Bipolar digital peripheral driver transistor circuit
US4528463A · kind A · utility
8Cited by
1References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 30, 1982 |
| Grant date | Jul 9, 1985 |
| Priority date | — |
| Expiry date | Jun 30, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K19/01806
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A digital driver circuit employs an output transistor having an uncommitted collector that can act as a current sink connectable to a peripheral element that is to be controlled. The base of the output transistor is coupled to a driver circuit that controls the output transistor conduction. The driver input is coupled to a pair of cascaded current mirrors which act to switch the driver off and on. An input stage is coupled to control the current mirrors in response to a low current logic signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.