Pin description – Rainbow Electronics MAX4889C User Manual
Page 8
MAX4889B/MAX4889C
2.5/5.0Gbps PCIe Passive Switches
8
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Pin Description
PIN
MAX4889B/
MAX4889C
NAME
FUNCTION
1
AIN+
Analog Switch 1. Common Positive Terminal.
2
AIN-
Analog Switch 1. Common Negative Terminal.
3
AOUTB+
Analog Switch 1. Normally Open Positive Terminal.
4
AOUTB-
Analog Switch 1. Normally Open Negative Terminal.
5
BIN+
Analog Switch 2. Common Positive Terminal.
6
BIN-
Analog Switch 2. Common Negative Terminal.
7
BOUTB+
Analog Switch 2. Normally Open Positive Terminal.
8
BOUTB-
Analog Switch 2. Normally Open Negative Terminal.
9, 19, 21, 26, 31,
34, 39, 41
V
CC
P osi ti ve S up p l y V ol tag e Inp ut. C onnect V
C C
to a 3.0V to 3.6V sup p l y vol tag e. Byp ass V
C C
to GN D w i th
a 0.1µF cer am i c cap aci tor p l aced as cl ose as p ossi b l e to the d evi ce. S ee the Boar d Layout secti on.
10
CIN+
Analog Switch 3. Common Positive Terminal.
11
CIN-
Analog Switch 3. Common Negative Terminal.
12
COUTB+
Analog Switch 3. Normally Open Positive Terminal.
13
COUTB-
Analog Switch 3. Normally Open Negative Terminal.
14
DIN+
Analog Switch 4. Common Positive Terminal.
15
DIN-
Analog Switch 4. Common Negative Terminal.
16
DOUTB+
Analog Switch 4. Normally Open Positive Terminal.
17
DOUTB-
Analog Switch 4. Normally Open Negative Terminal.
18, 20, 22, 25, 29,
35, 38, 40, 42
GND
Ground
23
DOUTA-
Analog Switch 4. Normally Closed Negative Terminal.
24
DOUTA+
Analog Switch 4. Normally Closed Positive Terminal.
27
COUTA-
Analog Switch 3. Normally Closed Negative Terminal.
28
COUTA+
Analog Switch 3. Normally Closed Positive Terminal.
30
SEL
Control Signal Input. SEL has a 70k
Ω (typ) pulldown resistor to GND.
32
BOUTA -
Analog Switch 2. Normally Closed Negative Terminal.
33
BOUTA+
Analog Switch 2. Normally Closed Positive Terminal.
36
AOUTA-
Analog Switch 1. Normally Closed Negative Terminal.
37
AOUTA+
Analog Switch 1. Normally Closed Positive Terminal.
—
EP
Exposed Pad. Connect EP to GND.