| Electronic component: | Description: | Manuf. | Package | Pins | T°min | T°max | Datasheet |
|---|
| SN74LS21D | Dual 4-input AND gate | Motorola | SOIC | 14 | 0°C | 70°C | 118 K |
| SN74LS21D | DUAL 4-INPUT POSITIVE-AND GATES | Texas-Instruments | D | 14 | 0°C | 70°C | 108 K |
| SN74LS21DR | DUAL 4-INPUT POSITIVE-AND GATES | Texas-Instruments | D | 14 | 0°C | 70°C | 108 K |
| SN74LS21N | Dual 4-input AND gate | Motorola | PDIP | 14 | 0°C | 70°C | 118 K |
| SN74LS21N | DUAL 4-INPUT POSITIVE-AND GATES | Texas-Instruments | N | 14 | 0°C | 70°C | 108 K |
| SN74LS21N3 | DUAL 4-INPUT POSITIVE-AND GATES | Texas-Instruments | N | 14 | 0°C | 70°C | 108 K |
| SN74LS21NSR | DUAL 4-INPUT POSITIVE-AND GATES | Texas-Instruments | NS | 14 | 0°C | 70°C | 108 K |
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