SY87813LHG - 3.3V Any-Rate 1.3Gbps CDR | Microchip
MPN： SY87813LHG ✓ 啟用中SY87813LHG 概覽
A clock and data recovery IC, commonly called a CDR, is a timing integrated circuit that extracts or reconstructs a usable clock from a serial data stream and aligns the data for downstream processing. The CDR belongs to the broader clock and timing hierarchy, which includes clock buffers, clock generators, phase-locked loops, multipliers, and data-retiming devices. These circuits support the reliable transfer of high-speed information through serial communication, storage, networking, and test systems.
The SY87813LHG supports an unusually broad 28Mbps-to-1.3Gbps operating range in a single device. Its any-rate architecture makes it useful when one board design must accommodate several serial link rates. The 3.3V supply requirement also simplifies power planning for conventional 3.3V digital systems. NRZ signaling compatibility is central to the device's ability to recover timing and retime data in high-speed serial paths.
Technically, the SY87813LHG performs two related functions. Clock recovery separates timing information from the incoming data stream so that a stable clock can be reconstructed, while data retiming aligns the serial data with that recovered clock. This division of responsibility helps reduce accumulated timing uncertainty between transmitter and receiver. The combination is particularly valuable in links where source and destination circuits cannot share a sufficiently stable common clock.
Typical applications include telecom and wireless communication equipment, SDH-based transport systems, network-interface equipment, optical-module electronics, and high-speed backplanes. A 1.3Gbps-capable CDR can also be evaluated for test and measurement systems, industrial control links, and embedded equipment that must recover clocking from received serial data. The exact interface standard and board-level signal integrity still require validation in the final system.
A critical design consideration is that high-speed clock recovery depends on input signal quality as well as device capability. The data and clock inputs must be routed with controlled impedance, short return paths, and minimal discontinuity. Power and ground distribution must remain quiet because reference jitter and supply disturbance can affect recovery margin, especially when the installed link approaches the upper end of the supported range.
This product page combines the identified electrical characteristics, package information, sourcing structure, and application guidance to help engineers evaluate the SY87813LHG for NRZ serial links. It also distinguishes verified component facts from design parameters that must be confirmed against the complete manufacturer datasheet and the specific channel implementation before layout release or production use.
直接替換替代品，適用於 SY87813LHG — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此產品無可直接替換的替代品。
申請替代品SY87813LHG 規格
| Product Type | Any-Rate Clock and Data Recovery Integrated Circuit |
| Manufacturer | Microchip Technology |
| 供應電壓 | 3.3 V |
| Minimum Data Rate | 28 Mbps |
| Maximum Data Rate | 1.3 Gbps |
| Line Signaling | NRZ |
| Clock Recovery | Supported |
| Data Retiming | Supported |
| Functions | 1 function clock recovery circuit |
| 封裝 | 32-pin TQFP with exposed pad |
| Package Type | PQFP32 / TQFP-32 |
| 安裝類型 | Surface Mount |
| Lead-Free Status | Lead Free |
SY87813LHG pqfp32 / tqfp-32 腳位配置指南
SY87813LHG（pqfp32 / tqfp-32 封裝）的腳位配置。 腳位編號、功能與連接圖定義於製造商資料手冊中。請參閱該手冊以取得確切的封裝尺寸與焊接指引。
無詳細腳位定義資料： SY87813LHG.
請參閱 資料表 以查看完整腳位配置。
典型應用
SY87813LHG 適用於 6 應用s: Telecom Serial-Link Recovery, SDH Transport Equipment, High-Speed Backplane Interface, Optical Module Electronics, Wireless Communication Infrastructure, Test and Measurement Systems.
Telecom Serial-Link Recovery
The SY87813LHG fits telecom serial interfaces that require clock recovery and data retiming over a 3.3V NRZ link. Its identified 28Mbps-to-1.3Gbps range allows the same recovery function to cover multiple service rates without changing the device family. In a receiver path, the circuit can reconstruct timing from the incoming stream and align the data before it reaches a framing or protocol-processing block. The principal design requirement is a controlled-impedance channel with adequate jitter and loss margin at the selected rate.
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SDH Transport Equipment
The SY87813LHG is appropriate for evaluating 3.3V SDH transport paths that need recovered timing and aligned NRZ data. The device is categorized as a clock and timing IC and is described in connection with SDH clock-recovery operation. It can be placed where the receiver needs a stable local timing reference or where source and endpoint clocks cannot remain synchronized. Final qualification must account for the equipment's specified line rate, allowable jitter, and recovered-clock phase requirements.
