MAX9205EAI+ Maxim Integrated Products, MAX9205EAI+ Datasheet - Page 11

• Manufacturer Part Number: MAX9205EAI+
• Description: IC SERIALIZER LVDS 28-SSOP
• Manufacturer: Maxim Integrated Products

Specifications of MAX9205EAI+

• Function: Serializer
• Data Rate: 400Mbps
• Input Type: LVTTL/LVCMOS
• Output Type: LVDS
• Number Of Inputs: 10
• Number Of Outputs: 1
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 28-SSOP
• Input Current: +/- 20 uA
• Input Voltage Range (max): 3.6 V
• Interface Type: Parallel LVCMOS/LVTTL
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Operating Supply Voltage: 3.3 V
• Settling Time: 500 ps
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 3 V
• Supply Voltage Range: 3V To 3.6V
• Operating Temperature Range: -40°C To +85��C
• Digital Ic Case Style: SSOP
• No. Of Pins: 28
• Filter Terminals: SMD
• Control Interface: Serial
• Supply Voltage Min: 3V
• Rohs Compliant: Yes
• Data Rate Max: 660Mbps
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

A point-to-point version of the multidrop bus is shown in
Figure 13. The low-jitter MAX9150 10-port repeater is
used to reproduce and transmit the serializer output
over 10 double-terminated point-to-point links.
Compared to the multidrop bus, more interconnect is
traded for more robust hot-plug capability.
The repeater eliminates nine serializers compared to 10
individual point-to-point serializer-to-deserializer con-
nections. Since repeater jitter subtracts from the serial-
izer-deserializer timing margin, a low-jitter repeater is
essential in most high data rate applications.
Multiple serializers and deserializers bused over a dif-
ferential serial connection on a backplane are shown in
Figure 14. The second serializer can be a backup to
Figure 13. Point-to-Point Broadcast Using MAX9150 Repeater
REPEATER
MAX9150
100Ω
MAX9205
MAX9207
______________________________________________________________________________________
ASIC
100Ω
10-Bit Bus LVDS Serializers
ASIC
100Ω
MAX9206
MAX9208
the primary serializer. The typical close spacing (1in or
less) of cards on a backplane reduces the characteris-
tic impedance by as much as half the initial, unloaded
value. Termination resistors that match the loaded char-
acteristic impedance are required at each end of the
bus. The total loaded seen by the serializer is 27Ω in
this case.
For bus LVDS applications, a four-layer PCB that pro-
vides separate power, ground, and input/output signals
is recommended. Separate LVTTL/LVCMOS and bus
LVDS signals from each other to prevent coupling into
the bus LVDS lines.
MAX9206
MAX9208
ASIC
100Ω
Board Layout
11