These devices consist of bus transceiver circuits with 3STATE, D-type flip-flops, and control circuitry arranged for multiplexed transmission of data directly from the input bus or from the internal registers. Data on the A or B bus will be clocked into the registers as the appropriate clock pin goes to a high logic level.
| Part Number | Manufacturer | Description |
|---|---|---|
| 74F646 | Philips Semiconductors | Octal transceiver/register |
| 74F646A | Philips Semiconductors | Octal transceiver/register |
| 74F646B | National Semiconductor | Octal Transceiver Register |
| 74F64 | Philips Semiconductors | 4-2-3-2-input AND-OR-invert gate |
| 74F640 | Philips Semiconductors | Octal Bus Transceiver |
| 74F642 | Philips Semiconductors | Transceivers |
| 74F648 | Philips Semiconductors | Octal transceiver/register |
| 74F648A | Philips Semiconductors | Octal transceiver/register |
