SI5345_16 Datasheet, PDF (55/60 Pages) Silicon Laboratories – 10-Channel, Any-Frequency, Any-Output Jitter Attenuator/ Clock Multiplier

12. Top Marking
Si5345/44/42 Rev D Data Sheet
Top Marking
Figure 12.1. Si5345/44/42 Top Marking
Line
1
2
3
4
Table 12.1. Top Marking Explanation
Characters
Description
Base part number and Device Grade for Any-frequency, Any-output, Jitter
Cleaning Clock (single PLL):
Si534fg-
f = 5: 10-output Si5345: 64-QFN
f = 4: 4-output Si5344: 44-QFN
f = 2: 2-output Si5342: 44-QFN
Rxxxxx-GM
YYWWTTTTTT
Circle w/ 1.6 mm (64-QFN) or 1.4
mm (44-QFN) diameter
e4
TW
g = Device Grade (A, B, C, D). See 2. Ordering Guide for more information.
– = Dash character.
R = Product revision. (Refer to 2. Ordering Guide for latest revision).
xxxxx = Customer specific NVM sequence number. Optional NVM code as-
signed for custom, factory pre-programmed devices.
Characters are not included for standard, factory default configured devices.
See 2. Ordering Guide for more information.
-GM = Package (QFN) and temperature range (–40 to +85 °C)
YYWW = Characters correspond to the year (YY) and work week (WW) of
package assembly.
TTTTTT = Manufacturing trace code.
Pin 1 indicator; left-justified
Pb-free symbol; Center-Justified
TW = Taiwan; Country of Origin (ISO Abbreviation)
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