- Type: flip-flop
- DIP: 20-pin
- Number of elements: 8
- Trigger: high
- Tri-state output
Provides eight transparent D-type latches with tri-state output. This chip has a different pin layout than 74573
| Label | Description | Signal |
|---|---|---|
| Dn | input n | active high |
| Qn | output n | active high |
| LE | latch enable | active high |
| OE | output enable | active low |
| OE | LE | Dn | Qn |
|---|---|---|---|
| L | H | H | H |
| L | H | L | L |
| L | L | X | qn0 |
| H | X | X | Z |
- H: HIGH voltage level
- L: LOW voltage level
- X: don't care
- Z: high-impedance OFF-state
- qn0: previous state of Qn
TODO
| Pin | Pin | ||
|---|---|---|---|
| OE | 1 | 20 | VCC |
| Q1 | 2 | 19 | Q8 |
| D1 | 3 | 18 | D8 |
| D2 | 4 | 17 | D7 |
| Q2 | 5 | 16 | Q7 |
| Q3 | 6 | 15 | Q6 |
| D3 | 7 | 14 | D6 |
| D4 | 8 | 13 | D5 |
| Q4 | 9 | 12 | Q5 |
| GND | 10 | 11 | LE |