Voltage converting I/O driver circuit

Details Voltage converting I/O driver circuit Voltage converting I/O driver circuit

1996-10-18

1998-10-06

Ray, Gopal C.

Electronic digital logic circuitry

Multifunctional or programmable

Array

326 57, 326 68, 326 83, 327333, G06F 126

Patent

active

058190996

ABSTRACT:
A digital data signal voltage converter for converting a first digital data signal that is asserted at a first pair of voltage levels that are considered the inverse of one another, the two voltage levels being a first low voltage level and a first high voltage level, to a second digital data signal that is asserted at a second pair of voltage levels that are considered the inverse of one another, the second pair of voltage levels being a second low voltage level and a second high voltage level, the second high voltage level being higher than the first high voltage level. The voltage converter includes an active pull-up transistor and an active pull-down transistor, along with circuitry for controlling the second high voltage level. Three-state control may be provided to allow use as an input/output terminal.

REFERENCES:
patent: 4926070 (1990-05-01), Tanaka et al.
patent: 5341045 (1994-08-01), Almulla
patent: 5399920 (1995-03-01), Van Tran
patent: 5408147 (1995-04-01), Yarbrough et al.
patent: 5422523 (1995-06-01), Roberts et al.
patent: 5490119 (1996-02-01), Sakurai et al.
patent: 5559464 (1996-09-01), Orii et al.
patent: 5687122 (1997-11-01), Merritt

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