XR21V1412 查看數據表（PDF） - Exar Corporation
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XR21V1412 Datasheet PDF : 24 Pages
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REV. 1.0.0
PACKAGE DIMENSIONS (32 PIN QFN - 5 X 5 X 0.9 mm)
XR21V1412
2-CH FULL-SPEED USB UART
Note: the actual center pad
is metallic and the size (D2)
is device-dependent with a
typical tolerance of 0.3mm
Note: The control dimension is in millimeter.
INCHES
SYMBOL
MIN
MAX
A
0.031
0.039
A1
0.000
0.002
A3
0.006
0.010
D
0.193
0.201
D2
0.138
0.150
b
0.007
0.012
e
0.0197 BSC
L
0.012
0.020
k
0.008
-
MILLIMETERS
MIN
MAX
0.80
1.00
0.00
0.05
0.15
0.25
4.90
5.10
3.50
3.80
0.18
0.30
0.50 BSC
0.35
0.45
0.20
-
23
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