SI5345_16 Datasheet, PDF (31/60 Pages) Silicon Laboratories – 10-Channel, Any-Frequency, Any-Output Jitter Attenuator/ Clock Multiplier

Si5345/44/42 Rev D Data Sheet
Electrical Specifications
Parameter
Symbol
Test Condition
Min
Typ
Max
Unit
Note:
1. Driver strength is a register programmable setting and stored in NVM. Options are OUTx_CMOS_DRV = 1, 2, 3. Refer to the
Family Reference Manual for more details on register settings.
2. I_OL/I_OH is measured at V_OL/V_OH as shown in the dc test configuration.
3. A series termination resistor (Rs) is recommended to help match the source impedance to a 50 Ω PCB trace. A 5 pF capacitive
load is assumed. The LVCMOS outputs were set to OUTx_CMOS_DRV = 3, at 156.25 MHz.
AC Test Configuration
IOL/IOH
IDDO
Trace length 5 inches
50
499
DC Block
50 probe, scope
Zs
VOL/VOH
OUT
OUTb
50
4.7 pF
499
56
DC Block
50 probe, scope
4.7 pF
56
Table 5.7. Output Status Pin Specifications
V_DD = 1.8 V ±5%, V_DDA = 3.3 V ±5%, V_DDS = 3.3 V ±5%, 1.8 V ±5%, T_A = –40 to 85 °C
Parameter
Symbol
Test Condition
Min
Typ
Max
Unit
Si5345 Status Output Pins (LOLb, INTRb, SDA/SDIO¹, SDO)
Output Voltage
V_OH
V_OL
I_OH = –2 mA
I_OL = 2 mA
V_DDIO2 x
0.85
—
—
V
—
—
V_DDIO2 x
0.15
V
Si5344/42 Status Output Pins (INTRb, SDA/SDIO1¹, SDO)
Output Voltage
V_OH
V_OL
I_OH = –2 mA
I_OL = 2 mA
V_DDIO2 x
0.85
—
—
V
—
—
V_DDIO2 x
0.15
V
Si5344 Status Output Pins (LOLb, LOS_XAXBb)
Si5342 Status Output Pins (LOLb, LOS_XAXBb, LOS0b, LOS1b, LOS2b, LOS3b)
Output Voltage
V_OH
V_OL
I_OH = –2 mA
I_OL = 2 mA
V_DDS x 0.85
—
—
V
—
—
V_DDS x 0.15
V
Notes:
1. The V_OH specification does not apply to the open-drain SDA/SDIO output when the serial interface is in I²C mode or is unused
with I2C_SEL pulled high. VOL remains valid in all cases.
2. V_DDIO is determined by the IO_VDD_SEL bit. It is selectable as V_DDA or V_DD. See the Family Reference Manual for more details
on the proper register settings.
silabs.com | Smart. Connected. Energy-friendly.
Rev. 1.0 | 30