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MAX3690：+3.3V, 622Mbps SDH/SONET 8:1 Serializer with Clock Synthesis and TTL Inputs

Low-Power 622Mbps Mux

The MAX3690 serializer is ideal for converting 8-bit-wide, 77Mbps parallel data to 622Mbps serial data in ATM and SDH/SONET applications. Operating from a single +3.3V supply, this device accepts TTL clock and data inputs, and delivers a 3.3V differential PECL serial-data output. A fully integrated PLL synthesizes an internal 622MHz serial clock from a low-speed crystal reference clock (77.76MHz, 51.84MHz, or 38.88MHz). The MAX3690 is available in the extended-industrial temperature range (-40°C to +85°C) in a 32-pin TQFP package.

Key Features Selectable Reference Clock Frequency:   77.76MHz, 51.84MHz, or 38.88MHz Single +3.3V Supply 77Mbps (8-bit) Parallel to 622Mbps Serial Conversion Clock Synthesis for 622Mbps Serial Data 200mW Power TTL Parallel Clock and Data Inputs Differential 3.3V PECL Serial-Data Output

MAX3690: Typical Operating Circuit Applications/Uses 622Mbps ATM/SONET Access Nodes 622Mbps SDH/SONET Transmission Systems Add/Drop Multiplexers Digital Cross-Connects

DataSheet

Parametrics

Design kits & evaluation modules

• MAX3690EVKIT

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