| Electronic component: | Description: | Manuf. | Package | Pins | T°min | T°max | Datasheet |
|---|
| 74HCT640D | Octal bus transceiver; 3-state; inverting | Philips-Semiconductors | SOT163 | - | - | - | 47 K |
| 74HCT640DB | Octal bus transceiver; 3-state; inverting | Philips-Semiconductors | SOT339 | - | - | - | 47 K |
| 74HCT640N | Octal bus transceiver; 3-state; inverting | Philips-Semiconductors | SOT146 | - | - | - | 47 K |
| 74HCT640U | Octal bus transceiver; 3-state; inverting | Philips-Semiconductors | - | - | - | - | 47 K |
| 74HCT646DB | Octal bus transceiver/register; 3-state | Philips-Semiconductors | SOT340 | - | - | - | 91 K |
| 74HCT646N | Octal bus transceiver/register; 3-state | Philips-Semiconductors | SOT101 | - | - | - | 91 K |
| 74HCT646U | Octal bus transceiver/register; 3-state | Philips-Semiconductors | - | - | - | - | 91 K |
| 74HCT652D | Octal bus transceiver/register; 3-state | Philips-Semiconductors | SOT137 | - | - | - | 104 K |
| 74HCT652N | Octal bus transceiver/register; 3-state | Philips-Semiconductors | SOT101 | - | - | - | 104 K |
| 74HCT670DB | 4 x 4 register file; 3-state | Philips-Semiconductors | SOT338 | - | - | - | 80 K |
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