BLS2/10 и другие
| Компонент | Описание | Производитель | |
| 54LS21 | Dual 4-Input AND Gates |
National Semiconductor |
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| 54LS21 | DUAL 4-INPUT POSITIVE AND GATE |
List of Unclassifed Manufacturers |
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| 54LS21DM | DUAL 4-INPUT POSITIVE AND GATE |
List of Unclassifed Manufacturers |
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| 54LS21FM | DUAL 4-INPUT POSITIVE AND GATE |
List of Unclassifed Manufacturers |
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| 74LS21 | DUAL 4-INPUT POSITIVE AND GATE |
List of Unclassifed Manufacturers |
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| 74LS21 | DUAL 4-INPUT POSITIVE-AND GATES |
Texas Instruments |
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| 74LS21 | Dual 4-input Positive AND Gates |
Hitachi Semiconductor |
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| 74LS21DC | DUAL 4-INPUT POSITIVE AND GATE |
List of Unclassifed Manufacturers |
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| 74LS21FC | DUAL 4-INPUT POSITIVE AND GATE |
List of Unclassifed Manufacturers |
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| 74LS21PC | DUAL 4-INPUT POSITIVE AND GATE |
List of Unclassifed Manufacturers |
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