SY87700VSC - 175Mbps CDR | Microchip Technology
MPN: SY87700VSC ✗ Cuối đờiSY87700VSC Tóm tắt
A clock and data recovery IC, or CDR, belongs to the clock and timing IC family within application-specific clock and timing semiconductors. It extracts a usable clock from a serialized data stream and can also recover or retime data when the system requires a cleaner relationship between clock and data. In telecommunications equipment, this function supports synchronization across high-speed network interfaces.
The SY87700VSC supports data rates of 32 Mbps through 175 Mbps, making it applicable to legacy and emerging SONET/SDH, ATM, and Ethernet transport paths. Its 3.3 V and 5 V operating capability provides supply-voltage flexibility, while the differential PECL interface supports high-speed, noise-sensitive transmission links. The device is identified as a phase-locked-loop clock and data recovery product in the supplied cross-reference data.
The integrated PLL architecture recovers timing information and establishes the relationship between the incoming serial stream and the recovered output. According to the manufacturer datasheet, the PLL complies with the proposed SONET/SDH jitter specifications in Bellcore GR-253-CORE, Issue 2, December 1995 and ITU-T Recommendation G.958 when used with differential inputs and outputs. Those standards appear directly in the supplied datasheet source.
Typical deployments include SONET/SDH line-interface equipment, ATM switching and transmission systems, Ethernet network-interface modules, and telecommunications line cards. The 175 Mbps upper rate and one-output configuration are particularly relevant to designs that need recovered timing for an optical or copper transmission section rather than a general-purpose multi-channel clock synthesizer.
Designers should preserve the differential input and output topology specified by the manufacturer and validate transmission-line impedance, termination, and jitter performance in the final board environment. The exposed-pad package also requires careful thermal and layout treatment so that heat is transferred through the pad and ground-plane area rather than concentrated beneath the device.
This page consolidates the verified 175 Mbps, 32 Mbps to 175 Mbps, 3.3 V/5 V, differential PECL, package, application, and standards information into an engineering-oriented product record. It also distinguishes verified characteristics from unspecified electrical details and avoids presenting unavailable pricing or pin data as confirmed facts.
Bộ thay thế dễ dàng lắp đặt cho SY87700VSC — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Không có bộ thay thế dễ dàng lắp đặt sẵn có cho sản phẩm này.
Yêu cầu các bộ thay thếSY87700VSC Thông số kỹ thuật
| Device Type | AnyRate clock and data recovery IC |
| Maximum Data Rate | 175 Mbps |
| Data Rate Range | 32 Mbps to 175 Mbps |
| Recovered Clock Outputs | 1 output |
| Supply Voltage Operation | 3.3 V / 5 V |
| Input Interface | Differential PECL |
| Output Interface | Differential PECL |
| Architecture | Phase-locked-loop clock and data recovery |
| Hộp | 28-pin SOIC with exposed pad |
| Số chân | 28 pins |
| Kiểu lắp đặt | Surface mount |
| Ethernet Compatibility | Supported application |
| SONET/SDH Compatibility | Supported application |
| ATM Compatibility | Supported application |
| Bellcore Jitter Specification | GR-253-CORE, Issue 2, December 1995 |
| ITU-T Jitter Recommendation | G.958 |
Hướng dẫn cấu hình chân SY87700VSC 28-pin soic with exposed pad
Cấu hình chân cho SY87700VSC (28-pin soic with exposed pad gói). Số thứ tự chân, chức năng và sơ đồ kết nối được xác định trong tài liệu thông số kỹ thuật của nhà sản xuất. Tham khảo nó để biết footprint và hướng dẫn hàn chính xác.
Không có dữ liệu chân cụ thể sẵn có cho SY87700VSC.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
SY87700VSC phù hợp cho 6 Áp dụngs: SONET/SDH Transmission Equipment, ATM Network Interface Modules, Ethernet Backplane and Line Cards, Telecommunications Line Cards, Clock-and-Data Recovery Test Equipment, Industrial High-Speed Data Links.
SONET/SDH Transmission Equipment
The Microchip Technology SY87700VSC fits a SONET/SDH line interface that must recover timing from a high-speed serial stream. Its verified 32 Mbps to 175 Mbps operating range and one recovered-clock output provide a defined function for network transport equipment, while the differential PECL interfaces support high-speed clock and data paths. The manufacturer datasheet states that the PLL complies with Bellcore GR-253-CORE, Issue 2, December 1995 and ITU-T Recommendation G.958 when used with differential inputs and outputs. Designers should preserve those differential conditions, validate jitter in the complete channel, and account for the exposed-pad thermal and grounding requirements of the 28-pin SOIC package.
Được đề xuất
ATM Network Interface Modules
The SY87700VSC is suitable for ATM equipment requiring clock recovery from serialized data at rates within its verified 32 Mbps to 175 Mbps range. The AnyRate CDR architecture, single recovered output, and differential PECL signal path align with a dedicated transmit or receive timing section rather than a general-purpose clock generator. In implementation, the differential traces should be routed as controlled-impedance connections with the manufacturer’s specified termination network. Signal-integrity and jitter validation must cover the connector or optical-driver path, because device compliance with GR-253-CORE and G.958 is conditional on the prescribed differential operating conditions.
