Bidirectional buffer having tri-state buffers for circuit isolation
US5107148A · kind A · utility
21Cited by
7References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 12, 1991 |
| Grant date | Apr 21, 1992 |
| Priority date | — |
| Expiry date | Apr 12, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/3185
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
When testing one circuit block of a device, it is desired to have isolation from the other circuit blocks of the device so as to prevent possible failure of the other circuit blocks. A block isolation buffer includes a circuit for providing predetermined voltage levels at the inputs of the circuit blocks which are not being tested thereby assuring that an undesired input does not appear at the inputs of the non-tested circuit blocks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.