MAX3676EHJ+T Analog Devices Integrated Circuit (Quad Flat Packages) In Stock
Analog Devices MAX3676EHJ+T is a clock and data recovery IC for OC-12/STM-4 fiber optic links, operating at 622 Mbps from a single 3.3V supply. It extracts a low-jitter clock from the serial data stream and provides PECL-compatible clock and data outputs. Available from stock with worldwide shipping.
- Manufacturer
- Analog Devices
- Package
- Quad Flat Packages
- Pin Count
- 32
- Lifecycle
- ACTIVE
- Datasheet
- MAX3676EHJ+T Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of MAX3676EHJ+T?
- 622 Mbps CDR operation targets OC-12 and STM-4 SONET/SDH fiber optic receivers with fully integrated VCO requiring no external LC tank
- Single 3.3V supply and PECL-compatible differential outputs simplify board-level integration with existing fiber optic transceiver modules and framer ICs
- Low output jitter performance enables compliance with ITU-T G.813 and Bellcore GR-253 wander and jitter transfer specifications for telecom-grade line cards
What is MAX3676EHJ+T used for?
The MAX3676EHJ+T is designed for OC-12 and STM-4 SONET/SDH optical receiver line cards in metro and access network equipment, where it recovers a 622 MHz clock from the incoming 622 Mbps NRZ serial data stream. Telecom equipment designers use it in add-drop multiplexers, cross-connect switches, and optical network units (ONU) that must meet strict jitter performance standards at the 622 Mbps interface. It also serves as the CDR stage in fiber channel test equipment and protocol analyzers requiring a stable recovered clock output for downstream framer and deserializer ICs.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the MAX3676EHJ+T datasheet?
MAX3676EHJ+T Datasheet DownloadOfficial datasheet from Analog Devices
What are equivalent replacements for MAX3676EHJ+T?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
At what data rate does the MAX3676EHJ+T recover clock and data, and which telecom standards does it target?
The MAX3676EHJ+T operates at 622 Mbps, directly supporting OC-12 and STM-4 SONET/SDH framing rates. It recovers a 622 MHz clock from the incoming NRZ data stream and presents it on PECL-compatible differential outputs, meeting the jitter specifications of ITU-T G.813 and Bellcore GR-253 for telecom-grade line cards.
Does the MAX3676EHJ+T require an external VCO or crystal reference for clock recovery?
No. The MAX3676EHJ+T integrates an on-chip VCO that requires no external LC tank circuit or reference crystal for data-referenced clock recovery at 622 Mbps. This reduces BOM size and board area compared to discrete PLL-based CDR implementations, which typically require external inductors and varactor diodes.
How does the 3.3V supply voltage of the MAX3676EHJ+T simplify its integration with modern fiber optic transceiver modules?
Operating from a single 3.3V rail aligns with the supply voltage of SFP and SFF transceiver modules and modern SONET framer ICs, eliminating the need for a separate 5V supply plane on the line card. Power consumption is reduced compared to 5V ECL-based CDR solutions, which is important in high-density 622 Mbps port cards where thermal management is a constraint.
What output interface does the MAX3676EHJ+T use and how does it connect to a downstream SONET framer?
The device provides PECL-compatible differential clock and data outputs. These connect directly to the PECL or LVPECL inputs of SONET/SDH framer and mapper ICs through AC-coupling capacitors and bias resistors, typically 50-ohm terminated to VCC minus 2V, without requiring additional signal conditioning between the CDR and framer stages.
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Why Buy from FindMyChip
About Analog Devices
Analog Devices (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing integrated circuits used in virtually all types of electronic equipment.
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