| Electronic component: | Description: | Manuf. | Package | Pins | T°min | T°max | Datasheet |
|---|
| SN74LS221D | Dual monostable multivibrator with schmitt-trigger inputs | Motorola | SOIC | 16 | 0°C | 70°C | 193 K |
| SN74LS221N | Dual monostable multivibrator with schmitt-trigger inputs | Motorola | PDIP | 16 | 0°C | 70°C | 193 K |
| SN74LS240D | Octal buffer/line driver with 3-state outputs | Motorola | SOIC | 20 | 0°C | 70°C | 191 K |
| SN74LS240N | Octal buffer/line driver with 3-state outputs | Motorola | PDIP | 20 | 0°C | 70°C | 191 K |
| SN74LS241D | Octal buffer/line driver with 3-state outputs | Motorola | SOIC | 20 | 0°C | 70°C | 191 K |
| SN74LS241N | Octal buffer/line driver with 3-state outputs | Motorola | PDIP | 20 | 0°C | 70°C | 191 K |
| SN74LS242D | Quad bus transceiver | Motorola | SOIC | 14 | 0°C | 70°C | 171 K |
| SN74LS244D | Octal buffer/line driver with 3-state outputs | Motorola | SOIC | 20 | 0°C | 70°C | 191 K |
| SN74LS244N | Octal buffer/line driver with 3-state outputs | Motorola | PDIP | 20 | 0°C | 70°C | 191 K |
| SN74LS28N | Quad 2-input NOR buffer | Motorola | PDIP | 14 | 0°C | 70°C | 121 K |
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