Schmitt trigger
US4297596A · kind A · utility
3Cited by
9References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 1, 1979 |
| Grant date | Oct 27, 1981 |
| Priority date | — |
| Expiry date | May 1, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K3/3565
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A compensated Schmitt trigger includes first and second balanced current paths between V.sub.DD and ground for establishing the Schmitt trigger's low and high output respectively. The first path includes a first small enhancement device, a second depletion device and a third enhancement device. The second path includes a fourth enchancement device and said second and third devices. Thus, each path includes two enhancement devices and one depletion device. Process variations in each path will tend to track stabilizing the difference between the low and high switching voltages.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.