| 972121 | M54HC257KT | Rad-Hard Quad 2-Channel Multiplexer 3-State | ST Microelectronics |
| 972122 | M54HC257M1R | HC258QUAD 2CHANNEL MULTIPLEXER 3-STATE, INVERTING HC257 QUAD 2 CHANNEL MULTIPLEXER 3-STATE | SGS Thomson Microelectronics |
| 972123 | M54HC257M1R | HC258QUAD 2CHANNEL MULTIPLEXER 3-STATE, INVERTING HC257 QUAD 2 CHANNEL MULTIPLEXER 3-STATE | ST Microelectronics |
| 972124 | M54HC258 | HC258 QUAD 2 CHANNEL MULTIPLEXER (3-STATE, INVERTING) HC257 QUAD 2 CHANNEL MULTIPLEXER (3-STATE) | SGS Thomson Microelectronics |
| 972125 | M54HC258 | HC258QUAD 2CHANNEL MULTIPLEXER 3-STATE/ INVERTING HC257 QUAD 2 CHANNEL MULTIPLEXER 3-STATE | ST Microelectronics |
| 972126 | M54HC258B1R | HC158 QUAD 2 CHANNEL MULTIPLEXER INV. HC157 QUAD 2 CHANNEL MULTIPLEXER | SGS Thomson Microelectronics |
| 972127 | M54HC258B1R | HC258QUAD 2CHANNEL MULTIPLEXER 3-STATE, INVERTING HC257 QUAD 2 CHANNEL MULTIPLEXER 3-STATE | ST Microelectronics |
| 972128 | M54HC258B1R | HC158 QUAD 2 CHANNEL MULTIPLEXER INV. HC157 QUAD 2 CHANNEL MULTIPLEXER | ST Microelectronics |
| 972129 | M54HC258C1R | HC158 QUAD 2 CHANNEL MULTIPLEXER INV. HC157 QUAD 2 CHANNEL MULTIPLEXER | SGS Thomson Microelectronics |
| 972130 | M54HC258C1R | HC258QUAD 2CHANNEL MULTIPLEXER 3-STATE, INVERTING HC257 QUAD 2 CHANNEL MULTIPLEXER 3-STATE | ST Microelectronics |
| 972131 | M54HC258C1R | HC158 QUAD 2 CHANNEL MULTIPLEXER INV. HC157 QUAD 2 CHANNEL MULTIPLEXER | ST Microelectronics |
| 972132 | M54HC258F1R | HC158 QUAD 2 CHANNEL MULTIPLEXER INV. HC157 QUAD 2 CHANNEL MULTIPLEXER | SGS Thomson Microelectronics |
| 972133 | M54HC258F1R | HC158 QUAD 2 CHANNEL MULTIPLEXER INV. HC157 QUAD 2 CHANNEL MULTIPLEXER | ST Microelectronics |
| 972134 | M54HC258F1R | HC258QUAD 2CHANNEL MULTIPLEXER 3-STATE, INVERTING HC257 QUAD 2 CHANNEL MULTIPLEXER 3-STATE | ST Microelectronics |
| 972135 | M54HC258M1R | HC158 QUAD 2 CHANNEL MULTIPLEXER INV. HC157 QUAD 2 CHANNEL MULTIPLEXER | SGS Thomson Microelectronics |
| 972136 | M54HC258M1R | HC158 QUAD 2 CHANNEL MULTIPLEXER INV. HC157 QUAD 2 CHANNEL MULTIPLEXER | ST Microelectronics |
| 972137 | M54HC258M1R | HC258QUAD 2CHANNEL MULTIPLEXER 3-STATE, INVERTING HC257 QUAD 2 CHANNEL MULTIPLEXER 3-STATE | ST Microelectronics |
| 972138 | M54HC259 | 8 BIT ADDRESSABLE LATCH | SGS Thomson Microelectronics |
| 972139 | M54HC259 | 8 BIT ADDRESSABLE LATCH | ST Microelectronics |
|
| 972140 | M54HC259F1R | 8 BIT ADDRESSABLE LATCH | SGS Thomson Microelectronics |
| 972141 | M54HC259F1R | 8 BIT ADDRESSABLE LATCH | ST Microelectronics |
| 972142 | M54HC259KG | Rad-Hard 8-bit Adressable Latch | ST Microelectronics |
| 972143 | M54HC259KT | Rad-Hard 8-bit Adressable Latch | ST Microelectronics |
| 972144 | M54HC266 | HC7266 QUAD EXCLUSIVE NOR GATE HC266 QUAD EXCLUSIVE NOR GATE WITH OPEN DRAIN | SGS Thomson Microelectronics |
| 972145 | M54HC266 | HC266 QUAD EXCLUSIVE NOR GATE WITH OPEN DRAIN HC7266 QUAD EXCLUSIVE NOR GATE | ST Microelectronics |
| 972146 | M54HC266B1R | HC266 QUAD EXCLUSIVE NOR GATE WITH OPEN DRAIN HC7266 QUAD EXCLUSIVE NOR GATE | SGS Thomson Microelectronics |
| 972147 | M54HC266B1R | HC266 QUAD EXCLUSIVE NOR GATE WITH OPEN DRAIN HC7266 QUAD EXCLUSIVE NOR GATE | ST Microelectronics |
| 972148 | M54HC266C1R | HC266 QUAD EXCLUSIVE NOR GATE WITH OPEN DRAIN HC7266 QUAD EXCLUSIVE NOR GATE | SGS Thomson Microelectronics |
| 972149 | M54HC266C1R | HC266 QUAD EXCLUSIVE NOR GATE WITH OPEN DRAIN HC7266 QUAD EXCLUSIVE NOR GATE | ST Microelectronics |
| 972150 | M54HC266F1R | HC266 QUAD EXCLUSIVE NOR GATE WITH OPEN DRAIN HC7266 QUAD EXCLUSIVE NOR GATE | SGS Thomson Microelectronics |
| 972151 | M54HC266F1R | HC266 QUAD EXCLUSIVE NOR GATE WITH OPEN DRAIN HC7266 QUAD EXCLUSIVE NOR GATE | ST Microelectronics |
| 972152 | M54HC266M1R | HC266 QUAD EXCLUSIVE NOR GATE WITH OPEN DRAIN HC7266 QUAD EXCLUSIVE NOR GATE | SGS Thomson Microelectronics |
| 972153 | M54HC266M1R | HC266 QUAD EXCLUSIVE NOR GATE WITH OPEN DRAIN HC7266 QUAD EXCLUSIVE NOR GATE | ST Microelectronics |
| 972154 | M54HC27 | TRIPLE 3-INPUT NOR GATE | SGS Thomson Microelectronics |
| 972155 | M54HC27 | RAD-HARD TRIPLE 3-INPUT NOR GATE | ST Microelectronics |
| 972156 | M54HC273 | OCTAL D TYPE FLIP FLOP WITH CLEAR | SGS Thomson Microelectronics |
| 972157 | M54HC273 | RAD-HARD OCTAL D TYPE FLIP FLOP WITH CLEAR | ST Microelectronics |
| 972158 | M54HC273A | Octal D Flip-Flop with Common Clock and Reset | Motorola |
| 972159 | M54HC273D | RAD-HARD OCTAL D TYPE FLIP FLOP WITH CLEAR | ST Microelectronics |
| 972160 | M54HC273D1 | RAD-HARD OCTAL D TYPE FLIP FLOP WITH CLEAR | ST Microelectronics |
