Silicon Laboratories SI5351A/B/C I2C Specifications SCL,SDA1, Thermal Characteristics

Si5351A/B/C

Table 7. I2C Specifications (SCL,SDA)1

Parameter	Symbol	Test Condition			Standard Mode		Fast Mode				Unit
					100 kbps		400 kbps
					Min	Max	Min		Max
LOW Level	VILI2C				–0.5	0.3 x VDDI2	–0.5		0.3 x VDDI2C	2	V
Input Voltage						C
HIGH Level	VIHI2C				0.7 x VDDI2	3.63	0.7 x VDDI2C	2	3.63		V
Input Voltage					C
Hysteresis of					—	—	0.1		—		V
Schmitt Trigger	VHYS
Inputs
LOW Level		VDDI2C2 = 2.5/3.3 V			0	0.4	0		0.4		V
Output Voltage
(open drain or	VOLI2C2
open collector)		VDDI2C	2	= 1.8 V	—	—	0		0.2 x VDDI2C		V
at 3 mA Sink
Current
Input Current	III2C				–10	10	–10		10		µA
Capacitance for	CII2C	VIN = –0.1 to VDDI2C			—	4	—		4		pF
Each I/O Pin
I2C Bus	TTO	Timeout Enabled			25	35	25		35		ms
Timeout
Notes:

1. Refer to NXP’s UM10204 I2C-bus specification and user manual, revision 03, for further details, go to: www.nxp.com/acrobat_download/usermanuals/UM10204_3.pdf.

2. Only I2C pullup voltages (VDDI2C) of 2.25 to 3.63 V are supported.

Table 8. Thermal Characteristics

Parameter	Symbol	Test Condition	Package	Value	Unit
			10-MSOP	131	°C/W
Thermal Resistance	θJA
		Still Air	24-QSOP	80	°C/W
Junction to Ambient
			20-QFN	51	°C/W
			10-MSOP	43	°C/W
Thermal Resistance	θJC
		Still Air	24-QSOP	31	°C/W
Junction to Case
			20-QFN	16	°C/W

Preliminary Rev. 0.95 7