Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Amplitude control
Patent
1997-12-15
1999-10-12
Cunningham, Terry D.
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Amplitude control
327313, H03K 508
Patent
active
059660384
ABSTRACT:
A circuit (100) has a pull-up transistor (110), a pull-down transistor (120), an input driver (200). The pull transistors (110, 120) pull an output line (102) to first or second reference lines (101, 103). The output line (102) can assume a potential higher than the potential at the first reference line (101). The circuit (100) further comprises protection transistors (150, 160, 170, 180). The protection transistors compare the potential at the output line (102) with the potential at the first reference line (101). The protection transistors keep a substrate line (106) of the pull-up transistor (110) at the potential of the output line (102) or at the potential of the first reference line (101), whichever is higher.
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Cunningham Terry D.
Dover Rennie W.
Handy Robert M.
Motorola Inc.
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