SY87701LSI - 1.25Gbps Clock Data Recovery IC | Microchip
MPN: SY87701LSI ✗ Akhir HayatSY87701LSI Ringkasan
A clock and data recovery IC is a timing-integrity device that reconstructs a usable clock from a combined or separated serial-data stream. In the broader semiconductor hierarchy, a CDR is a clock-and-timing IC used to recover timing information corrupted by noise, jitter, propagation delay, and bandwidth loss. The SY87701 family therefore occupies the interface between high-speed serial communication and the clock-generation circuitry required by transmitters, receivers, serializers, and deserializers.
The verified source information identifies the SY87701 as an AnyRate CDR operating from 32 Mbps to 1.25 Gbps at 3.3 V. AnyRate operation allows the same device to serve multiple link rates without changing the external data rate, which can simplify qualification inventories for equipment supporting more than one serial interface. The SY87701LSI orderable variant is listed with an advanced 28-lead SOIC package, although separate distributor snippets inconsistently describe the family with other package configurations.
Protocol independence is the most important architectural feature for engineers evaluating this part. Instead of imposing a fixed encoding or transport protocol, the recovery circuitry is intended to work across compatible serial links. In a receive path, the recovered clock can provide a timing reference for subsequent deserialization or digital processing. Design work still requires checking the specific protocol, jitter tolerance, reference-clock requirements, input sensitivity, output characteristics, and board-level constraints in the manufacturer datasheet before release to production.
Typical uses include telecom line cards, router and switch interfaces, optical-network equipment, backplane links, clock-generation subsystems, and high-speed test equipment. The device may be especially relevant where a 32 Mbps-to-1.25 Gbps AnyRate range is useful across a family of products. Designers should account for high-speed transmission-line behavior, controlled impedance, receiver sensitivity, reference-clock jitter, and connector or package parasitics when laying out the PCB.
A critical design consideration is that distributor package descriptions are not fully consistent for the SY87701 family. The available source identifies SY87701LSI as a 28-lead SOIC variant, while other family listings mention a 32-pin TQFP. Confirm the exact mechanical drawing, pin numbering, exposed-pad requirements, and exposed pad status directly against the manufacturer documentation before ordering or substituting any related MPN.
This page consolidates the verified Microchip family data, distributor availability information, sourcing links, and engineering guidance into one component record. It also distinguishes confirmed attributes from parameters that still require the manufacturer datasheet, helping engineers evaluate SY87701LSI without treating incomplete distributor descriptions as verified specifications.
Pilihan pengganti yang segera untuk SY87701LSI — sama paket, pin-pin kompatibel. Bahagian paket yang berbeza memerlukan kerja ulang PCB diasingkan.
SY87701L
✅ Masuk Drop-In ⚠️ Spesifikasi Tidak Disahkan📋 Alternatif rujukan (tidak dalam katalog)
SY87701AL
✅ Masuk Drop-In ⚠️ Spesifikasi Tidak Disahkan📋 Alternatif rujukan (tidak dalam katalog)
SY87701LSI Spesifikasi
| Product Type | Clock and data recovery (CDR) integrated circuit |
| Minimum Data Rate | 32 Mbps |
| Maximum Data Rate | 1.25 Gbps |
| Data Rate Range | 32 Mbps to 1.25 Gbps |
| Tegangan Pemberi Arus | 3.3 V |
| Recovery Architecture | Protocol-independent clock and data recovery |
| Operating Rate Mode | AnyRate |
| Kemasan | 28-lead SOIC |
| Jenis Pemasangan | Surface mount |
| Component Category | Clock and timing IC |
| Application Domain | Wireless, RF, communication, and telecom circuits |
Panduan Konfigurasi Pin SY87701LSI 28-lead soic
Konfigurasi pin untuk SY87701LSI (28-lead soic pakai). Penomeran pin, fungsi, dan garis bentuk koneksi ditakrifkan dalam dokumen pengeluar. Rujuk dokumen untuk kebentuk dan pedoman pengasman.
Tiada data garisan pin yang diperoleh untuk SY87701LSI.
Rujuk kepada lembaran data untuk konfigurasi pin penuh.
Aplikasi Biasa
SY87701LSI patut untuk 6 aplikasis: Telecom Serial Interface Recovery, Network Router Timing Recovery, High-Speed Backplane Link, Clock and Data Recovery Subsystem, Optical Network Equipment, Industrial Communication Equipment.
Telecom Serial Interface Recovery
The SY87701LSI fits telecom and wireless serial links that require timing recovery across a broad data-rate range. Its verified AnyRate operation from 32 Mbps to 1.25 Gbps allows one device family to address multiple line rates without relying on a fixed protocol-specific recovery circuit. The part is placed in the receive path to recover timing from the incoming data stream before downstream logic processes it. Compared with a narrow-rate CDR, this range can reduce qualified-part inventory across platform variants. The main design conditions are adequate signal amplitude, controlled board impedance, acceptable reference-clock quality, and compliance with the protocol's jitter and latency limits, all of which must be confirmed from the exact manufacturer datasheet.
Disebarkan
Network Router Timing Recovery
The SY87701LSI can support timing recovery in router, switch, and line-card interfaces where the physical link may operate at rates within the verified 32 Mbps-to-1.25 Gbps range. Its protocol-independent architecture is useful when one recovery implementation must serve several backplane or external-link rates. The CDR would normally receive the high-speed serial stream and provide a recovered timing reference for deserialization or packet-processing logic. Practical deployment requires a reference clock with sufficient stability, controlled-impedance routing, connector and via planning, and validation of jitter tolerance at the intended line rate. The wide rate range is an advantage, but it does not eliminate protocol-specific qualification.
