Semiconductor integrated circuit having power lines separately routed to input circuits and circuit unit using it
US6087895A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 29, 1997 |
| Grant date | Jul 11, 2000 |
| Priority date | — |
| Expiry date | Jan 29, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K19/00346
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A semiconductor integrated circuit capable of preventing propagation of noise from an output circuit to an input circuit and limiting inflow of a current caused by a protective circuit for protecting the input circuit has been disclosed. In a semiconductor integrated circuit including an input circuit 11, other circuits 12 and 13 that operate according to an output of the input circuit 11, and a plurality of power supply pins 16, 17, 18, and 19 through which a supply voltage is supplied to the input circuit 11 and other circuits 12 and 13 and to which the same supply voltage is applied, input circuit power lines 20 and 22 over which power is supplied to at least part of the input circuit 11 and general power lines 21 and 23 over which power is supplied to other circuits 12 and 13 are separated from each other. The input circuit power lines 20 and 22 and general power lines 21 and 23 are coupled to different power supply pins 16, 17, 18, and 19.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.