Si541 Data Sheet
Ordering Guide
1. Ordering Guide
The Si541 XO supports a variety of options including frequency, output format, and OE pin location/polarity, as shown in the chart
below. Specific device configurations are programmed into the part at time of shipment, and samples are available in 1-2 weeks. Silicon
Laboratories provides an online part number configuration utility to simplify this process. Refer to www.silabs.com/oscillators to access
this tool and for further ordering instructions.
Temp Stability Total Stability2
XO Series
Description
Package
5x7 mm
Temperature Grade
541
Dual Frequency
A
B
G
-40 to 85 °C
A
B
C
± 20 ppm
± 10 ppm
± 7 ppm
± 50 ppm
± 25 ppm
± 20 ppm
3.2x5 mm
541
A
A
A
-
-
-
-
-
-
A
B
G
R
Device Revision
OE
Pin
FS
Pin
Order
Option
OE Polarity
Signal Format
VDD Range
A
Pin 1 Active High Pin 2
Reel
LVPECL
LVDS
2.5, 3.3 V
A
B
C
D
E
B
Pin 1 Active Low Pin 2
R
Tape and Reel
Coil Tape
1.8, 2.5, 3.3 V
1.8, 2.5, 3.3 V
1.8, 2.5, 3.3 V
1.8, 2.5, 3.3 V
C Pin 2 Active High Pin 1
D Pin 2 Active Low Pin 1
<Blank>
CMOS
CML
Frequency Code3
Description
HCSL
Dual CMOS
(In-Phase)
Dual CMOS
1.8, 2.5, 3.3 V
F
Two unique frequencies can be specified
within the supported range of the selected
signal format. Either frequency can be
assigned to FS=0 or FS=1. A six digit numeric
code will be assigned for the specific
combination of frequencies.
1.8, 2.5, 3.3 V
1.8, 2.5, 3.3 V
G
H
(Complementary)
xxxxxx
1
Custom
Notes:
1. Contact Silicon Labs for non-standard configurations.
2. Total stability includes temp stability, initial accuracy, load pulling, VDD variation, and 20 year aging at 70 °C.
3. Create custom part numbers at www.silabs.com/oscillators.
1.1 Technical Support
Frequently Asked Questions (FAQ)
Oscillator Phase Noise Lookup Utility
Quality and Reliability
www.silabs.com/Si541-FAQ
www.silabs.com/oscillator-phase-noise-lookup
www.silabs.com/quality
Development Kits
www.silabs.com/oscillator-tools
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