Được đề xuất
Ethernet Backplane and Line Cards
The SY87700VSC can be evaluated for Ethernet line-card or backplane timing sections operating at a data rate accepted by its verified 32 Mbps to 175 Mbps range. Its recovered-clock output provides a dedicated timing reference, and the differential PECL interface can fit legacy high-speed communication architectures. The design must ensure that the selected Ethernet lane rate, coding scheme, clock topology, and loss budget are compatible with this older AnyRate CDR architecture. Because verified information does not provide detailed Ethernet BER or jitter-margin figures, bench validation is required before production release.
Được đề xuất
Telecommunications Line Cards
A telecommunications line card requiring recovered data and clock can use the SY87700VSC within the supported 32 Mbps to 175 Mbps range. The device’s single output, 3.3 V or 5 V operation, and differential PECL interfaces are useful when the line-card architecture includes external line drivers, mux components, or optical interfaces. The exposed pad should be tied and thermally coupled according to the manufacturer datasheet rather than treated as an unused mechanical feature. Since the supplied data does not specify total-current limits, operating temperature, or package thermal resistance, those details must be confirmed from the full datasheet before thermal and power budgeting.
Được đề xuất
Clock-and-Data Recovery Test Equipment
The SY87700VSC can serve as the recovery element in a test fixture or communications analyzer that recreates SONET/SDH, ATM, or related serial links. Its verified range from 32 Mbps through 175 Mbps and differential PECL interfaces allow repeatable testing of link timing without relying on a full commercial network. Test-equipment design should include controllable stimulus, calibrated measurement paths, and a known-good reference clock. Because the supplied data does not specify loopback modes, jitter-transfer curves, or deterministic jitter limits, these operating details must be extracted from the manufacturer datasheet before defining the instrument’s measurement capability.
Được đề xuất
Industrial High-Speed Data Links
The SY87700VSC may be used in an industrial control or data-acquisition enclosure that requires recovery of timing from a legacy differential serial stream at a supported rate between 32 Mbps and 175 Mbps. Differential PECL signaling can support short controlled-impedance interconnects, while the single recovered output provides one timing reference. Industrial implementation should verify environmental temperature limits, power-supply tolerances, and EMC behavior because those specifications are not included in the supplied verified excerpts. PCB layout should preserve symmetric differential geometry, minimize stubs, and provide the recommended exposed-pad thermal connection to maintain reliable performance in a potentially noisy enclosure.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho SY87700VSC — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này |
|---|---|
| Package | 28-pin SOIC with exposed pad |
| Brand | Microchip Technology |
| Device Type | AnyRate clock and data recovery IC |
| Maximum Data Rate | 175 Mbps |
| Data Rate Range | 32 Mbps to 175 Mbps |
| Output Count | 1 output |
| Supply Voltage | 3.3 V / 5 V |
| Interface | Differential PECL inputs and outputs |
| Target Applications | Ethernet, SONET/SDH, and ATM |
| Architecture | Phase-locked-loop clock and data recovery |
Bảo phân biệt quan trọng
- Broad verified operating-rate range in an AnyRate CDR (vsSY87700LHI)
- One-output clock-and-data recovery configuration (vsSY87700LHG-TR)
- Dual 3.3 V and 5 V operating capability (vsSY87700LHI)
- Explicit differential-use basis for telecommunications jitter specifications (vsSY87700LHG-TR)
Ghi chú thiết kế
Route the differential PECL inputs and outputs as short, symmetric pairs with continuous reference planes and no unnecessary stubs. The manufacturer's stated GR-253-CORE and ITU-T G.958 compliance is conditional on differential operation, so changes to topology, connector launches, or return paths can alter the achieved jitter behavior. Keep external termination and coupling components close to the device and validate the completed PCB with the intended transceiver or load.
Treat the exposed pad as both an electrical connection and a thermal path. Follow the manufacturer's layout guidance for the pad connection and provide uninterrupted copper beneath the package where permitted by the pin configuration. The supplied excerpts do not provide junction temperature, total power dissipation, or thermal resistance, so a complete thermal calculation requires those datasheet values and the actual 3.3 V or 5 V operating condition.
Preserve the manufacturer-defined differential interface environment from source to termination. Differential PECL routing should maintain controlled impedance, adequate spacing from unrelated clocks and switching nodes, and an uninterrupted return path. Because the part is intended for 32 Mbps to 175 Mbps clock and data recovery, perform eye, jitter, and BER-oriented validation across operating temperature and supply tolerance rather than inferring compliance from data rate alone.
Plan the 3.3 V or 5 V rail according to the exact pin and termination arrangement shown in the manufacturer datasheet. PECL interfaces may require coordinated voltage-domain treatment, so the supply cannot be assumed to be interchangeable without checking every input and output. Keep high-current return paths close to the device and use local decoupling recommendations from the datasheet; no verified current consumption or capacitor values were supplied for this record.
Thông tin tuân thủ
The verified manufacturer datasheet references Bellcore GR-253-CORE, Issue 2, December 1995 and ITU-T Recommendation G.958 for differential operating conditions. No verified RoHS, REACH, lead-free, halogen-free, conflict-minerals, or automotive qualification declaration was supplied.
