MAX9249GCM/V+T Maxim Integrated Products, MAX9249GCM/V+T Datasheet - Page 30

• Manufacturer Part Number: MAX9249GCM/V+T
• Description: IC SERIALIZER GMSL LVDS 48TQFP
• Manufacturer: Maxim Integrated Products

Specifications of MAX9249GCM/V+T

• Function: Serializer
• Data Rate: 2.5Gbs
• Input Type: LVDS
• Output Type: Serial
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: -40°C ~ 105°C
• Mounting Type: Surface Mount
• Package / Case: 48-TQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Number Of Outputs: -
• Number Of Inputs: -

Gigabit Multimedia Serial Link
Serializer with LVDS System Interface
Table 11. Suggested Connectors and Cables for GMSL
Separate the digital signals and CML/LVDS high-speed
signals to prevent crosstalk. Use a four-layer PCB with
separate layers for power, ground, CML/LVDS, and
digital signals. Layout PCB traces close to each other
for a 100I differential characteristic impedance. The
trace dimensions depend on the type of trace used
(microstrip or stripline). Note that two 50I PCB traces
do not have 100I differential impedance when brought
close together—the impedance goes down when the
traces are brought closer.
Route the PCB traces for a CML/LVDS channel (there
are two conductors per CML/LVDS channel) in parallel to
maintain the differential characteristic impedance. Avoid
vias. Keep PCB traces that make up a differential pair
equal length to avoid skew within the differential pair.
The MAX9249 ESD tolerance is rated for Human Body
Model, IEC 61000-4-2, and ISO 10605. The ISO 10605
and IEC 61000-4-2 standards specify ESD tolerance for
electronic systems. CML/LVDS I/O are tested for ISO
10605 ESD protection and IEC 61000-4-2 ESD protec-
tion. All pins are tested for the Human Body Model. The
Human Body Model discharge components are C
100pF and R
discharge components are C
(Figure 26). The ISO 10605 discharge components are
C
30
JAE Electronics, Inc.
Nissei Electric Co., Ltd.
Rosenberger Hochfrequenztechnik GmbH
S
= 330pF and R
_____________________________________________________________________________________
D
= 1.5kI (Figure 25). The IEC 61000-4-2
D
= 2kI (Figure 27).
VENDOR
S
= 150pF and R
ESD Protection
Board Layout
D
= 330I
S
=
D4S10A-40ML5-Z
Figure 27. ISO 10605 Contact Discharge ESD Test Circuit
Figure 25. Human Body Model ESD Test Circuit
Figure 26. IEC 61000-4-2 Contact Discharge ESD Test Circuit
CONNECTOR
GT11L-2S
MX38-FF
VOLTAGE
VOLTAGE
SOURCE
SOURCE
VOLTAGE
SOURCE
HIGH-
HIGH-
HIGH-
DC
DC
DC
CHARGE-CURRENT-
CHARGE-CURRENT-
CHARGE-CURRENT-
LIMIT RESISTOR
LIMIT RESISTOR
LIMIT RESISTOR
1MI
330pF
100pF
150pF
C
C
C
S
S
S
RESISTANCE
RESISTANCE
DISCHARGE
RESISTANCE
DISCHARGE
DISCHARGE
STORAGE
CAPACITOR
STORAGE
CAPACITOR
STORAGE
CAPACITOR
1.5kI
330I
2kI
R
R
R
D
D
D
F-2WME AWG28
A-BW-Lxxxxx
Dacar 538
CABLE
DEVICE
DEVICE
UNDER
UNDER
DEVICE
UNDER
TEST
TEST
TEST