MAX3681 Datasheet, PDF (1/8 Pages) Maxim Integrated Products – +3.3V, 622Mbps, SDH/SONET 1:4 Deserializer with LVDS Outputs

19-1091; Rev 0; 6/96
EVAALVUAAILTAIOBNLEKIT
+3.3V, 622Mbps, SDH/SONET
1:4 Deserializer with LVDS Outputs
_________________General Description
The MAX3681 deserializer is ideal for converting
622Mbps serial data to 4-bit-wide, 155Mbps parallel
data in ATM and SDH/SONET applications. Operating
from a single +3.3V supply, this device accepts PECL
serial clock and data inputs, and delivers low-voltage
differential-signal (LVDS) clock and data outputs for
interfacing with high-speed digital circuitry. It also pro-
vides an LVDS synchronization input that enables data
realignment and reframing.
The MAX3681 is available in the extended-industrial
temperature range (-40°C to +85°C), in a 24-pin SSOP
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 622Mbps Serial to 155Mbps Parallel Conversion
o 265mW Power
o LVDS Data Outputs and Synchronization Inputs
o Synchronization Input for Data Realignment and
Reframing
o Differential 3.3V PECL Clock and Data Inputs
________________Ordering Information
PART
MAX3681EAG
TEMP. RANGE
-40°C to +85°C
PIN-PACKAGE
24 SSOP
Pin Configuration appears at end of data sheet.
___________________________________________________________________Typical Operating Circuit
V_CC = +3.3V
PHOTODIODE
VCC = +3.3V
MAX3675
PREAMP
MAX3664
100Ω LIMITING
AMP
DATA
AND
CLOCK
RECOVERY
VCC
PD3+
VCC = +3.3V
130Ω
130Ω
MAX3681
SD+
SD-
100Ω*
PD3-
PD2+
100Ω*
PD2-
PD1+
82Ω
82Ω
100Ω*
PD1-
VCC = +3.3V
130Ω
130Ω
PD0+
100Ω*
PD0-
SCLK+
SCLK-
82Ω
82Ω
PCLK+
100Ω*
PCLK-
OVERHEAD
TERMINATION
*REQUIRED ONLY IF OVERHEAD CIRCUIT DOES NOT INCLUDE INTERNAL INPUT TERMINATION.
THIS SYMBOL REPRESENTS A TRANSMISSION LINE OF CHARACTERISTIC IMPEDANCE Z0 = 50Ω.
SYNC+
GND ^SYNC-
________________________________________________________________ Maxim Integrated Products 1
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