MAX3693ECJ+ Maxim Integrated Products, MAX3693ECJ+ Datasheet - Page 7

• Manufacturer Part Number: MAX3693ECJ+
• Description: IC 4:1 SERIALIZER 622MBPS 32TQFP
• Manufacturer: Maxim Integrated Products

Specifications of MAX3693ECJ+

• Function: Serializer
• Data Rate: 622Mbps
• Input Type: LVDS
• Output Type: PECL
• Number Of Inputs: 4
• Number Of Outputs: 1
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 32-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 3 shows alternative PECL output-termination
methods. Use Thevenin-equivalent termination when a
(V
coupling is necessary, be sure that the coupling capac-
itor is placed following the 50Ω or Thevenin-equivalent
DC termination.
For best performance, use good high-frequency layout
techniques. Filter voltage supplies and keep ground
connections short. Use multiple vias where possible.
Also, use controlled-impedance transmission lines to
interface with the MAX3693 clock and data inputs and
outputs.
Figure 3. Alternative PECL-Output Termination
CC
MAX3693
MAX3693
- 2V) termination voltage is not available. If AC
Alternative PECL-Output Termination
SD+
SD+
SD-
SD-
+3.3V, 622Mbps, SDH/SONET 4:1 Serializer
Applications Information
_______________________________________________________________________________________
V
CC
Z
Z
Z
Z
+3.3V
0
0
0
0
- 2V
= 50Ω
= 50Ω
= 50Ω
= 50Ω
with Clock Synthesis and LVDS Inputs
130Ω
50Ω
82Ω
Layout Techniques
130Ω
50Ω
82Ω
HIGH-
IMPEDENCE
INPUTS
PECL
INPUTS
TRANSISTOR COUNT: 2925
___________________Chip Information
TOP VIEW
PCLKI+
PCLKI-
RCLK+
RCLK-
GND
GND
V
V
CC
CC
25
26
27
28
29
30
31
32
MAX3693
TQFP
Pin Configuration
16
15
14
13
12
11
10
9
V
SD+
SD-
V
V
PCLKO+
PCLKO-
GND
CC
CC
CC
7