Suggested by Texas Instruments in 1980s documentation, this circuit uses a component of the era. The operating characteristics are given next to the diagram.
Figure Bellow shows how to interface CMOS circuitos with TTL using the 4049 or 4050 IC. The power...
This circuit is from a manual from the 80's and the operational one used, uncommon nowadays, can...
Based on National Semiconductor's LM4130 reference circuit, this circuit was found in Internet...