MAX3691 Datasheet, PDF (1/8 Pages) Maxim Integrated Products – +3.3V, 622Mbps, SDH/SONET 4:1 Serializer with Clock Synthesis and LVDS Inputs

19-1207; Rev 0; 3/97
EVAALVUAAILTAIOBNLEKIT
+3.3V, 622Mbps, SDH/SONET 4:1 Serializer
with Clock Synthesis and LVDS Inputs
_______________General Description
The MAX3691 serializer is ideal for converting 4-bit-
wide, 155Mbps parallel data to 622Mbps serial data in
ATM and SDH/SONET applications. Operating from a
single +3.3V supply, this device accepts low-voltage
differential-signal (LVDS) clock and data inputs for
interfacing with high-speed digital circuitry, and deliv-
ers a 3.3V PECL serial-data output. A fully integrated
PLL synthesizes an internal 622Mbps serial clock from
a 155.52MHz reference clock.
The MAX3691 is available in the extended-industrial
temperature range (-40°C to +85°C), in a 32-pin TQFP
package.
________________________Applications
622Mbps SDH/SONET Transmission Systems
622Mbps ATM/SONET Access Nodes
Add/Drop Multiplexers
Digital Cross Connects
____________________________Features
o Single +3.3V Supply
o 155Mbps Parallel to 622Mbps Serial Conversion
o 215mW Power
o LVDS Parallel Clock and Data Inputs
o Differential 3.3V PECL Serial-Data Output
______________Ordering Information
PART
MAX3691ECJ
TEMP. RANGE
-40°C to +85°C
PIN-PACKAGE
32 TQFP
Pin Configuration appears at end of data sheet.
___________________________________________________Typical Operating Circuit
LVDS CRYSTAL REFERENCE
0.1µF
0.1µF
OVERHEAD
GENERATION
V_CC = +3.3V
PCLKI- PCLKI+ RCLK- RCLK+
PD0+
PD0-
V_CC GND
FIL+
PD1+
PD1-
MAX3691
PD2+
PD2-
PD3+
FIL-
PD3-
PCLKO- PCLKO+
SD- SD+
1.5k
100pF
V_CC = +3.3V
130Ω
24.9k
130Ω
V_CC = +3.3V
MAX3667
THIS SYMBOL REPRESENTS A TRANSMISSION LINE
OF CHARACTERISTIC IMPEDANCE (Z₀ = 50Ω)
82Ω
82Ω
________________________________________________________________ Maxim Integrated Products 1
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