Micrel, Inc.
KS8721BL/SL
June 2009
24
M9999-062509-1.3
Absolute Maximum Ratings
(1)
Storage Temperature (Ts) .........................–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
(VDD_PLL, VDD_TX, VDD_RXC, VDD_RCV, VDDC) ......... +2.5V
(VDDIO).............................................................. +3.3V
Ambient Temperature (TA)
Commercial ......................................... 0°C to +70°C
Industrial.......................................... –40°C to +85°C
Package Thermal Resistance
(3)
LQFP(θJA)
No Airflow ........................................... 83.56°C/W
SSOP(θJA)
No Airflow ........................................... 75.19°C/W
Electrical Characteristics
(4)
VDD = 3.3V ±10%
Symbol
Parameter
Condition
Min
Typ
Max
Units
Total Supply Current (including TX output driver current)
(5)
IDD1
Normal 100BASE-TX
Including 43mA output current
116
mA
IDD2
Normal 100BASE-TX
(Independent of utilization)
Including 103mA output current
151
mA
IDD3
Power Saving Mode 1
Auto-negotiation is Enable
47
mA
IDD5
Power Down Mode
4
mA
TTL Inputs
VIH
Input High Voltage
1/2VDD(I/O)
+0.2
V
VIL
Input Low Voltage
0.8
V
IIN
Input Current
VIN = GND ~ VDDIO
–10
10
A
TTL Outputs
VOH
Output High Voltage
IOH = –4mA
1/2VDD(I/O)
+0.6
V
VOL
Output Low Voltage
IOL = 4mA
0.4
V
IOZ
Output Tri-state Leakage
10
A
100Base-TX Receive
RX+/RX– Differential Input
Resistance
8
k
RIN
Propagation Delay
from magnetics to RDTX
50
110
ns
10Base-TX Transmit (measured differentially after 1:1 transformer)
VO
Peak Differential Output Voltage
50
Ω from each output to VDD
0.95
1.05
V
VIMB
Output Voltage Imbalance
50
Ω from each output to VDD
2
%
Rise/Fall Time
3
5
ns
Rise/Fall Time Imbalance
0
0.5
ns
Duty Cycle Distortion
±0.5
ns
tr, tf
Overshoot
5
%
Reference Voltage of ISET
0.75
V
Propagation Delay
from TDTX to magentics
45
60
ns
VSET
Jitters
0.7
1.4
ns(pp)