Signal routing circuits having selective high impedance and low impedance output states
US6087887A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 26, 1998 |
| Grant date | Jul 11, 2000 |
| Priority date | — |
| Expiry date | Aug 26, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/693
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A dual-purpose transmission circuit capable of receiving two or more signals or voltages, or a signal and a voltage, using one input pad, and an input method using the circuit. The dual-purpose transmission circuit includes an internal signal line for transmitting a signal to the inside of the semiconductor device, an internal voltage line for transmitting a voltage to the inside of the semiconductor device, a first transmission portion for connecting the internal signal line to the outside of the semiconductor device in response to a control signal, in a signal input mode, and a second transmission portion for connecting the internal voltage line to the outside of the semiconductor device in response to the control signal, in a voltage input mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.