SY87700LSI - 3.3V AnyRate Clock and Data Recovery | Microchip
Артикул: SY87700LSI ✓ АктивенSY87700LSI Обзор
An AnyRate clock and data recovery IC is a clock-and-timing device that extracts or recovers a usable clock from an incoming data stream and can retime the associated data. In the broader semiconductor hierarchy, this device belongs to clock and timing ICs, application-specific timing integrated circuits, and ultimately the wider semiconductor category. Its primary role is to support reliable signal transfer in SONET, SDH, ATM, and other high-speed data-transmission systems.
The verified product information identifies a 3.3 V supply, an operating data-rate range of 32 Mbps to 175 Mbps, and AnyRate clock and data recovery operation. The Microchip family page additionally identifies the related SY87700 family as supporting rates up to 208 Mbps, indicating a broader family capability than the 175 Mbps figure stated for SY87700LSI. The industrial temperature range associated with the SY87700L family is -40°C to +85°C.
The SY87700LSI integrates clock recovery and data-retiming functions in one device, reducing the need for separate recovery circuitry in a communication link. This integration can simplify board partitioning while helping maintain timing alignment between the recovered clock and outgoing data. Its 32-pin TQFP construction provides a conventional surface-mount interface for equipment assembled using standard semiconductor manufacturing processes.
Typical uses include SONET and SDH transport systems, ATM links, telecommunications line equipment, and other NRZ-based high-speed data links where the transmitter and receiver require an elastic or recovered data interface. It may also support proprietary backplane or serial-link architectures operating within its specified 32 Mbps to 175 Mbps range.
Designers should verify the complete datasheet for differential impedance, reference-clock requirements, jitter tolerance, loop bandwidth, bypass behavior, and power-supply sequencing before layout. Input and output return paths must be controlled because a clock-and-data recovery IC can amplify timing degradation when its input signal quality is inadequate.
This product record consolidates the verified manufacturer specifications, distributor availability references, package information, and drop-in family comparison into an engineering-oriented guide. It distinguishes confirmed SY87700LSI data from parameters that still require confirmation from the full manufacturer datasheet.
Аналоги без доработки для SY87700LSI — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с SY87700LSI (тот же форм-фактор и посадочное место) — отличается по Product Type.
SY87700LHG
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
SY87700LHI
✅ Прямая заменаУточнить цену
SY87700LSI Характеристики
| Product Type | AnyRate clock and data recovery IC |
| Напряжение питания | 3.3 V |
| Minimum Data Rate | 32 Mbps |
| Maximum Data Rate | 175 Mbps |
| Related Family Maximum Data Rate | 208 Mbps |
| Data Encoding | NRZ |
| Operating Principle | Clock recovery and data retiming |
| Диапазон рабочих температур | -40°C to +85°C |
| Package Type | 32-pin TQFP |
| Тип монтажа | Surface mount |
| Manufacturer | Microchip Technology |
| Product Lifecycle Status | In production |
Руководство по цоколевке SY87700LSI в корпусе 32-pin tqfp
Цоколевка для SY87700LSI (корпус 32-pin tqfp). Нумерация выводов, функции и схемы подключения определены в техническом описании производителя. Обратитесь к нему для точного посадочного места и рекомендаций по пайке.
Нет подробных данных о распиновке для SY87700LSI.
Обратитесь к даташиту для полной конфигурации выводов.
Типичное применение
SY87700LSI подходит для 6 применениеs: SONET Transport Equipment, SDH Line Interfaces, ATM Backplane Interfaces, High-Speed Telecommunications Line Cards, High-Speed Serial Backplanes, Instrumentation and Test Equipment.
SONET Transport Equipment
The SY87700LSI fits SONET transport interfaces because it combines clock recovery and data retiming for NRZ links operating from 32 Mbps to 175 Mbps. Placing it at a high-speed serial interface can regenerate timing information before downstream logic processes the data, helping isolate the receiver from accumulated phase and timing errors. The 3.3 V supply also matches common telecommunications board requirements. Design verification must cover the exact SONET line rate, reference-clock arrangement, jitter specification, and differential impedances defined by the complete Microchip datasheet.
SDH Line Interfaces
The SY87700LSI is appropriate for SDH line-interface circuitry requiring recovered timing and retimed NRZ data at rates within its verified 32 Mbps to 175 Mbps range. Its integrated recovery function can reduce the number of separate timing blocks needed at a serial transceiver boundary. This is particularly useful when downstream parallel logic needs a stable timing relationship to the incoming data. Engineers should confirm loop bandwidth, jitter tolerance, bypass behavior, and reference-clock requirements in the manufacturer data sheet before fixing the system timing budget.
