max9234eumtd Maxim Integrated Products, Inc., max9234eumtd Datasheet - Page 13

• Manufacturer Part Number: max9234eumtd
• Description: Hot-swappable, 21-bit, Dc-balanced Lvds Deserializers
• Manufacturer: Maxim Integrated Products, Inc.

In the following example, the incremental supply current is
calculated for V
where:
I
output).
I
34MHz).
I
The maximum supply current in DC-balanced mode for
V
DC Electrical Characteristics table). Add 10.4mA to get
the total approximate maximum supply current at V
= 5.5V and V
If the output supply voltage is less than V
the reduced supply current can be calculated using the
same formula and method.
At high switching frequency, high supply voltage, and
high capacitive loading, power dissipation can exceed
the package power-dissipation rating. Do not exceed
the maximum package power-dissipation rating. See
the Absolute Maximum Ratings for maximum package
power-dissipation capacity and temperature derating.
I
I
I
CC
= 9.5mA + 0.9mA = 10.4mA.
= C
= (14pF x 1.9V x 0.5 x 34MHz x 21) + (14pF x 1.9V x
RxCLK IN+
RxCLK IN-
= V
PWRDWN
T
RxIN0+
RxIN1+
RxIN2+
RxIN0-
RxIN1-
RxIN2-
V
I
CCO
0.5F
C
T
= C
CC
LVDS CLOCK
= 3.6V at f
Hot-Swappable, 21-Bit, DC-Balanced LVDS
RECEIVER 0
RECEIVER 1
RECEIVER 2
C
LVDS DATA
LVDS DATA
LVDS DATA
RECEIVER
CCO
x 21 (data outputs) + C
V
= 3.6V.
INT
I
______________________________________________________________________________________
= 5.5V - 3.6V = 1.9V
= 5.5V, f
+ C
STROBE
STROBE
STROBE
L
C
Functional Diagram
PLL
9x
= 6pF + 8pF = 14pF
= 34MHz is 106mA (from the
C
= 34MHz, and C
CONVERTER
CONVERTER
CONVERTER
CHANNEL 0
SERIAL-TO-
CHANNEL 1
SERIAL-TO-
CHANNEL 2
SERIAL-TO-
PARALLEL
PARALLEL
PARALLEL
REFERENCE
GENERATOR
DATA
DATA
DATA
CLOCK
T
V
I
RxOUT14–20
f
CCO
RxOUT7–13
RxCLK OUT
C
RxOUT0–6
L
x 1 (clock
= 8pF:
= 3.6V,
CCO
The MAX9234 has a rising-edge output strobe, which
latches the parallel output data into the next chip on the
rising edge of RxCLK OUT. The MAX9236/MAX9238
have a falling-edge output strobe, which latches the
parallel output data into the next chip on the falling
edge of RxCLK OUT. The deserializer output strobe
polarity does not need to match the serializer input
strobe polarity. A deserializer with rising- or falling-
edge output strobe can be driven by a serializer with a
rising-edge input strobe.
MAX9234 TRANSISTOR COUNT: 14,104
MAX9236 TRANSISTOR COUNT: 14,104
MAX9238 TRANSISTOR COUNT: 14,104
PROCESS: CMOS
Rising- or Falling-Edge Output Strobe
TOP VIEW
RxCLK OUT
RxCLK IN+
RxCLK IN-
LVDS GND
LVDS GND
LVDS GND
LVDS V
PLL GND
PLL GND
PWRDWN
RxOUT17
RxOUT18
RxOUT19
RxOUT20
PLL V
RxOUT0
RxIN2+
RxIN0+
RxIN1+
RxIN0-
RxIN1-
RxIN2-
GND
N.C.
CC
CC
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Deserializers
1
2
3
4
5
6
7
8
9
MAX9234
MAX9236
MAX9238
Pin Configuration
TSSOP
Chip Information
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
V
RxOUT16
RxOUT15
RxOUT14
GND
RxOUT13
V
RxOUT12
RxOUT11
RxOUT10
GND
RxOUT9
V
RxOUT8
RxOUT7
RxOUT6
GND
RxOUT5
RxOUT4
RxOUT3
V
RxOUT2
RxOUT1
GND
CCO
CC
CCO
CCO
13