82503 Datasheet, PDF (44/45 Pages) Intel Corporation – DUAL SERIAL TRANSCEIVER (DST)

82503
290421 – 51
Figure 51 Detail L Terminal Details
NOTES
The above diagrams use a 20-lead PLCC package to show symbols for package dimensions The table below indicates
dimensions in mm that are specific to the 44-lead PLCC package
1 All dimensions and tolerances conform to ANSI Y14 5M-1982
2 Datum plane H located at top of mold parting line and coincident with top of lead where lead exits plastic body
3 Datums D – E and F– G to be determined where center leads exit plastic body at datum plane H
4 To be determined at seating plane C
5 Dimensions D₁ and E₁ do not include mold protrusion
6 Pin 1 identifier is located within one of the two defined zones
7 Locations to datum A and B to be determined at plane H
8 These two dimensions determine maximum angle of the lead for certain socket applications If unit is intended to be
socketed it is advisable to review these dimensions with the socket supplier
9 Controlling dimension inch
10 All dimensions and tolerances include lead trim offset and lead plating finish
11 Tweezing surface planarity is defined as the furthest any lead on a side may be from the datum The datum is estab-
lished by touching the outermost lead on that side and parallel to D –E or F –G
Symbol
Description
Min
Max
A
Overall Height
4 19
4 57
A₁
Distance from Lead Shoulder to Seating Plane
2 29
3 05
D
Overall Package Dimension
17 4
17 7
D₁
Plastic Body Dimension
D₂
Foot Print
E
Overall Package Dimension
16 5
16 7
15 0
16 0
17 4
17 7
E₁
Plastic Body Dimension
E₂
Foot Print
CP
Seating Plans Coplanarity
16 5
16 7
15 0
16 0
0 00
0 10
TCP
Tweezing Coplanarity
0 00
0 10
LT
Lead Thickness
0 23
0 38
44