Datasheet
27-Bit, 2.5MHz to 42MHz
DC-Balanced LVDS Deserializers
18 Maxim Integrated
MAX9248/MAX9250
Board Layout
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.
ESD Protection
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
S
= 100pF and R
D
= 1.5kΩ
(Figure 19). The IEC 61000-4-2 discharge components
are C
S
= 150pF and R
D
= 330Ω (see Figure 20). The ISO
10605 discharge components are C
S
= 330pF and R
D
=
2kΩ (Figure 21). The Machine Model discharge compo-
nents are C
S
= 200pF and R
D
= 0Ω (Figure 22).
RGB_OUT7
RGB_OUT6
RGB_OUT5
RGB_OUT4
RGB_OUT3
RGB_OUT2
RGB_OUT1
RGB_OUT0
PCLK_OUT
LOCK
V
CCO
V
CCOGND
1
2
3
4
5
6
7
8
9
10
11
12
36
35
34
33
32
31
30
29
28
27
26
25
PWRDWN
SS (OUTEN)
CNTL_OUT0
CNTL_OUT1
CNTL_OUT2
CNTL_OUT3
CNTL_OUT4
CNTL_OUT5
CNTL_OUT6
CNTL_OUT7
CNTL_OUT8
DE_OUT
LQFP
MAX9248/MAX9250
13
14
15
16
17
18
19
20
21
22
23
24
48
47
46
45
44
43
42
41
40
39
38
37
RGB_OUT17
RGB_OUT16
RGB_OUT15
RGB_OUT14
RGB_OUT13
RGB_OUT12
RGB_OUT11
RGB_OUT10
RGB_OUT9
RGB_OUT8
V
CCO
V
CCOGND
R/F
RNG1
V
CCLVDS
IN+
IN-
LVDSGND
PLLGND
V
CCPLL
RNG0
GND
V
CC
REFCLK
TOP VIEW
Pin Configuration
STORAGE
CAPACITOR
HIGH-
VOLTAGE
DC
SOURCE
DEVICE
UNDER
TEST
CHARGE-CURRENT-
LIMIT RESISTOR
DISCHARGE
RESISTANCE
1MΩ
R
D
1.5kΩ
C
S
100pF
Figure 19. Human Body ESD Test Circuit
C
S
150pF
STORAGE
CAPACITOR
HIGH-
VOLTAGE
DC
SOURCE
DEVICE
UNDER
TEST
CHARGE-CURRENT-
LIMIT RESISTOR
DISCHARGE
RESISTANCE
R2
330Ω
Figure 20. IEC 61000-4-2 Contact Discharge ESD Test Circuit
STORAGE
CAPACITOR
HIGH-
VOLTAGE
DC
SOURCE
DEVICE
UNDER
TEST
CHARGE-CURRENT-
LIMIT RESISTOR
DISCHARGE
RESISTANCE
R
D
2kΩ
C
S
330pF
Figure 21. ISO 10605 Contact Discharge ESD Test Circuit
STORAGE
CAPACITOR
HIGH-
VOLTAGE
DC
SOURCE
DEVICE
UNDER
TEST
CHARGE-CURRENT-
LIMIT RESISTOR
DISCHARGE
RESISTANCE
R
D
0Ω
C
S
200pF
Figure 22. Machine Model ESD Test Circuit