MAX3984UTE+ Maxim Integrated Products, MAX3984UTE+ Datasheet - Page 11

• Manufacturer Part Number: MAX3984UTE+
• Description: IC PREMP DRIVER 1CH 16-TQFN
• Manufacturer: Maxim Integrated Products
• Type: Driverr

Specifications of MAX3984UTE+

• Number Of Drivers/receivers: 1/0
• Protocol: Ethernet
• Voltage - Supply: 3 V ~ 3.6 V
• Mounting Type: Surface Mount
• Package / Case: 16-TQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 4. Functional Diagram
The IN_LEV pin sets the LOS assert and deassert lev-
els. When IN_LEV is LVTTL high or open, the LOS
assert threshold is 300mV
low, the LOS assert threshold is 100mV
TX_DISABLE provides manual control for turning the
output off. The MAX3984 has a squelch function that
disables the output when there is an LOS condition. To
disable the squelch function, connect LOS to ground
(see the Squelch section).
TX_DISABLE
OUT_LEV
IN_LEV
PEO
PE1
IN+
IN-
1Gbps to 10Gbps Preemphasis Driver with
2
V
V
V
CC2
CC2
CC2
______________________________________________________________________________________
V
CC2
40kΩ
10kΩ
20kΩ
10kΩ
P-P
LVTTL
LVTTL
LVTTL
LVTTL
V
CML
CC2
. When IN_LEV is LVTTL
V
V
V
CC2
CC2
CC2
P-P
.
EQUALIZER
FIXED
2
1
0
GND
The MAX3984 can automatically detect an incoming
signal and enable or disable the data outputs. To
enable squelch, the LOS pin must be connected to a
TTL high or V
Internally, TX_DISABLE and LOS are connected through
an OR-gate to control the CML outputs. The outputs are
disabled if LOS asserts. To turn off the squelch function,
LOS must be pulled to TTL low. The output can also be
disabled when TX_DISABLE is forced high.
DETECT
SIGNAL
LIMITER
Receive Equalizer
CC
Applications Information
PREEMPHASIS
MAX3984
with a pullup resistor (≥ 4.7kΩ).
CML
Squelch
V
OUT+
OUT-
LOS
CC2
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