LAN83C183 Datasheet, PDF (84/113 Pages) SMSC Corporation – FAST ETHERNET PHYSICAL LAYER DEVICE

Table 5.2 DC Characteristics (Cont.)
Limit
Sym Parameter
Min
Typ
Max Unit Conditions
I_DD
V_DD Supply
Current
IGND GND Supply
Current
120
mA Transmitting, 100 Mbits/s
140
mA Transmitting, 10 Mbits/s
190 mA Transmitting, 100 Mbits/s¹
220 mA Transmitting, 10 Mbits/s¹
IPDN Powerdown
Supply Current
200 µA Powerdown, either I_DD or IGND
1. IGND includes current flowing into GND from the external resistors and transformer on TPO/FXO as shown in
?Application Note?
5.2.1 Twisted-Pair DC Characteristics
Unless otherwise noted, all test conditions for TP transmit and receive operations are
as follows:
TA = 0 to + 70 °C
V_DD = 3.3 V ± 5%
Clock = 25 MHz ±0.01%
REXT = 10 KΩ ±1%, no load
TPO+/- loading is as shown in ?Application Note? or equivalent
62.5/10 MHz Square Wave on TP+/- inputs in 100/10 Mbits/s modes
Table 5.3 shows the twisted-pair characteristics for transmit operation.
Table 5.3 Twisted Pair Characteristics (Transmit )
Sym
TOV
Parameter
TP Differential Output
Voltage
TOVS
TORF
TORFS
TP Differential Output
Voltage Symmetry
TP Differential Output
Rise and Fall Time
TP Differential Output
Rise and Fall Time
Symmetry
Limit
Min
0.950
Typ
1.000
Max
1.050
1.165 1.225 1.285
2.2
2.5
2.8
2.694 3.062 3.429
98
102
3.0
5.0
± 0.5
Unit
Conditions
V pk 100 Mbits/s, UTP Mode, 100 Ohm
Load
V pk 100 Mbits/s, STP Mode, 150 Ohm
Load
V pk 10 Mbits/s, UTP Mode, 100 Ohm
Load
V pk 10 Mbits/s, STP Mode, 150 Ohm
Load
% 100 Mbits/s, ratio of positive and
negative amplitude peaks on TPO±
nS 100 Mbits/s
TRF[1:0] = 0b10
nS 100 Mbits/s, difference between rise
and fall times on TPO±
SMSC DS – LAN83C183
84
Rev. 12/14/2000