SI554 Datasheet, PDF (13/15 Pages) Silicon Laboratories – QUAD FREQUENCY VOLTAGE-CONTROLLED CRYSTAL

6. Top Marking
6.1. Si554 Top Marking
Si554
6.2. Top Marking Explanation
Line
1
2
3
Position
1–10
1–10
Trace Code
Position 1
Position 2
Position 3–6
Position 7
Position 8–9
Position 10
Description
“SiLabs”+ Part Family Number, 554 (First 3 characters in part number)
Si554: Option1+Option2+Freq(7)+Temp
Si554 w/ 8-digit resolution: Option1+Option2+ConfigNum(6)+Temp
Pin 1 orientation mark (dot)
Product Revision (D)
Tiny Trace Code (4 alphanumeric characters per assembly release instructions)
Year (least significant year digit), to be assigned by assembly site (ex: 2007 = 7)
Calendar Work Week number (1–53), to be assigned by assembly site
“+” to indicate Pb-Free and RoHS-compliant
Rev. 1.1
13