Electronic digital logic circuitry – Signal sensitivity or transmission integrity
Patent
1999-11-16
2000-10-31
Tokar, Michael
Electronic digital logic circuitry
Signal sensitivity or transmission integrity
326 33, 326 81, 327 52, H03K 19003, H03F 345
Patent
active
061408344
ABSTRACT:
A semiconductor integrated circuit including an input circuit constituted as a single-input differential circuit which has a first MOSFET to whose gate a reception signal with a small amplitude with respect to a power supply voltage is supplied and a second MOSFET to whose gate a reference voltage corresponding to an intermediate value of the reception signal is supplied. A dummy circuit is provided and transmits substantially the same power supply noise as the power supply noise transmitted to the gate of the first MOSFET through a electrostatic protection circuit provided to an external terminal which receives the reception signal.
REFERENCES:
patent: 5019729 (1991-05-01), Kimura et al.
patent: 5023488 (1991-06-01), Gunning
patent: 5659513 (1997-08-01), Hirose et al.
patent: 5796281 (1998-08-01), Saeki et al.
Electronic-Industries-Association-of-Japan Standards, EIAJ ED-5512, Mar., 1996 (with English translation).
Cho James H
Hitachi , Ltd.
Tokar Michael
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