Specifications

ASIX ELECTRONICS CORPORATION
34
AX88772
USB to 10/100 Fast Ethernet/HomePNA Controller
8.1.3 Leakage Current and Capacitance
Symbol Parameter Condition Min Typ Max Unit
I
IN
Input current No pull-up or pull-down -10
±1
10
μA
I
OZ
Tri-state leakage current -10
±1
10
μA
C
IN
Input capacitance - 3.1 - pF
C
OUT
Output capacitance - 3.1 - pF
C
BID
Bi-directional buffer capacitance - 3.1 - pF
Note: The capacitance listed above does not include pad capacitance and package capacitance. One can estimate pin
capacitance by adding a pad capacitance of about 0.5pF and the package capacitance.
8.1.4 DC Characteristics of 2.5V I/O Pins
Symbol Parameter Condition Min Typ Max Unit
VDD2 Power supply of 2.5V I/O 2.25 2.5 2.75 V
Temp Junction temperature 0 25 115
℃
Vil Input low voltage - - 0.7 V
Vih Input high voltage
CMOS
1.7 - - V
Vt- Schmitt trigger negative going
threshold voltage
0.7 1.0 - V
Vt+ Schmitt trigger positive going
threshold voltage
CMOS
- 1.5 1.7 V
Vol Output low voltage |Iol| = 2~16mA - - 0.4 V
Voh Output high voltage |Ioh| = 2~16mA 1.85 - - V
Rpu Input pull-up resistance 40 75 190
KΩ
Rpd Input pull-down resistance 40 75 190
KΩ
Iin Input leakage current Vin = VDD2 or 0 -10
±1
10
μA
Ioz Tri-state output leakage current -10
±1
10
μA
8.1.5 DC Characteristics of 3.3V I/O Pins
Symbol Parameter Condition Min Typ Max Unit
VDD3 Power supply of 3.3V I/O 3.3V I/O 3.0 3.3 3.6 V
Temp Junction temperature 0 25 115
℃
Vil Input low voltage - - 0.8 V
Vih Input high voltage
LVTTL
2.0 - - V
Vt- Schmitt trigger negative going
threshold voltage
0.8 1.1 - V
Vt+ Schmitt trigger positive going
threshold voltage
LVTTL
- 1.6 2.0 V
Vol Output low voltage |Iol| = 2~16mA - - 0.4 V
Voh Output high voltage |Ioh| = 2~16mA 2.4 - - V
Rpu Input pull-up resistance 40 75 190
KΩ
Rpd Input pull-down resistance 40 75 190
KΩ
Iin Input leakage current Vin = VDD3 or 0 -10
±1
10
μA
Ioz Tri-state output leakage current -10
±1
10
μA