si5351 Silicon Laboratories, si5351 Datasheet - Page 7

• Manufacturer Part Number: si5351
• Description: Si5350a Factory-programmable Cmos Clock Generator
• Manufacturer: Silicon Laboratories

Table 8. Crystal Requirements
Table 9. I
Parameter
Crystal Frequency
Load Capacitance
Equivalent Series Resistance
Crystal Max Drive Level
Notes:
Parameter
LOW Level
Input Voltage
HIGH Level
Input Voltage
Hysteresis of
Schmitt Trigger
Inputs
LOW Level Out-
put Voltage
(open drain or
open collector)
at 3 mA Sink
Current
Input Current
Capacitance for
Each I/O Pin
I
out
Notes:
2
C Bus Time-
1. Crystals which require load capacitances of 6, 8, or 10 pF should use the device’s internal load capacitance for
2. Refer to “AN551: Crystal Selection Guide” for more details.
1. Refer to NXP’s UM10204 I
2. Only I
optimum performance. See register 183 bits 7:6. A crystal with a 12 pF load capacitance requirement should use a
combination of the internal 10 pF load capacitors in addition to external 2 pF load capacitors.
www.nxp.com/acrobat_download/usermanuals/UM10204_3.pdf.
2
C Specifications (SCL,SDA)
2
C pullup voltages (VDDI2C) of 2.25 to 3.63 V are supported.
V
Symbol
V
V
V
C
OLI2C
I
T
IHI2C
ILI2C
II2C
HYS
II2C
TO
2
V
V
IN
Timeout Enabled
DDI2C
V
2
Test Condition
DDI2C
C-bus specification and user manual, revision 03, for further details:
= –0.1 to V
1,2
2
= 2.5/3.3 V
2
= 1.8 V
DDI2C
1
0.7 x V
Rev. 0.1
–0.5
–10
Min
Symbol
—
—
—
25
Standard Mode
C
0
f
r
XTAL
ESR
C
DDI2
d
100 kbps
L
L
0.3 x V
3.63
Max
0.4
10
35
—
—
C
4
Min
DDI2
25
—
—
6
0.7 x V
–0.5
–10
Min
0.1
25
—
Typ
0
0
—
—
—
—
DDI2C
Si5351A/B/C
Fast Mode
400 kbps
2
0.3 x V
0.2 x V
Max
150
100
27
12
3.63
Max
0.4
10
35
—
4
DDI2C
DDI2C
2
MHz
Unit
µW
pF

Unit
ms
µA
pF
V
V
V
V
V
7