Datasheet

Micrel, Inc. KS8721BL/SL
June 2009
24
M9999-062509-1.3
Absolute Maximum Ratings
(1)
Storage Temperature (T
s
) .........................–55°C to +150°C
Supply Referenced to GND.......................... –0.5V to +4.0V
All Pins ......................................................... –0.5V to +4.0V
Operating Ratings
(2)
Supply Voltage
(V
DD_PLL
, V
DD_TX
, V
DD_RXC
, V
DD_RCV
, V
DDC
) ......... +2.5V
(V
DDIO
).............................................................. +3.3V
Ambient Temperature (T
A
)
Commercial ......................................... 0°C to +70°C
Industrial.......................................... –40°C to +85°C
Package Thermal Resistance
(3)
LQFP(θ
JA
)
No Airflow ........................................... 83.56°C/W
SSOP(θ
JA
)
No Airflow ........................................... 75.19°C/W
Electrical Characteristics
(4)
V
DD
= 3.3V ±10%
Symbol Parameter Condition Min Typ Max Units
Total Supply Current (including TX output driver current)
(5)
I
DD1
Normal 100BASE-TX Including 43mA output current 116 mA
I
DD2
Normal 100BASE-TX
(Independent of utilization)
Including 103mA output current 151 mA
I
DD3
Power Saving Mode 1 Auto-negotiation is Enable 47 mA
I
DD5
Power Down Mode 4 mA
TTL Inputs
V
IH
Input High Voltage
1/2V
DD
(I/O)
+0.2
V
V
IL
Input Low Voltage 0.8 V
I
IN
Input Current
V
IN
= GND ~ V
DDIO
–10 10 µA
TTL Outputs
V
OH
Output High Voltage I
OH
= –4mA
1/2V
DD
(I/O)
+0.6
V
V
OL
Output Low Voltage I
OL
= 4mA 0.4 V
I
OZ
Output Tri-state Leakage 10 µA
100Base-TX Receive
RX+/RX– Differential Input
Resistance
8 k
R
IN
Propagation Delay from magnetics to RDTX 50 110 ns
10Base-TX Transmit (measured differentially after 1:1 transformer)
V
O
Peak Differential Output Voltage
50
Ω from each output to V
DD
0.95 1.05 V
V
IMB
Output Voltage Imbalance
50
Ω from each output to V
DD
2 %
Rise/Fall Time 3 5 ns
Rise/Fall Time Imbalance 0 0.5 ns
Duty Cycle Distortion ±0.5 ns
t
r
, t
f
Overshoot 5 %
Reference Voltage of ISET 0.75 V
Propagation Delay from TDTX to magentics 45 60 ns
V
SET
Jitters 0.7 1.4 ns
(pp)