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

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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

Applications/Uses

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

	622Mbps ATM/SONET Access Nodes
	622Mbps SDH/SONET Transmission Systems
	Add/Drop Multiplexers
	Digital Cross-Connects

Key Specifications: Datacom Serializers/Deserializers

Part Number

Functions

Applications

Target Serial Operating Range (Gbps)

Supply Voltage (V)

Typ. Supply Current (mA)

Configuration

Parallel Interface Data Rate (Mbps)

Serial Interface Data Rate (Mbps)

Parallel Interface Logic Levels

Serial Interface Logic Levels

Number of Rx

Number of Tx

EV-Kit

RoHS Available

Package

Operating Temp. Range (°C)

Price^**

MAX3690

•	Datacom Serializer

•

PON/FTTx

•	SDH/ SONET/ ATM/ DWDM/ PONS

3.3

8-to-1

622

TTL

Diff. 3.3V PECL

Yes

LQFP/32

-40 to +85

$9.50 @ 1k

See All Datacom Serializers/Deserializers (16)

Notes:
^**This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.