VITESSE
SEMICONDUCTOR CORPORATION
Preliminary Datasheet
155/622 Mhz 16 Channel PRBS
Generator and Comparator.
VSC8109
Package Information
HEATSINK INTRUSION
208 PQFP Package Dimensions
NOTE 1
PIN 208
157
Key
mm
Tolerance
PIN 1
156
A
A1
A2
D
4.10
0.25
3.49
30.60
28,00
30.60
28.00
0.60
0.50
0.22
0-7°
.15
MAX
MIN
±0.10
±0.20
D1
E
±0.10
E1
E
±0.20
E1
L
±0.10
+.15/–.10
BASIC
±0.05
e
b
θ
52
105
R
TYP
53
104
R1
.25
MAX
D1
D
TOP VIEW
10°
10°
A2
e
R
R1
0° MIN
A1
Notes:
0.25
A
(1) Exposed Heatspreader will be
either 20.32 ± .50 round or
12.0 ± .50 square
θ
0.17 MAX
(2) Drawing not to scale
Package #101-228-6, Issue #1
L
b
G52207-0, Rev. 3.0
4/3/98
VITESSE SEMICONDUCTOR CORPORATION
741 Calle Plano, Camarillo, CA 93012 • 805/388-3700 • FAX: 805/987-5896
Page 17
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