User guide

MAX4889B/MAX4889C
2.5/5.0Gbps PCIe Passive Switches
6 _______________________________________________________________________________________
Typical Operating Characteristics
(V
CC
= +3.3V, T
A
= +25°C, unless otherwise noted.)
4.0
5.5
5.0
4.5
6.5
6.0
7.5
7.0
8.0
0 0.6 1.2 1.8
ON-RESISTANCE vs. V
_IN_
MAX4889B/9C toc01
V
_IN_
(V)
R
ON
(Ω)
V
CC
= +3.0V
V
CC
= +3.6V
V
CC
= +3.3V
3
2
4
5
6
7
8
9
10
0 0.3 0.6 0.9 1.2 1.5
ON-RESISTANCE vs. V
_IN_
MAX4889B/9C toc02
V
_IN_
(V)
R
ON
(Ω)
T
A
= +85°C
T
A
= -40°C T
A
= +25°C
250
350
300
500
450
400
650
600
550
700
-40 10-15 356085
SUPPLY CURRENT
vs. TEMPERATURE
MAX4889B/9C toc03
TEMPERATURE (°C)
SUPPLY CURRENT (μA)
MAX4889B
MAX4889C
V
CC
= +3.6V
V
CC
= +3.3V
V
CC
= +3.0V
V
CC
= +3.6V
V
CC
= +3.3V
V
CC
= +3.0V
0.9
1.0
1.2
1.1
1.3
1.4
3.0 3.23.1 3.3 3.4 3.5 3.6
LOGIC THRESHOLD
vs. SUPPLY VOLTAGE
MAX4889B/9C toc04
V
CC
(V)
LOGIC THRESHOLD (V)
V
IH
V
IL
0
10
20
60
50
40
30
80
70
90
TURN-ON/-OFF TIME
vs. SUPPLY VOLTAGE
MAX4889B/9C toc05
V
CC
(V)
TURN-ON/-OFF TIME (ns)
3.0 3.4 3.53.2 3.33.1 3.6
t
ON SEL
t
OFF SEL
-20
-16
-18
-12
-14
-8
-10
-6
-2
-4
0
0246810
DIFFERENTIAL INSERTION LOSS
vs. FREQUENCY
MAX4889B/9C toc06
FREQUENCY (GHz)
DIFFERENTIAL INSERITON LOSS (dB)
MAX4889B
MAX4889C
MASK
-50
-40
-45
-30
-35
-20
-25
-15
-5
-10
0
0246810
DIFFERENTIAL OFF-ISOLATION
vs. FREQUENCY
MAX4889B/9C toc07
FREQUENCY (GHz)
DIFFERENTIAL OFF-ISOLATION (dB)
-80
-60
-70
-50
-20
-10
-30
-40
0
0246810
DIFFERENTIAL CROSSTALK
vs. FREQUENCY
MAX4889B/9C toc08
FREQUENCY (GHz)
DIFFERENTIAL CROSSTALK (dB)
-40
-30
-35
-25
-10
-5
-15
-20
0
0246810
DIFFERENTIAL RETURN LOSS
vs. FREQUENCY
MAX4889B/9C toc09
FREQUENCY (GHz)
DIFFERENTIAL RETURN LOSS (dB)
MAX4889B
MAX4889C
MASK