ATM Backplane Interfaces
The SY87700LSI can support ATM and ATM-compatible serial links where the receiver must recover clock timing and regenerate outgoing data. Its AnyRate architecture is relevant when one clock-and-data recovery device must cover multiple rates within the verified 32 Mbps to 175 Mbps span. In a backplane, placement and return-path control remain critical because reflections and data-dependent jitter can prevent the receiver from locking reliably. Signal-integrity simulations and the data sheet's jitter and lock requirements should be used together before implementation.
High-Speed Telecommunications Line Cards
A telecommunications line card operating from 3.3 V can use the SY87700LSI to recover clock and data from a high-speed NRZ stream before forwarding information to framing or switching logic. The verified 175 Mbps maximum supports moderate-speed legacy and proprietary links while the 32-pin TQFP package supports conventional surface-mount assembly. Designers must account for the regulator's supply noise, provide return paths for high-speed signals, and verify startup behavior and reference-clock validity according to the manufacturer's system interface guidance.
High-Speed Serial Backplanes
The SY87700LSI can be evaluated for proprietary serial backplanes carrying NRZ data at rates from 32 Mbps to 175 Mbps when the board has adequate loss and jitter margin. Clock recovery and data retiming provide a useful boundary function between a high-speed serial channel and downstream digital logic. The device should not be selected without verifying input sensitivity, output jitter, lock behavior, and differential impedance. Controlled-length traces, continuous reference planes, appropriate terminations, and loss-managed routing are necessary to keep the recovered clock usable.
Instrumentation and Test Equipment
The SY87700LSI may fit instrumentation and test modules that exchange clocked data over NRZ links within the verified 32 Mbps to 175 Mbps range. Recovering the clock directly from the received stream can simplify source-synchronous or parallelized processing where the transmitter does not provide a usable forwarded clock. The device's 3.3 V operation is convenient for mixed-signal test systems, but jitter and reference-clock requirements must be considered as part of the instrument's measurement uncertainty. Thermal, power-supply, and layout checks remain necessary during prototype validation.
Справочные инженерные данные для SY87700LSI — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | SY87700LHG | SY87700LHI |
|---|---|---|---|
| Package | 32-TQFP | 32-TQFP | 32-TQFP |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology |
| Product Type | AnyRate clock and data recovery IC | Clock and data recovery IC | Clock and data recovery IC |
| Supply Voltage | 3.3 V | 3.3 V | 3.3 V |
| Minimum Data Rate | 32 Mbps | 32 Mbps | 32 Mbps |
| Maximum Data Rate | 175 Mbps | 175 Mbps | 175 Mbps |
Ключевые отличия
- Confirmed active-family positioning (против SY87700LHG)
- Same verified data-rate class (против SY87700LHI)
- Common package integration (против SY87700LHG)
Заметки по проектированию
Route the recovered clock, data outputs, reference inputs, and supply connections over continuous return planes. Keep the clock-and-data paths away from switching nodes and noisy digital return currents. Because this device operates on signals up to 175 Mbps, impedance-controlled routing and short return paths are more valuable than purely geometrically short traces.
Validate the receive channel with a signal-integrity model that includes transmitter edge rate, connector or package loss, return loss, and receiver threshold. Data-dependent jitter and crossing-point distortion must be checked against the SY87700 family jitter requirements. The verified excerpts do not provide the complete jitter-tolerance curve, so system margins cannot be calculated from the available data.
Provide a low-noise 3.3 V rail and place local decoupling at the supply pins using the capacitance and layout prescribed by the complete Microchip data sheet. Avoid sharing the sensitive return path with high-current loads. The verified excerpts do not specify supply-current limits, capacitor values, or power-up sequencing, so those values must not be inferred during schematic design.
Do not treat a matching TQFP package and 32 Mbps to 175 Mbps rate range as sufficient proof of interchangeability. Before replacing SY87700LSI with SY87700LHG or SY87700LHI, compare pin names, reference-clock configuration, bypass mode, differential input impedance, output amplitude, lock behavior, and timing margins. Package suffix changes can also represent grade or temperature differences.
Информация о соответствии
The supplied manufacturer and distributor excerpts do not provide specific RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations. These values remain unknown rather than being inferred from the manufacturer name or package type.
