Datasheet

±15kV ESD Protected MII/RMII 10/100 Ethernet Transceiver with HP Auto-MDIX Support and flexPWR
®
Technology in a Small Footprint
Datasheet
Revision 2.3 (04-12-11) 74 SMSC LAN8700/LAN8700i
DATASHEET
Note: For VDDIO operation below +2.5V, SMSC recommends designs add external strapping
resistors in addition the internal strapping resistors to ensure proper strapped operation.
Note 7.4 Measured at the line side of the transformer, line replaced by 100Ω (± 1%) resistor.
Note 7.5 Offset from 16 nS pulse width at 50% of pulse peak
Note 7.6 Measured differentially.
Note 7.7 Min/max voltages guaranteed as measured with 100Ω resistive load.
Table 7.12 100Base-TX Transceiver Characteristics
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
Peak Differential Output Voltage High V
PPH
950 - 1050 mVpk Note 7.4
Peak Differential Output Voltage Low V
PPL
-950 - -1050 mVpk Note 7.4
Signal Amplitude Symmetry V
SS
98 - 102 % Note 7.4
Signal Rise & Fall Time T
RF
3.0 - 5.0 nS Note 7.4
Rise & Fall Time Symmetry T
RFS
--0.5nSNote 7.4
Duty Cycle Distortion D
CD
35 50 65 % Note 7.5
Overshoot & Undershoot V
OS
--5%
Jitter 1.4 nS Note 7.6
Table 7.13 10BASE-T Transceiver Characteristics
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
Transmitter Peak Differential Output Voltage V
OUT
2.2 2.5 2.8 V Note 7.7
Receiver Differential Squelch Threshold V
DS
300 420 585 mV