MOS Buffer for receiving TTL level signals
US4437025A · kind A · utility
22Cited by
6References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 29, 1981 |
| Grant date | Mar 13, 1984 |
| Priority date | — |
| Expiry date | Jul 29, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K19/018507
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An MOS buffer is described which converts TTL level signals to MOS level signals. An inverter which receives the input TTL signal is coupled to ground through a reference voltage source. This source assures that the inverter does not conduct when the TTL level signal is in its lower state. The output of the inverter is coupled to a level shifter which assures that the output of the inverter is shifted downward when the TTL signal is in its higher state. The transistors in the buffer may have short channels unlike prior art circuits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.