MAX3690ECJ-T Maxim Integrated Products, MAX3690ECJ-T Datasheet - Page 6
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MAX3690ECJ-T
Manufacturer Part Number
MAX3690ECJ-T
Description
Communication ICs - Various
Manufacturer
Maxim Integrated Products
Type
SDH/SONET 8:1 Serializerr
Datasheet
1.MAX3690ECJ.pdf
(8 pages)
Specifications of MAX3690ECJ-T
Mounting Style
SMD/SMT
Operating Supply Voltage
3.3 V
Supply Type
Analog
Package / Case
TQFP-32
Data Rate
622 Mbps
Supply Current
60 mA
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
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
capacitor 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 MAX3690 data outputs.
+3.3V, 622Mbps, SDH/SONET 8:1 Serializer
with Clock Synthesis and TTL Inputs
6
__________Applications Information
CC
_______________________________________________________________________________________
- 2V) termination voltage is not available. If AC
Alternative PECL-Output Termination
Layout Techniques
Figure 3. Alternative PECL-Output Termination
MAX3690
MAX3690
SD+
SD+
SD-
SD-
V
CC
Z
Z
Z
Z
+3.3V
0
0
0
0
= 50Ω
= 50Ω
= 50Ω
= 50Ω
- 2V
130Ω
50Ω
82Ω
130Ω
50Ω
82Ω
HIGH-
IMPEDENCE
INPUTS
PECL
INPUTS