MAX4890/MAX4891/MAX4892
10/100/1000 Base-T Ethernet LAN Switch
4 _______________________________________________________________________________________
Typical Operating Characteristics
(V+ = 3.3V, T
A
= +25°C, unless otherwise noted.)
3.0
3.2
3.6
3.4
3.8
4.0
ON-RESISTANCE vs. V
A_
MAX4890 toc01
V
A_
(V)
R
ON
(Ω)
01.80.9 2.7 3.6
V+ = 3.0V, 3.3V, 3.6V
0
1
3
2
4
5
ON-RESISTANCE vs. V
A_
MAX4890 toc02
V
A_
(V)
R
ON
(Ω)
0 1.1 2.2 3.3
T
A
= +85°C
T
A
= -40°C
T
A
= +25°C
0
6
4
2
8
10
12
14
16
18
20
0 0.9 1.8 2.7 3.6
LED_ ON-RESISTANCE vs. V
A_
MAX4890 toc03
V
A_
(V)
R
ONLED
(Ω)
V+ = 3.6V
V+ = 3.3V
V+ = 3.0V
0
6
4
2
8
10
12
14
16
18
20
01.1
2.2
3.3
LED_ ON-RESISTANCE vs. TEMPERATURE
MAX4890 toc04
V
A_
(V)
R
ONLED
(Ω)
T
A
= +25°C
T
A
= -40°C
T
A
= +85°C
0
400
200
1000
800
600
1600
1400
1200
1800
-40 10-15 356085
LEAKAGE CURRENT vs. TEMPERATURE
MAX4890 toc05
TEMPERATURE (
°
C)
LEAKAGE CURRENT (pA)
I
LA_(ON)
I
LA_(OFF)
0
100
5
20
15
25
30
0 1.1 2.2 3.3
CHARGE INJECTION vs. V
A_
MAX4890 toc06
V
A_
(V)
CHARGE INJECTION (pC)
150
210
190
170
230
250
270
290
310
330
350
-40 10-15 35 60 85
QUIESCENT SUPPLY CURRENT
vs. TEMPERATURE
MAX4890 toc07
TEMPERATURE (°C)
QUIESCENT SUPPLY CURRENT (µA)
0
400
200
800
600
1000
1200
0 1.1 2.2 3.3
QUIESCENT SUPPLY CURRENT
vs. LOGIC LEVEL
MAX4890 toc08
LOGIC LEVEL (V)
QUIESCENT SUPPLY CURRENT (µA)
0
0.4
0.2
1.0
0.8
0.6
1.6
1.4
1.2
1.8
3.0 3.23.1 3.3 3.4 3.5 3.6
LOGIC THRESHOLD vs. SUPPLY VOLTAGE
MAX4890 toc09
SUPPLY VOLTAGE (V)
LOGIC THRESHOLD (V)
V
TH+
V
TH-
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