Integrated circuit output driver incorporating power distributio

Details Integrated circuit output driver incorporating power distributio Integrated circuit output driver incorporating power distributio

1996-10-25

1998-07-28

Santamauro, Jon

Electronic digital logic circuitry

Signal sensitivity or transmission integrity

Output switching noise reduction

326 83, H03K 190948

Patent

active

057867097

ABSTRACT:
A circuit for the control of a power or ground distribution transient voltage or power bounce or ground bounce is described. The circuit has a driver transistor of a first conductivity type and a driver transistor of a second conductivity type connected so as to be able to transfer a voltage to a data output terminal from a I/O voltage distribution network or a I/O ground distribution network. As the output terminal changes from a logic 1 to a logic 0 the driver transistor of the first conductivity type will conduct and a ground distribution voltage transient will begin to appear. A suppression transistor of the first conductivity type that will begin to conduct to begin cessation of conduction of the driver transistor of the first conductivity type decreasing the slew rate of the driver transistor of the first conductivity type. As the output terminal changes from a logic 0 to a logic 1 the driver transistor of the second conductivity type will conduct and a power distribution voltage transient will begin to appear. A suppression transistor of the second conductivity type that will begin to conduct to begin cessation of conduction of the driver transistor of the second conductivity type decreasing the slew rate of the driver transistor of the second conductivity type. The transistors may be PMOS, NMOS, NPN bipolar, or PNP bipolar integrated upon a silicon or compound semiconductor substrate.

REFERENCES:
patent: 5315187 (1994-05-01), Chen
patent: 5652527 (1997-07-01), Phillips et al.
patent: 5672983 (1997-09-01), Yamamoto et al.

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