Datasheet

SAS/SATA Single Lane 2:1/1:2 Multiplexer/
Demultiplexer Plus Redriver with Equalization
MAX4986
7
Pin Configuration
Pin Description
TOP VIEW
TQFN
18
19
20
21
OAMP
OUTPE
EQB
EQA
42
+
41
40
39
MODE
INEQ
PEB
PEA
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22
OUTP
OUTM
GND
MODEA MODEB
V
CC
GND
EN
SEL2 SEL1
GND
INM
INP
GND
OAMPB OAMPA
V
CC
INAM GND INBP INBM GND V
CC
INAP GND EN GND OUTBM OUTBP GND OUTAM OUTAP GND V
CC
*CONNECT EXPOSED PAD TO GND.
*EP
MAX4986
PIN NAME FUNCTION
1, 17, 22, 38 V
CC
Power-Supply Input. Bypass V
CC
to GND with 1FF and 0.01FF capacitors in parallel as close to the
device as possible; recommended for each V
CC
pin.
2 OAMPA
OUTAP/OUTAM Output Level Selection. Drive OAMPA high for low output amplitude. Drive OAMPA
low or leave unconnected for high output amplitude. See the Electrical Characteristics table.
OAMPA is internally pulled down by a 330kI (typ) resistor.
3 OAMPB
OUTBP/OUTBM Output Level Selection. Drive OAMPB high for low output amplitude. Drive OAMPB
low or leave unconnected for high output amplitude. See the Electrical Characteristics table.
OAMPB is internally pulled down by a 330kI (typ) resistor.
4, 7, 11, 14,
23, 26, 29,
31, 34, 37
GND Ground
5 INP Channel 1 Noninverting Input
6 INM Channel 1 Inverting Input
8 SEL1
Channel 1 Active-Output Selection Input. Drive SEL1 low or leave unconnected to activate A
outputs. Drive SEL1 high to activate B outputs. SEL1 is internally pulled down by a 330kI (typ)
resistor.
9 SEL2
Channel 2 Active-Input Selection Input. Drive SEL2 low or leave unconnected to activate A inputs.
Drive SEL2 high to activate B inputs. SEL2 is internally pulled down by a 330kI (typ) resistor.
10 EN
Enable Input. Drive EN low or leave unconnected for reduced power standby mode. Drive EN high
for normal operation. See Table 1. EN is internally pulled down by a 330kI (typ) resistor.
12 OUTP Channel 2 Noninverting Output
13 OUTM Channel 2 Inverting Output