COM20019 Datasheet, PDF (74/81 Pages) SMSC Corporation – Low Cost ARCNET (ANSI 878.1) Controller with 2K x 8 On-Board RAM

FIGURE 23 - 48 PIN TQFP PACKAGE OUTLINE
MIN
NOMINAL
MAX
REMARK
A
~
~
1.6
Overall Package Height
A1
0.05
0.10
0.15
Standoff
A2
1.35
1.40
1.45
Body Thickness
D
8.80
9.00
9.20
X Span
D/2
4.40
4.50
4.60
1_{/2 X Span Measure from Centerline}
D1
6.90
7.00
7.10
X body Size
E
8.80
9.00
9.10
Y Span
E/2
4.40
4.50
4.60
1_{/2 Y Span Measure from Centerline}
E1
6.90
7.00
7.10
Y body Size
H
0.09
~
0.20
Lead Frame Thickness
L
0.45
0.60
0.75
Lead Foot Length from Centerline
L1
~
1.00
~
Lead Length
e
0.50 Basic
Lead Pitch
θ
0^o
~
7^o
Lead Foot Angle
W
0.17
~
0.27
Lead Width
R1
0.08
~
~
Lead Shoulder Radius
R2
0.08
~
0.20
Lead Foot Radius
74
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