Input circuit of semiconductor integrated circuit and semiconductor integrated circuit having input circuit
US5073726A · kind A · utility
26Cited by
5References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 30, 1990 |
| Grant date | Dec 17, 1991 |
| Priority date | — |
| Expiry date | Jul 30, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K19/00361
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
There is disclosed a semiconductor integrated circuit provided with an input circuit including an N-channel MOS transistor of which threshold voltage is set to a value lower than those of N-channel MOS transistors constituting other internal circuits of the integrated circuit. Thus, a circuit having a high operating margin for power supply noises is provided. This circuit further comprises a P-channel MOS transistor constituting a portion of a NOR gate or a NAND gate together with the above-mentioned N-channel MOS transistor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.