Lead frame with noisy and quiet V.sub.SS and V.sub.DD leads

Details Lead frame with noisy and quiet V.sub.SS and V.sub.DD leads Lead frame with noisy and quiet V.sub.SS and V.sub.DD leads

1995-05-30

1996-10-29

Westin, Edward P.

Electronic digital logic circuitry

Significant integrated structure, layout, or layout...

327565, 257666, 326 26, H03K 326

Patent

active

055700462

ABSTRACT:
A lead frame with separate noisy and quiet V.sub.SS leads terminating in a single pin and separate noisy and quiet V.sub.DD leads terminating in a single pin. Each noisy lead portion has a line width greater than its corresponding quiet lead portion to reduce noise in the quiet lead portion. Further, line lengths of the noisy and quiet lead portions for the V.sub.SS leads are made longer than the noisy and quiet lead portions for the V.sub.DD leads, or in other words the paddle is moved toward the V.sub.SS leads to reduce ground bounce. Additionally, the noisy and quiet leads overlie a floating conductive plane to further reduce inductance.

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