| 74LS260N | | part details | | SIGNETICS | | 8537 | | Ships Today | | 390 |
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| 74LS20PC | | part details | | FAIR | | 8128 | | Ships Today | | 300 |
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| 74LS257AN | | part details | | SIG | | 8549 | | Ships Today | | 50 |
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| 74LS21DC | | part details | | FSC | | 8341 | | Avail | | 425 |
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| F74LS21DC | | part details | | FAIRCHI | | | Avail | | 225 |
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| 74LS21DC | | part details | | FAIR | | | Avail | | 106 |
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| 74LS21DC | | part details | | ICS | | | Avail | | 25 |
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| 74LS21DC | | part details | | FSC | | | Avail | | 25 |
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| 74LS21DCQC | | part details | | FSC | | | Avail | | 25 |
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| 74LS21DC | | part details | | FAIRCHILD 78 | | | Avail | | 16 |
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| 74LS21DC | | part details | | FAIRCHILD SEMICONDUCTOR C | | | Avail | | 15 |
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| 74LS21DC | | part details | | FAIRCHILD | | | Avail | | 12 |
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