Datasheet

16-bit Non-PCI Small Form Factor 10/100 Ethernet Controller with Variable Voltage I/O & HP Auto-MDIX Support
Datasheet
SMSC LAN9220 145 Revision 2.9 (03-01-12)
DATASHEET
Note 7.6 This specification applies to all inputs and tri-stated bi-directional pins. Internal pull-down
and pull-up resistors add +/- 50uA per-pin (typical). 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.
Note 7.7 This is the total V
IN
input leakage for the entire device. This value should be divided by
the number of pins driven to V
IN
MAX to calculate per-pin leakage. For example, if 10 pins
are driven to the maximum operational limit for V
IN
(5.5V or 5.25V, dependant on
VDDVARIO), the per-pin input leakage is the maximum input leakage current divided by
10.
Table 7.8 I/O Buffer Characteristics VDDVARIO=1.8V +/- 10%
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
VIS Type Input Buffer
Low Input Level V
ILI
-0.3 V
High Input Level V
IHI
5.25 V
Negative-Going Threshold V
ILT
0.54 0.69 0.83 V Schmitt Trigger
Positive-Going Threshold V
IHT
0.878 1.06 1.24 V Schmitt Trigger
Schmitt Trigger Hysteresis
(V
IHT -
V
ILT
)
V
HYS
277 368 525 mV
Input Leakage
(V
IN
= VSS or VDDVARIO)
I
IH
-10 +10 uA Note 7.6
Input Leakage
(V
IN
= 5.25V)
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
= 4mA
High Output Level V
OH
VDDVARIO - 0.4
VI
OH
= -4mA
VOD12 Type Buffer
Low Output Level V
OL
0.4 V I
OL
= 4mA
VOD8 Type Buffer
Low Output Level V
OL
0.4 V I
OL
= 3mA
VO8 Type Buffer
Low Output Level V
OL
0.4 V I
OL
= 3mA
High Output Level V
OH
VDDVARIO - 0.4
VI
OH
= -3mA
ICLK Input Buffer
Low Input Level V
ILCK
-0.3 0.5 V
High Input Level V
IHCK
1.4 3.6 V