CS4351
9. PACKAGE DIMENSIONS
20L TSSOP (4.4 mm BODY) PACKAGE DRAWING
N
D
E1
1
A2
A1
L
E
A
∝
e
b
2
SIDE VIEW
1 2 3
END VIEW
SEATING
PLANE
TOP VIEW
INCHES
DIM
A
A1
A2
b
D
E
E1
e
L
µ
MIN
--
0.002
0.03346
0.00748
0.252
0.248
0.169
--
0.020
0°
NOM
--
0.004
0.0354
0.0096
0.256
0.2519
0.1732
--
0.024
4°
MAX
0.043
0.006
0.037
0.012
0.259
0.256
0.177
0.026
0.028
8°
MIN
--
0.05
0.85
0.19
6.40
6.30
4.30
--
0.50
0°
MILLIMETERS
NOM
--
--
0.90
0.245
6.50
6.40
4.40
--
0.60
4°
MAX
1.10
0.15
0.95
0.30
6.60
6.50
4.50
0.65
0.70
8°
NOTE
2,3
1
1
JEDEC #: MO-153
Controlling Dimension is Millimeters.
Notes:
1. “D” and “E1” are reference datums and do not included mold flash or protrusions, but do include mold mis-
match and are measured at the parting line, mold flash or protrusions shall not exceed 0.20 mm per side.
2. Dimension “b” does not include dambar protrusion/intrusion. Allowable dambar protrusion shall be 0.13 mm
total in excess of “b” dimension at maximum material condition. Dambar intrusion shall not reduce dimen-
sion “b” by more than 0.07 mm at least material condition.
3. These dimensions apply to the flat section of the lead between 0.10 and 0.25 mm from lead tips.
Parameters
Package Thermal Resistance
20L TSSOP
Symbol
θ
JA
Min
-
Typ
72
Max
-
Units
°C/Watt
36
DS566F1
CIRRUS [ CIRRUS LOGIC ]
