MAX9220EUM/V+ Maxim Integrated, MAX9220EUM/V+ Datasheet - Page 14

• Manufacturer Part Number: MAX9220EUM/V+
• Description: Serializers & Deserializers - Serdes Programmable DC-Bal 21-Bit Deserializer
• Manufacturer: Maxim Integrated
• Type: Deserializerr

Specifications of MAX9220EUM/V+

• Rohs: yes
• Data Rate: 600 Mbit/s
• Input Type: LVDS
• Output Type: LVCMOS/LVTTL
• Number Of Inputs: 3
• Number Of Outputs: 21
• Operating Supply Voltage: 3 V to 3.6 V
• Operating Temperature Range: - 40 C to + 85 C
• Package / Case: TSSOP-48 EP
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT

Skew margin (RSKM) is the time allowed for degrada-
tion of the serial data sampling setup and hold times by
sources other than the deserializer. The deserializer
sampling uncertainty is accounted for and does not
need to be subtracted from RSKM. The main outside
contributors of jitter and skew that subtract from RSKM
are interconnect intersymbol interference, serializer
pulse position uncertainty, and pair-to-pair path skew.
V
The outputs have a separate supply (V
to systems with 1.8V to 5V nominal input logic levels. The
DC Electrical Characteristics table gives the maximum
supply current for V
switching frequencies with all outputs switching in the
worst-case switching pattern. The approximate incremen-
tal supply current for V
8pF load and worst-case pattern can be calculated using:
where:
I
C
tance.
V
f
The incremental current is added to (for V
or subtracted from (for V
Characteristics table maximum supply current. The
internal output buffer capacitance is C
worst-case pattern switching frequency of the data out-
puts is half the switching frequency of the output clock.
In the following example, the incremental supply current is
calculated for V
where:
I
output).
I
34MHz).
I
Programmable DC-Balance
21-Bit Deserializers
14
I
C
I
I
I
I
T
= incremental supply current.
= 9.5mA + 0.9mA = 10.4mA.
CCO
= C
= (14pF x 1.9V x 0.5 x 34MHz x 21) + (14pF x 1.9V x
= incremental supply voltage.
= output clock switching frequency.
= total internal (C
______________________________________________________________________________________
T
V
Output Supply and Power Dissipation
I
0.5F
C
I
T
I
= C
= C
C
+ C
CCO
x 21 (data outputs) + C
T
V
INT
V
I
T
I
= 5.5V - 3.6V = 1.9V
V
CCO
= 5.5V, f
0.5f
+ C
INT
I
f
CCO
C
) and external (C
C
x 1 (clock output)
L
= 3.6V with 8pF load at several
CCO
x 21 (data outputs)
= 6pF + 8pF = 14pF
other than 3.6V with the same
C
Skew Margin (RSKM)
= 34MHz, and C
< 3.6V) the DC Electrical
CCO
T
INT
L
V
) for interfacing
) load capaci-
I
f
CCO
C
= 6pF. The
L
x 1 (clock
= 8pF:
> 3.6V)
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.
The MAX9210/MAX9214 have a rising-edge output
strobe, which latches the parallel output data into the
next chip on the rising edge of RxCLK OUT. The
MAX9220/MAX9222 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 out-
put strobe polarity does not need to match the serializ-
er input strobe polarity. A deserializer with rising or
falling edge output strobe can be driven by a serializer
with a rising edge input strobe.
CC
= V
Rising- or Falling-Edge Output Strobe
CCO
CC
= 3.6V at f
= 3.6V.
C
= 34MHz is 106mA (from the
CCO
= 3.6V,
CCO