74670
4 by 4 register file; 3-state
PDF datasheet
| | | | |
| D1 | 1 • | 16 | Vcc |
| D2 | 2 | 15 | D0 |
| D3 | 3 | 14 | WA |
| RB | 4 | 13 | WB |
| RA | 5 | 12 | WE |
| Q3 | 6 | 11 | RE |
| Q2 | 7 | 10 | Q0 |
| GND | 8 | 9 | Q1 |
| | | | |
| Pin | Symbol | Description |
|---|
| 1 | D1 | data input |
| 2 | D2 | data input |
| 3 | D3 | data input |
| 4 | RB | read address input |
| 5 | RA | read address input |
| 6 | Q3 | data output |
| 7 | Q2 | data output |
| 8 | GND | ground |
| 9 | Q1 | data output |
| 10 | Q0 | data output |
| 11 | RE | 3-state output read enable (active low) |
| 12 | WE | write enable (active low) |
| 13 | WB | write address input |
| 14 | WA | write address input |
| 15 | D0 | data input |
| 16 | Vcc | supply voltage |
Specifications
(typical values under recommended operating conditions, unless specified)| Parameter | Value | Unit |
|---|
| Propagation delay, Dn to Qn | 23 (74HC/HCT] | ns |
Note: Data is maintained by an independent source and accuracy is not guaranteed. Check with the manufacturer's datasheet for up-to-date information.