SMSC LAN9420, LAN9420i MIN, TYP, MAX, MIN, TYP, MAX, Note, Note, Note, Note, UNITS, NOTES, UNITS, NOTES, SYMBOL, SYMBOL, PARAMETER, PARAMETER

Single-Chip Ethernet Controller with HP Auto-MDIX Support and PCI Interface

Datasheet

Table 5.7 100BASE-TX Transceiver Characteristics

PARAMETER		SYMBOL	MIN	TYP	MAX	UNITS	NOTES
Peak Differential Output Voltage High		VPPH	950	-	1050	mVpk	Note 5.10
Peak Differential Output Voltage Low		VPPL	-950	-	-1050	mVpk	Note 5.10
Signal Amplitude Symmetry		VSS	98	-	102	%	Note 5.10
Signal Rise and Fall Time		TRF	3.0	-	5.0	nS	Note 5.10
Rise and Fall Symmetry		TRFS	-	-	0.5	nS	Note 5.10
Duty Cycle Distortion		DCD	35	50	65	%	Note 5.11
Overshoot and Undershoot		VOS	-	-	5	%
Jitter					1.4	nS	Note 5.12
Note 5.10	Measured at line side of transformer, line replaced by 100Ω (+/- 1%) resistor.
Note 5.11	Offset from 16nS pulse width at 50% of pulse peak.
Note 5.12	Measured differentially.

Table 5.8 10BASE-T Transceiver Characteristics

PARAMETER	SYMBOL	MIN	TYP	MAX	UNITS	NOTES
Transmitter Peak Differential Output Voltage	VOUT	2.2	2.5	2.8	V	Note 5.13
Receiver Differential Squelch Threshold	VDS	300	420	585	mV

Note 5.13 Min/max voltages guaranteed as measured with 100Ω resistive load.

Revision 1.22 (09-25-08)	160	SMSC LAN9420/LAN9420i
	DATASHEET