Datasheet

16-bit Non-PCI Small Form Factor 10/100 Ethernet Controller with Variable Voltage I/O & HP Auto-MDIX Support
Datasheet
SMSC LAN9220 143 Revision 2.9 (03-01-12)
DATASHEET
7.6 DC Electrical Specifications
This section details the DC electrical specifications of the LAN9220 I/O buffers. The electrical
specifications in this section are valid over the indicated voltage range and the temperature range
specified in Section 7.2, "Operating Conditions**".
Note: When operating at reduced VDDVARIO voltage levels (less than 3.0V), do not rely on internal
pull-up and pull-down resistors to determine signal state. Refer to the individual signal
descriptions in Chapter 2, Pin Description and Configuration for more information.
Table 7.6 I/O Buffer Characteristics VDDVARIO=3.3V +/- 300mV
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
VIS Type Input Buffer
Low Input Level V
ILI
-0.3 V
High Input Level V
IHI
5.5 V
Negative-Going Threshold V
ILT
1.01 1.18 1.35 V Schmitt Trigger
Positive-Going Threshold V
IHT
1.40 1.61 1.81 V Schmitt Trigger
Schmitt Trigger Hysteresis
(V
IHT -
V
ILT
)
V
HYS
350 423 492 mV
Input Leakage
(V
IN
= VSS or VDDVARIO)
I
IH
-10 +10 uA Note 7.6
Input Leakage
(V
IN
= 5.5V)
I
IH
120 uA Note 7.6, Note 7.7
Input Capacitance C
IN
2.5 pF
VO12 Type Buffer
Low Output Level V
OL
0.4 V I
OL
= 12mA
High Output Level V
OH
VDDVARIO - 0.4
VI
OH
= -12mA
VOD12 Type Buffer
Low Output Level V
OL
0.4 V I
OL
= 12mA
VOD8 Type Buffer
Low Output Level V
OL
0.4 V I
OL
= 8mA
VO8 Type Buffer
Low Output Level V
OL
0.4 V I
OL
= 8mA
High Output Level V
OH
VDDVARIO - 0.4
VI
OH
= -8mA
ICLK Input Buffer
Low Input Level V
ILCK
-0.3 0.5 V
High Input Level V
IHCK
1.4 3.6 V