| CD4528BCN | | part details | | FSC | | 0124 | | Ships Today | | 22 |
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| HEF4521BP | | part details | | Philips / Mepco | | | Avail | | 1848 |
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| HEF4521BP | | part details | | PHILIPS | | | Avail | | 1685 |
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| HEF4521BP | | part details | | PHILIPS SEMICONDUCTORS | | | Avail | | 975 |
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| HEF4521BP | | part details | | PHILIPS | | 9141 | | Avail | | 338 |
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| CD4521BPW | | part details | | Texas Instruments | | | Avail | | 265 |
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| HEF4521BP | | part details | | PHILIPS | | | Avail | | 197 |
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| TC4521BP | | part details | | Toshiba | | 8348, 85 | | Avail | | 138 |
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| HEF4521BP | | part details | | PHILIP | | 85+ | | Avail | | 131 |
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| HEF4521BP | | part details | | PHILIPS 8910 | | | Avail | | 129 |
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| HEF4521BP | | part details | | PHILIPS 8649 | | | Avail | | 112 |
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| HEF4521BP | | part details | | SIGNETICS | | | Avail | | 110 |
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