| Manufacturer | Part Number | Description |
|---|---|---|
Fairchild (now onsemi)
| NE558 | Quad Timer |
|
Fairchild (now onsemi)
| NE558D | Quad Timer |
Unisonic Technologies
| NE558 | QUAD TIMER |
Philipss
| NE558 | Quad timer |
|
Philipss
| NE558D | Quad timer |
|
Philipss
| NE558N | Quad timer |
