| Electronic component: | Description: | Manuf. | Package | Pins | T°min | T°max | Datasheet |
|---|
| SN74LS640N | Octal bus transceiver | Motorola | PDIP | 20 | 0°C | 70°C | 118 K |
| SN74LS641DW | Octal bus transceiver | Motorola | SOIC | 20 | 0°C | 70°C | 118 K |
| SN74LS641N | Octal bus transceiver | Motorola | PDIP | 20 | 0°C | 70°C | 118 K |
| SN74LS642DW | Octal bus transceiver | Motorola | SOIC | 20 | 0°C | 70°C | 118 K |
| SN74LS645DW | Octal bus transceiver | Motorola | SOIC | 20 | 0°C | 70°C | 118 K |
| SN74LS645N | Octal bus transceiver | Motorola | PDIP | 20 | 0°C | 70°C | 118 K |
| SN74LS669D | Synchronous 4-bit up/down counter | Motorola | SOIC | 16 | 0°C | 70°C | 213 K |
| SN74LS670D | 4 x 4 register file with 3-state outputs | Motorola | SOIC | 16 | 0°C | 70°C | 202 K |
| SN74LS670N | 4 x 4 register file with 3-state outputs | Motorola | PDIP | 16 | 0°C | 70°C | 202 K |
| SN74LS848N | 8-input ptiority encoder with 3-state outputs | Motorola | PDIP | 16 | 0°C | 70°C | 216 K |
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