x 8-bit) - EEPROM | Maxwell Technologies |
| 74123 | 28C256TRT1DI12 | 256K EEPROM (32K x 8-bit) - EEPROM | Maxwell Technologies |
| 74124 | 28C256TRT1DI15 | 256K EEPROM (32K x 8-bit) - EEPROM | Maxwell Technologies |
| 74125 | 28C256TRT1DS12 | 256K EEPROM (32K x 8-bit) - EEPROM | Maxwell Technologies |
| 74126 | 28C256TRT1DS15 | 256K EEPROM (32K x 8-bit) - EEPROM | Maxwell Technologies |
| 74127 | 28C256TRT1FB12 | 256K EEPROM (32K x 8-bit) - EEPROM | Maxwell Technologies |
| 74128 | 28C256TRT1FB15 | 256K EEPROM (32K x 8-bit) - EEPROM | Maxwell Technologies |
| 74129 | 28C256TRT1FE12 | 256K EEPROM (32K x 8-bit) - EEPROM | Maxwell Technologies |
| 74130 | 28C256TRT1FE15 | 256K EEPROM (32K x 8-bit) - EEPROM | Maxwell Technologies |
| 74131 | 28C256TRT1FI12 | 256K EEPROM (32K x 8-bit) - EEPROM | Maxwell Technologies |
| 74132 | 28C256TRT1FI15 | 256K EEPROM (32K x 8-bit) - EEPROM | Maxwell Technologies |
| 74133 | 28C256TRT1FS12 | 256K EEPROM (32K x 8-bit) - EEPROM | Maxwell Technologies |
| 74134 | 28C256TRT1FS15 | 256K EEPROM (32K x 8-bit) - EEPROM | Maxwell Technologies |
| 74135 | 28C256TRT2DB12 | 256K EEPROM (32K x 8-bit) - EEPROM | Maxwell Technologies |
| 74136 | 28C256TRT2DB15 | 256K EEPROM (32K x 8-bit) - EEPROM | Maxwell Technologies |
| 74137 | 28C256TRT2DE12 | 256K EEPROM (32K x 8-bit) - EEPROM | Maxwell Technologies |
| 74138 | 28C256TRT2DE15 | 256K EEPROM (32K x 8-bit) - EEPROM | Maxwell Technologies |
| 74139 | 28C256TRT2DI12 | 256K EEPROM (32K x 8-bit) - EEPROM | Maxwell Technologies |
|
| 74140 | 28C256TRT2DI15 | 256K EEPROM (32K x 8-bit) - EEPROM | Maxwell Technologies |
| 74141 | 28C256TRT2DS12 | 256K EEPROM (32K x 8-bit) - EEPROM | Maxwell Technologies |
| 74142 | 28C256TRT2DS15 | 256K EEPROM (32K x 8-bit) - EEPROM | Maxwell Technologies |
| 74143 | 28C256TRT2FB12 | 256K EEPROM (32K x 8-bit) - EEPROM | Maxwell Technologies |
| 74144 | 28C256TRT2FB15 | 256K EEPROM (32K x 8-bit) - EEPROM | Maxwell Technologies |
| 74145 | 28C256TRT2FE12 | 256K EEPROM (32K x 8-bit) - EEPROM | Maxwell Technologies |
| 74146 | 28C256TRT2FE15 | 256K EEPROM (32K x 8-bit) - EEPROM | Maxwell Technologies |
| 74147 | 28C256TRT2FI12 | 256K EEPROM (32K x 8-bit) - EEPROM | Maxwell Technologies |
| 74148 | 28C256TRT2FI15 | 256K EEPROM (32K x 8-bit) - EEPROM | Maxwell Technologies |
| 74149 | 28C256TRT2FS12 | 256K EEPROM (32K x 8-bit) - EEPROM | Maxwell Technologies |
| 74150 | 28C256TRT2FS15 | 256K EEPROM (32K x 8-bit) - EEPROM | Maxwell Technologies |
| 74151 | 28C256TRT4DB12 | 256K EEPROM (32K x 8-bit) - EEPROM | Maxwell Technologies |
| 74152 | 28C256TRT4DB15 | 256K EEPROM (32K x 8-bit) - EEPROM | Maxwell Technologies |
| 74153 | 28C256TRT4DE12 | 256K EEPROM (32K x 8-bit) - EEPROM | Maxwell Technologies |
| 74154 | 28C256TRT4DE15 | 256K EEPROM (32K x 8-bit) - EEPROM | Maxwell Technologies |
| 74155 | 28C256TRT4DI12 | 256K EEPROM (32K x 8-bit) - EEPROM | Maxwell Technologies |
| 74156 | 28C256TRT4DI15 | 256K EEPROM (32K x 8-bit) - EEPROM | Maxwell Technologies |
| 74157 | 28C256TRT4DS12 | 256K EEPROM (32K x 8-bit) - EEPROM | Maxwell Technologies |
| 74158 | 28C256TRT4DS15 | 256K EEPROM (32K x 8-bit) - EEPROM | Maxwell Technologies |
| 74159 | 28C256TRT4FB12 | 256K EEPROM (32K x 8-bit) - EEPROM | Maxwell Technologies |
| 74160 | 28C256TRT4FB15 | 256K EEPROM (32K x 8-bit) - EEPROM | Maxwell Technologies |
