LAN9221_12 Datasheet, PDF (143/151 Pages) SMSC Corporation – High-Performance 16-bit Non-PCI 10/100 Ethernet Controller with Variable Voltage I/O

High-Performance 16-bit Non-PCI 10/100 Ethernet Controller with Variable Voltage I/O
Datasheet
7.6
DC Electrical Specifications
This section details the DC electrical specifications of the LAN9221/LAN9221i 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
VIS Type Input Buffer
Low Input Level
High Input Level
Negative-Going Threshold
Positive-Going Threshold
Schmitt Trigger Hysteresis
(V_{IHT -} V_ILT)
Input Leakage
(V_IN = VSS or VDDVARIO)
Input Leakage
(V_IN = 5.5V)
Input Capacitance
VO12 Type Buffer
Low Output Level
High Output Level
VOD12 Type Buffer
Low Output Level
VOD8 Type Buffer
Low Output Level
VO8 Type Buffer
Low Output Level
High Output Level
ICLK Input Buffer
Low Input Level
High Input Level
V_ILI
V_IHI
V_ILT
V_IHT
V_HYS
I_IH
I_IH
C_IN
V_OL
V_OH
V_OL
V_OL
V_OL
V_OH
V_ILCK
V_IHCK
-0.3
1.01
1.40
350
-10
VDDVARIO - 0.4
VDDVARIO - 0.4
-0.3
1.4
TYP
1.18
1.61
423
MAX
5.5
1.35
1.81
492
+10
120
2.5
0.4
0.4
0.4
0.4
0.5
3.6
UNITS
NOTES
V
V
V
Schmitt Trigger
V
Schmitt Trigger
mV
uA
Note 7.8
uA
Note 7.8, Note 7.9
pF
V
I_OL = 12mA
V
I_OH = -12mA
V
I_OL = 12mA
V
I_OL = 8mA
V
I_OL = 8mA
V
I_OH = -8mA
V
V
SMSC LAN9221/LAN9221i
143
DATASHEET
Revision 2.9 (03-01-12)