| SNJ54LS221W | | part details | | TI | | | Avail | | 86 |
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| 54LS221W/883B | | part details | | RAYT | | | Avail | | 63 |
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| DM54LS221W/883B | | part details | | NSC | | | Avail | | 29 |
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| T54LS221W14 | | part details | | TEXAS INSTRUMENTS | | | Avail | | 11 |
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| SNJ54LS221W | | part details | | TI | | | Avail | | 4 |
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| SN54LS221W | | part details | | T-I | | | Avail | | 3 |
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| SNJ54LS221W | | part details | | TI | | 8239 | | Avail | | 2 |
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| SNJ54LS221W | | part details | | TI | | 8608 | | Avail | | 2 |
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| SNJ54LS221W | | part details | | Texas Instruments | | | Avail | | 2 |
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| SNC54LS221W | | part details | | TI | | | Avail | | 1 |
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| 54LS221W/ | | part details | | TI | | | Avail | | 1 |
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| SNJ54LS221W | | part details | | T-I | | | Avail | | 1 |
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