High voltage swing open collector driver
US4677312A · kind A · utility
6Cited by
10References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 25, 1986 |
| Grant date | Jun 30, 1987 |
| Priority date | — |
| Expiry date | Apr 25, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K19/086
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
It is well known that the base width of a transistor has a direct bearing on transistor speed and the punch-through voltage. A solution to the transistor speed versus break down (punch through) voltage problem is disclosed. Output transistors are serially connected between power supply rails along with associated transistor base driving circuitry. The circuit arrangement ensures that the supply voltage divides between the series connected output transistors and prevents excessive voltage from being applied to each output transistor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.