Avago Technologies LSI53C140 - Manual (Page 57)

Mechanical Drawings 3-23
Ver. 2.1 Copyright © 1998–2001 by LSI Logic Corporation. All rights reserved.
3.3 Mechanical Drawings
LSI Logic component dimensions conform to a current revision of the
JEDEC Publication 95 standard package outline, using ANSI 14.5Y
“Dimensioning and Tolerancing” interpretations. As JEDEC drawings are
balloted and updated, changes may have occurred. To ensure the use of
a current drawing, the JEDEC drawing revision level should be verified.
Visit
www.eia.org/jedec for review of Publication 95 drawings and
revision levels.
For printed circuit board land patterns that will accept LSI Logic
components, LSI Logic recommends that customers refer to the IPC
standards (Institute for Interconnecting and Packaging Electronic
Circuits). Specification number IPC-SM-782, “Surface Mount Design and
Land Pattern Standard” is an established method of designing land
patterns. Feature size and tolerances are industry standards based on
IPC assumptions.