High-Performance Single-Chip 10/100 Ethernet Controller with HP Auto-MDIX and Industrial Temperature Support
Datasheet
7.5
DC Electrical Specifications
Table 7.3 below lists the worst case current consumption for each of the supplies of the LAN9218i.
These figures are provided to assist system designers properly design the power supply; they cannot
be used to determine typical power consumption of the device. All of these values are preliminary.
Note: The current measurements listed below were taken under the following conditions:
Temperature: .....................................................................................................................-40°C to +85°C
Device VDD:....................................................................................................................+3.30 V +/- 10%
Table 7.3 Supply Current Characteristics
SUPPLY
NAME
PARAMETER
MIN
TYP
MAX
UNITS
NOTES
Internal Regulator Supply
Current
VREG
69
mA
+3.3V I/O Supply Current
VDD_IO
VDD_A
13
40
mA
mA
+3.3V Analog Supply
Current
Reference Supply Current
VDD_REF
31
mA
Note 7.7 Above figures do not include the supply current for the magnetics. Based on the
recommended implementation, the maximum supply current needed for the magnetics is
108mA.
Table 7.4 I/O Buffer Characteristics
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
I Type Input Buffer
Low Input Level
VILI
VIHI
-0.3
2.0
0.8
5.5
V
V
High Input Level
IS Type Input Buffer
Negative-Going Threshold
Positive-Going Threshold
Schmitt Trigger Hysteresis
VILT
VIHT
VHYS
1.01
1.39
345
1.18
1.6
1.35
1.8
V
V
Schmitt Trigger
Schmitt Trigger
420
485
mV
(VIHT - VILT
)
O12 Type Buffer
Low Output Level
High Output Level
OD12 Type Buffer
Low Output Level
VOL
VOH
0.4
0.4
V
V
IOL = 12mA
IOH = -12mA
VDD - 0.4
VOL
V
IOL = 12mA
SMSC LAN9218i
129
Revision 1.8 (06-06-07)
DATASHEET
SMSC [ SMSC CORPORATION ]