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High-Speed Backplane Interface
The SY87813LHG can be evaluated for a 1.3Gbps-class NRZ backplane receiver when the board needs distributed clock and data recovery. Its maximum identified data rate of 1.3Gbps provides a defined ceiling, while the any-rate capability supports designs that operate at several lower rates. Successful deployment depends on channel simulation, connector and transceiver behavior, return-loss control, and isolation of the recovery device from data-dependent jitter and crosstalk.
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Optical Module Electronics
The SY87813LHG is a candidate for optical-module and optical-network-interface electronics requiring recovered clock and retimed data from a 3.3V NRZ source. It can be used after a high-speed receive path when the downstream logic requires a coherent local timing relationship with the data. Module-level implementation requires careful power distribution, short high-speed routing, controlled reference grounding, and separate consideration of the optical transceiver's jitter and latency characteristics.
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Wireless Communication Infrastructure
The SY87813LHG suits wireless infrastructure equipment with variable-rate NRZ links requiring clock recovery. Its 28Mbps-to-1.3Gbps span can accommodate multiple transport or backplane rates while preserving one receiver architecture. In a baseband or digital-interface block, the recovered clock can support downstream logic that cannot tolerate indefinite phase drift. Integration should account for the transceiver's output characteristics, channel loss, shielding between high-current radio stages and the timing circuit, and the need for stable reference voltage conditions.
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Test and Measurement Systems
The SY87813LHG can support instrumentation that receives NRZ test data and requires a recovered clock aligned with that data. The 3.3V device supports rates from 28Mbps to 1.3Gbps, which is useful for automated test paths spanning multiple link speeds. Engineers should validate the input threshold, jitter tolerance, acquisition behavior, and output timing against the test architecture. Keeping the recovery path away from noisy analog and switching circuitry will help preserve the timing margin needed for repeatable measurements.
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工程參考資料，適用於 SY87813LHG — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 |
|---|---|
| Package | 32-pin TQFP with exposed pad |
| Brand | Microchip Technology |
| Product Type | Any-Rate Clock and Data Recovery IC |
| Supply Voltage | 3.3 V |
| Minimum Data Rate | 28 Mbps |
| Maximum Data Rate | 1.3 Gbps |
| Signal Format | NRZ |
| Clock Recovery | Supported |
| Data Retiming | Supported |
| Lead-Free Construction | Lead Free |
主要差異化特點
- Broad any-rate operating range (對比Fixed-rate clock recovery devices)
- Integrated recovery and retiming (對比Clock-only recovery devices)
- NRZ compatibility for multi-rate links (對比Protocol-specific retiming devices)
設計說明
Route the high-speed NRZ inputs as controlled-impedance traces with short connections to the SY87813LHG. Avoid stubs, right-angle transitions, and unnecessary layer changes, and provide a continuous reference plane beneath the data path. Keep recovery circuitry away from switching nodes and high-current return paths. The manufacturer's reference-design layout should be used to determine exact input, output, reference, and decoupling connections.
Design a quiet 3.3V supply for the SY87813LHG and place local high-frequency bypass capacitance at its supply pins. Route the return current through a low-impedance ground plane and avoid sharing narrow return paths with noisy digital or power-conversion circuits. Confirm the permitted supply tolerance, capacitor requirements, and startup behavior in the complete manufacturer datasheet before fixing the power tree.
Do not treat the 1.3Gbps rating as a guarantee that every physical channel will operate at 1.3Gbps. Validate insertion loss, return loss, crosstalk, transmitter transition time, receiver threshold, and data-dependent jitter across the complete path. A common mistake is evaluating only nominal data rate while overlooking connector loss or an unterminated branch, either of which can erode timing and signal-integrity margin.
Implement the 32-pin TQFP exposed pad according to the manufacturer land pattern and thermal guidance. The exposed pad is part of the package thermal path and should be connected to the specified ground or thermal construction with the prescribed via arrangement. Check the complete package drawing before finalizing solder mask, paste, and via geometry, especially if the device is intended to operate continuously near its maximum data rate.
合規資訊
The exact SY87813LHG ordering code is identified as lead-free. Formal RoHS, REACH, halogen-free, and conflict-minerals declarations were not identified in the available product information.
