Datasheet

Micrel, Inc.
KSZ8081MNX/KSZ8081RNB
August
19, 2015 52
Revision 1.4
Absolute Maximum Ratings
(11)
Supply Voltage (V
IN
)
(V
DD_1.2
) .................................................. –0.5V to +1.8V
(V
DDIO
, V
DDA_3.3
) ...................................... –0.5V to +5.0V
Input Voltage (all inputs) .............................. –0.5V to +5.0V
Output Voltage (all outputs) ......................... –0.5V to +5.0V
Lead Temperature (soldering, 10s) ............................ 260°C
Storage Temperature (T
S
) ......................... –55°C to +150°C
Operating Ratings
(12)
Supply Voltage
(V
DDIO_3.3
, V
DDA_3.3
) .......................... +3.135V to +3.465V
(V
DDIO_2.5
) ........................................ +2.375V to +2.625V
(V
DDIO_1.8
) ........................................ +1.710V to +1.890V
Ambient Temperature
(T
A
, Commercial) ...................................... 0°C to +70°C
(T
A
, Industrial) ....................................... –40°C to +85°C
Maximum Junction Temperature (T
J(MAX)
) .................. 125°C
Thermal Resistance (θ
JA
) ................................... 34°C/W
Thermal Resistance (θ
JC
) .................................... 6°C/W
Electrical Characteristics
(13)
Symbol Parameter Condition Min. Typ. Max. Units
Supply Current (V
DDIO
, V
DDA_3.3
= 3.3V)
(14)
I
DD1_3.3V
10Base-T Full-duplex traffic @ 100% utilization 41 mA
I
DD2_3.3V
100Base-TX Full-duplex traffic @ 100% utilization 47 mA
I
DD3_3.3V
EDPD Mode Ethernet cable disconnected (reg. 18h.11 = 0) 20 mA
I
DD4_3.3V
Power-Down Mode Software power-down (reg. 0h.11 = 1) 4 mA
CMOS Level Inputs
V
IH
Input High Voltage
V
DDIO
= 3.3V 2.0
V V
DDIO
= 2.5V 1.8
V
DDIO
= 1.8V 1.3
V
IL
Input Low Voltage
V
DDIO
= 3.3V 0.8
V V
DDIO
= 2.5V 0.7
V
DDIO
= 1.8V 0.5
|I
IN
| Input Current V
IN
= GND ~ VDDIO 10 µA
CMOS Level Outputs
V
OH
Output High Voltage
V
DDIO
= 3.3V 2.4
V V
DDIO
= 2.5V 2.0
V
DDIO
= 1.8V 1.5
V
OL
Output Low Voltage
V
DDIO
= 3.3V 0.4
V V
DDIO
= 2.5V 0.4
V
DDIO
= 1.8V 0.3
|I
oz
| Output Tri-State Leakage 10 µA
LED Output
I
LED
Output Drive Current Each LED pin (LED0, LED1) 8 mA
Notes:
11. Exceeding the absolute maximum ratings can damage the device. Stresses greater than the absolute maximum rating can cause permanent
damage to the device. Operation of the device at these or any other conditions above those specified in the operating sections of this specification is
not implied. Maximum conditions for extended periods may affect reliability.
12. The device is not guaranteed to function outside its operating ratings.
13. T
A
= 25°C. Specification for packaged product only.
14. Current consumption is for the single 3.3V supply KSZ8081MNX/RNB device only, and includes the transmit driver current and the 1.2V supply
voltage (VDD_1.2) that are supplied by the KSZ8081MNX/RNB.