| Electronic component: | Description: | Manuf. | Package | Pins | T°min | T°max | Datasheet |
|---|
| CYM74S551PM-50C | OPTi Viper Chip Set Level II Cache Module Family | Cypress-Semiconductor | - | - | - | - | 198 K |
| DM74S51N | Dual 2-Wide 2-Input AND-OR-INVERT Gate | Fairchild-Semiconductor | MDIP | 14 | - | - | 34 K |
| SN74S51D | DUAL 2-WIDE 2-INPUT AND 3-INPUT AND-NOR GATES | Texas-Instruments | D | 14 | 0°C | 70°C | 221 K |
| SN74S51DR | DUAL 2-WIDE 2-INPUT AND 3-INPUT AND-NOR GATES | Texas-Instruments | D | 14 | 0°C | 70°C | 221 K |
| SN74S51J | DUAL 2-WIDE 2-INPUT AND 3-INPUT AND-NOR GATES | Texas-Instruments | J | 14 | 0°C | 70°C | 221 K |
| SN74S51N | DUAL 2-WIDE 2-INPUT AND 3-INPUT AND-NOR GATES | Texas-Instruments | N | 14 | 0°C | 70°C | 221 K |
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