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LAN8700 Datasheet(PDF) 62 Page - Microchip Technology

Part # LAN8700
Description  짹15kV ESD Protected MII/RMII 10/100 Ethernet Transceiver with HP Auto-MDIX Support and flexPWR짰 Technology in a Small Footprint
PDF  74 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

LAN8700 Datasheet(HTML) 62 Page - Microchip Technology

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LAN8700/LAN8700i
DS00002260A-page 62
 2007-2016 Microchip Technology Inc.
Note 7-4
Measured at the line side of the transformer, line replaced by 100
 (± 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 ensured as measured with 100
 resistive load.
RX_ER/RXD4
Pull-down
RX_DV
Pull-down
TX_EN
Pull-down
Note:
For VDDIO operation below +2.5V, Microchip recommends designs add external strapping resistors in
addition the internal strapping resistors to ensure proper strapped operation.
TABLE 7-12:
100BASE-TX TRANSCEIVER CHARACTERISTICS
Parameter
Symbol
MIN
TYP
MAX
Units
Notes
Peak Differential Output Voltage High
VPPH
950
-
1050
mVpk
Note 7-4
Peak Differential Output Voltage Low
VPPL
-950
-
-1050
mVpk
Note 7-4
Signal Amplitude Symmetry
VSS
98
-
102
%
Note 7-4
Signal Rise & Fall Time
TRF
3.0
-
5.0
nS
Note 7-4
Rise & Fall Time Symmetry
TRFS
--
0.5
nS
Note 7-4
Duty Cycle Distortion
DCD
35
50
65
%
Note 7-5
Overshoot & Undershoot
VOS
--
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
VOUT
2.2
2.5
2.8
V
Note 7-7
Receiver Differential Squelch Threshold
VDS
300
420
585
mV
TABLE 7-11:
INTERNAL PULL-UP / PULL-DOWN CONFIGURATIONS (CONTINUED)
Name
Pull-up or Pull-down



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