LAN8820 Datasheet, PDF (63/83 Pages) Microchip Technology – RGMII 10/100/1000 Ethernet Transceiver

LAN8820/LAN8820I
5.4 DC Specifications
TABLE 5-7: I/O BUFFER CHARACTERISTICS
Parameter
IS Type Input Buffer
Symbol
Min
Typical
Low Input Level
High Input Level
Negative-Going Threshold
Positive-Going Threshold
SchmittTrigger Hysteresis
(V_IHT - V_ILT)
Input Leakage
(V_IN = VSS or VDD25IO)
Input Capacitance
O6 Type Buffers
Low Output Level
High Output Level
O8 Type Buffers
V_ILI
V_IHI
V_ILT
V_IHT
V_HYS
I_IH
C_IN
-0.3
0.64
0.81
102
-10
V_OL
V_OH
VDD25IO -
0.4
1.15
1.29
136
Low Output Level
High Output Level
ICLK Type Buffer
(XI Input)
V_OL
V_OH
VDD25IO -
0.4
Low Input Level
High Input Level
V_ILI
-0.3
V_IHI
1.4
Max
Units
V
3.6
V
1.76
V
1.90
V
288
mV
10
uA
3
pF
0.4
V
V
0.4
V
V
0.5
V
3.6
V
Notes
Schmitt trigger
Schmitt trigger
Note 5-5
I_OL = 6mA
I_OH = -6mA
I_OL = 8mA
I_OH = -8mA
Note 5-6
Note 5-5
Note 5-6
This specification applies to all inputs and tri-stated bi-directional pins. Internal pull-down and pull-up
resistors add +/- 50uA per-pin (typical).
XI can optionally be driven from a 25MHz single-ended clock oscillator.
TABLE 5-8: 1000BASE-T TRANSCEIVER CHARACTERISTICS
Parameter
Peak Differential Output Voltage
Signal Amplitude Symmetry
Signal Scaling
Output Droop
Transmission Distortion
Symbol Min
Typ
V_OP
V_SS
V_SC
V_OD
670
73.1
Note 5-7
Note 5-8
IEEE 802.ab Test Mode 1
From 1/2 of average V_OP, Test Mode 1
Max Units
Notes
820
mV
Note 5-7
1
%
Note 5-7
2
%
Note 5-8
%
Note 5-7
10
mV
Note 5-9
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DS00001871B-page 63