Oblon, Fisher, Spivak, McClelland & Maier
Interface circuit for converting logic signal levels
 An input terminal of an interface circuit is connected to a first logic circuit which produces a first logic signal. The interface circuit compares the first logic signal with a reference voltage whose level is set between a high level and a low level of the first logic signal. The interface circuit converts levels of the signal compared. An output terminal of the interface circuit is connected to a second logic circuit whose signal levels are different from levels of the first logic signal and which is driven by the output signal compared and amplified. 
Tokyo Shibaura Denki Kabushiki Kaisha
H H
H03K H03K
inventional inventional
Yasoji Tetsuya
Suzuki Iida