| 54F251ADMQB | | part details | | FSC | | 8606 | | Avail | | 500 |
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| |
| 54F257A | | part details | | TI | | | Avail | | 300 |
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| |
| 54F257 | | part details | | MOT | | | Avail | | 286 |
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| 54F251ADMQB | | part details | | NATIONAL SEMI | | 9302 | | Avail | | 249 |
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| 54F257A/B2A | | part details | | FSC | | 88+ | | Avail | | 248 |
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| |
| 54F257ADM | | part details | | National Semiconductor | | | Avail | | 182 |
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| 54F251ADMQB | | part details | | NAT | | | Avail | | 182 |
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| |
| 54F257A/BFA | | part details | | SIG | | 87+ | | Avail | | 159 |
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| 54F251ADMQB | | part details | | Fairchild Semiconductor | | 8533 | | Avail | | 149 |
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| |
| 54F251ADMQB | | part details | | NSC | | | Avail | | 141 |
| |
| |
| 54F251ADMQB | | part details | | NATIONL | | | Avail | | 129 |
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| |
| 54F251ADMQB | | part details | | NSC | | 96 | | Avail | | 122 |
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