MAX9250ECM+T Maxim Integrated Products, MAX9250ECM+T Datasheet - Page 18

• Manufacturer Part Number: MAX9250ECM+T
• Description: IC DESERIALIZER LVDS 48-LQFP
• Manufacturer: Maxim Integrated Products

Specifications of MAX9250ECM+T

• Function: Deserializer
• Data Rate: 840Mbps
• Input Type: LVDS
• Output Type: LVCMOS
• Number Of Inputs: 1
• Number Of Outputs: 27
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 48-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Separate the LVTTL/LVCMOS outputs and LVDS inputs
to prevent crosstalk. A four-layer PCB with separate lay-
ers for power, ground, and signals is recommended.
The MAX9248/MAX9250 ESD tolerance is rated for
Human Body Model, Machine Model, IEC 61000-4-2 and
ISO 10605. The ISO 10605 and IEC 61000-4-2 standards
specify ESD tolerance for electronic systems. All LVDS
inputs on the MAX9248/MAX9250 meet ISO 10605 ESD
protection at ±30kV Air-Gap Discharge and ±10kV
Contact Discharge and IEC 61000-4-2 ESD protection at
±15kV Air-Gap Discharge and ±10kV Contact
Discharge. All other pins meet the Human Body Model
ESD tolerance of ±2kV. The Human Body Model dis-
charge components are C
(Figure 19). The IEC 61000-4-2 discharge components
are C
10605 discharge components are C
2kΩ (Figure 21). The Machine Model discharge compo-
nents are C
27-Bit, 2.5MHz to 42MHz
DC-Balanced LVDS Deserializers
Figure 19. Human Body ESD Test Circuit
Figure 21. ISO 10605 Contact Discharge ESD Test Circuit
18
______________________________________________________________________________________
S
= 150pF and R
VOLTAGE
VOLTAGE
SOURCE
SOURCE
HIGH-
HIGH-
DC
DC
S
= 200pF and R
CHARGE-CURRENT-
CHARGE-CURRENT-
LIMIT RESISTOR
LIMIT RESISTOR
1MΩ
100pF
330pF
D
C
C
S
S
= 330Ω (see Figure 20). The ISO
S
D
RESISTANCE
RESISTANCE
DISCHARGE
DISCHARGE
STORAGE
CAPACITOR
STORAGE
CAPACITOR
= 100pF and R
1.5kΩ
= 0Ω (Figure 22).
2kΩ
R
R
D
D
S
ESD Protection
= 330pF and R
Board Layout
DEVICE
DEVICE
UNDER
UNDER
D
TEST
TEST
= 1.5kΩ
D
=
Figure 20. IEC 61000-4-2 Contact Discharge ESD Test Circuit
Figure 22. Machine Model ESD Test Circuit
TOP VIEW
LVDSGND
V
PLLGND
REFCLK
CCLVDS
V
VOLTAGE
SOURCE
VOLTAGE
SOURCE
CCPLL
RNG1
RNG0
HIGH-
GND
HIGH-
V
DC
R/F
IN+
IN-
DC
CC
10
11
12
1
2
3
4
5
6
7
8
9
CHARGE-CURRENT-
CHARGE-CURRENT-
LIMIT RESISTOR
LIMIT RESISTOR
150pF
200pF
C
MAX9248/MAX9250
C
S
S
LQFP
RESISTANCE
DISCHARGE
RESISTANCE
STORAGE
CAPACITOR
DISCHARGE
Pin Configuration
STORAGE
CAPACITOR
330Ω
R2
0Ω
R
D
36
35
34
33
32
31
30
29
28
27
26
25
DEVICE
UNDER
RGB_OUT7
RGB_OUT6
RGB_OUT5
RGB_OUT4
RGB_OUT3
RGB_OUT2
RGB_OUT1
RGB_OUT0
PCLK_OUT
LOCK
V
V
DEVICE
UNDER
TEST
CCO
CCOGND
TEST