XR17V254 Datasheet, PDF (66/70 Pages) Exar Corporation – 66MHZ PCI BUS QUAD UART WITH POWER MANAGEMENT SUPPORT

XR17V254
66MHZ PCI BUS QUAD UART WITH POWER MANAGEMENT SUPPORT
PACKAGE DIMENSIONS
144 LEAD LOW-PROFILE QUAD FLAT PACK
(20 x 20 x 1.4 mm LQFP)
D
D₁
108
73
109
72
REV. 1.0.0
D₁
D
144
37
1
A₂
e
B
A
Seating Plane
A₁
36
C
α
L
NOTE: Note: The control dimension is the millimeter column
INCHES
SYMBOL MIN
MAX
A
0.055
0.063
A1
0.002
0.006
A2
0.053
0.057
B
0.007
0.011
C
0.004
0.008
D
0.858
0.874
D1
0.783
0.791
e
0.020 BSC
L
0.018
0.030
α
0°
7°
MILLIMETERS
MIN
MAX
1.40
1.60
0.05
0.15
1.35
1.45
0.17
0.27
0.09
0.20
21.80
22.20
19.90
20.10
0.50 BSC
0.45
0.75
0°
7°
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