Disebarkan
High-Speed Backplane Link
The SY87701LSI is applicable to high-speed backplane links that require recovered clock and data alignment. Its verified AnyRate range from 32 Mbps to 1.25 Gbps offers flexibility when a backplane supports several lane rates, while the 3.3 V supply aligns it with many mixed-signal communication systems. Placement close to the receiver can help minimize trace loss and jitter accumulation before the recovery circuit. Designers must preserve controlled impedance, add suitable return paths, and account for connector and material losses. Exact reference-clock architecture, input threshold, recovery latency, and jitter performance require confirmation from the Microchip SY87701LSI documentation.
Disebarkan
Clock and Data Recovery Subsystem
The SY87701LSI can serve as the central recovery element in a clock-and-data subsystem used by serializers, parallelizers, or digital signal processors. Its verified protocol-independent operation and 32 Mbps-to-1.25 Gbps range allow it to recover timing independently of the application data format, reducing the need for a separate recovery solution for each supported rate. The design must provide a stable reference source, distribute power cleanly, and isolate noisy switching circuitry from sensitive timing paths. Because output-drive and input-sensitivity details are absent from the supplied records, engineers must verify logic thresholds, edge quality, acquisition behavior, and bypass requirements in the exact datasheet.
Disebarkan
Optical Network Equipment
The SY87701LSI may be used in optical-network and wireless infrastructure equipment where a recovered reference clock is needed for high-speed serial interfaces. The verified 3.3 V operation and AnyRate range of 32 Mbps to 1.25 Gbps make it relevant to equipment supporting several transport or backplane rates. It can be positioned after the line receiver or retimer to reconstruct usable timing before data enters a serializer or processor. Thermal and supply-noise controls are important in compact telecom hardware, while controlled-impedance routing and short high-speed paths help preserve signal integrity. Protocol, jitter, latency, and clock-source constraints must be checked against the manufacturer datasheet before architecture approval.
Disebarkan
Industrial Communication Equipment
The SY87701LSI can support proprietary or industrial serial links that use a clock recovered directly from transmitted data. Its verified 32 Mbps-to-1.25 Gbps AnyRate range provides useful flexibility across equipment families, while its protocol independence avoids tying the timing block to one data format. The component is appropriate where the link has predictable signaling and the system can supply the required reference clock. Industrial deployments must check temperature limits, electromagnetic compatibility, power-supply tolerance, and long-term availability, none of which can be confirmed from the supplied snippets. PCB review should emphasize return-path continuity, decoupling, and isolation from motors, relays, and switching regulators.
Disebarkan
Ringkasan Produk Disebarkan
Data referensi kejuruteraan untuk SY87701LSI — perbandingan, panduan rancangan, dan maklumat kesediaan
Panduan Pilihan
Perbandingan dengan Gantian
| Parametr | Produk Ini | SY87701L | SY87701AL |
|---|---|---|---|
| Package | 28-lead SOIC | 28-lead SOIC - verify before substitution | 28-lead SOIC - verify before substitution |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology |
| Product Type | AnyRate clock and data recovery IC | AnyRate clock and data recovery IC | Lower-power AnyRate clock and data recovery IC |
| Minimum Data Rate | 32 Mbps | 32 Mbps | 32 Mbps |
| Maximum Data Rate | 1.25 Gbps | 1.25 Gbps | 1.25 Gbps |
| Supply Voltage | 3.3 V | 3.3 V | 3.3 V |
| Protocol Independence | Yes | Yes | Yes |
Penyeberangsung Jelas
- Broad AnyRate operating range (vsSY87701L)
- Exact order-code availability in supplied listings (vsSY87701AL)
- Protocol-independent timing recovery (vsSY87701AL)
Catatan Desain
Route the recovered high-speed signals over a continuous reference plane with short, symmetric paths and no unnecessary vias. Place the CDR close to the receiver or retimer output so that trace loss, jitter, and coupling occur before timing recovery rather than after it. Verify the exact SY87701LSI pinout and high-speed layout requirements in the manufacturer datasheet before releasing the layout.
Provide a stable 3.3 V rail and place local decoupling close to the device's supply and ground pins. The exact capacitor values are not available in the verified records and must follow the manufacturer recommendation. Use a quiet reference-clock source, separate sensitive timing circuitry from switching supplies, and avoid sharing return-current paths with high-current digital or power-conversion stages.
Validate the complete channel with the intended data rate, encoding, loss, and jitter rather than relying only on the 1.25 Gbps headline rate. Include connector and via models, controlled-impedance geometry, receiver threshold margin, and acquisition behavior in simulation or bench testing. Confirm the CDR's input sensitivity, jitter tolerance, reference-clock requirement, and recovery latency against the exact datasheet.
Do not treat SY87701, SY87701L, SY87701AL, and SY87701LSI as automatically interchangeable. Verified listings mention 28-lead SOIC and 32-pin TQFP configurations for the family, so package suffixes and pin assignments must be checked. Before substitution, compare mechanical dimensions, pinout, supply rails, reference clock, timing ratings, temperature grade, lifecycle status, and acquisition documentation.
Maklumat Kesediaan
The supplied verified records do not explicitly state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. These fields remain unknown rather than being inferred from the manufacturer or package.
