NS16C2552_17 Datasheet, PDF (50/53 Pages) Texas Instruments – Dual Independent UART

FN0044A
EXAMPLE BOARD LAYOUT
PLCC - 4.57 mm max height
PLASTIC CHIP CARRIER
44X (.093 )
[2.35]
6
7
44X (.030 )
[0.75]
SYMM
SYMM
1 44
40
39
(.64 )
[16.2]
40X (.050 )
[1.27]
17
(R.002 ) TYP
[0.05]
18
(.64 )
[16.2]
29
28
LAND PATTERN EXAMPLE
EXPOSED METAL SHOWN
SCALE:4X
.002 MAX
[0.05]
ALL AROUND
EXPOSED METAL
.002 MIN
[0.05]
ALL AROUND
EXPOSED METAL
METAL
SOLDER MASK
OPENING
NON SOLDER MASK
DEFINED
(PREFERRED)
SOLDER MASK
OPENING
METAL UNDER
SOLDER MASK
SOLDER MASK
DEFINED
SOLDER MASK DETAILS
NOTES: (continued)
5. Publication IPC-7351 may have alternate designs.
6. Solder mask tolerances between and around signal pads can vary based on board fabrication site.
4215154/A 04/2017
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