SY69952ZH - 155.52Mbps Clock Recovery IC | Microchip
MPN： SY69952ZH ✗ 停產SY69952ZH 概覽
A clock and data recovery transceiver, or CDR, is an integrated circuit that receives a serial data stream, separates or reconstructs its timing relationship, and produces aligned clock and data outputs. In the optical-transport hierarchy, it sits between the line-side high-speed interface and downstream digital logic. The SY69952ZH is therefore a timing-integrity component rather than a general-purpose clock generator or ordinary digital interface IC.
The verified product information identifies OC-3/STS-3 operation, a 155.52Mbps rate, PECL input information, one output, and compatibility with several ATM UNI processors. A separate technical result describes a clock-generator input range of 6.41MHz to 19.64MHz, but the supplied excerpts do not establish how that range maps to every operating mode, supply condition, or pin function. Engineers should therefore use the manufacturer datasheet for final acquisition and circuit-design decisions.
The 28-SOIC package offers through-hole assembly in a 7.50mm-wide body format according to the distributor result. Its size and pin count make it practical for legacy telecommunications boards, industrial transmission equipment, and repair or modernization programs. The package is not a modern high-density surface-mount ball-grid-array solution, so board area and manual or automated through-hole compatibility should be considered.
Typical uses include ATM UNI links, SONET/SDH tributary-rate equipment, Ethernet transport modules, and OC-3/STS-3 line cards. The recovered-clock function is valuable when the receiver must regenerate a stable timing reference before forwarding payload data. The verified material does not provide a full electrical characterization, recommended decoupling, propagation-delay distribution, jitter specification, or absolute maximum-rating table.
When designing a replacement board, verify every pin against the official datasheet and preserve the original channel-length and impedance layout. PECL interfaces are sensitive to biasing, termination, trace geometry, and return paths, so a nominal pin-compatible package alone does not guarantee signal-integrity equivalence. Confirm supply voltage, logic thresholds, reference-clock requirements, and recovery-loop behavior before production use.
直接替換替代品，適用於 SY69952ZH — 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。
此系列的變體
與下列產品可直接替換的同系列型號： SY69952ZH （相同外形與佔位） — 差異在於 Package.
SY69952ZH
✅ 直接替換聯絡詢價
查看資料表 →SY69952Z
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
SY69952
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
SY69952ZC
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →SY69952ZH-TR
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
SY69952ZH 規格
| Product Type | OC-3/STS-3 clock-recovering transceiver |
| 資料速率 | 155.52 Mbps |
| Output Count | 1 output |
| Input Interface | PECL |
| PLL | Yes |
| Recovery Architecture | Single-chip transmitter and receiver |
| Primary Applications | Ethernet, SONET/SDH, and ATM |
| Clock Generator Input Range | 6.41 MHz to 19.64 MHz |
| 封裝 | 28-pin SOIC, 7.50 mm width |
| Package Family | SOIC small-outline integrated-circuit package |
| Assembly Type | Through-hole |
SY69952ZH soic small-outline integrated-circuit package 腳位配置指南
SY69952ZH（soic small-outline integrated-circuit package 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： SY69952ZH.
請參閱 資料表 以查看完整腳位配置。
典型應用
SY69952ZH 適用於 6 應用s: OC-3/STS-3 Telecommunications Links, ATM UNI Processor Interfaces, SONET/SDH Tributary Equipment, Legacy Ethernet Transport Modules, Telecommunications Line-Card Repair, High-Speed Instrumentation and Test Equipment.
OC-3/STS-3 Telecommunications Links
The SY69952ZH fits legacy OC-3/STS-3 transport equipment because the verified listing identifies a 155.52Mbps clock-recovering transceiver and lists OC-3/STS-3 as its purpose. It can sit near a high-speed line interface when the receiver needs recovered timing before payload data is handed to downstream logic. The 28-SOIC package supports through-hole board insertion, but designers should verify the original system's supply, PECL termination, reference-clock arrangement, and timing margin against the manufacturer datasheet.
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ATM UNI Processor Interfaces
The verified datasheet excerpt specifically names seamless operation with PMC-Sierra PM5345, VLSI VNS67200, IgT WAC-013-B/WAC-413-A, and NEC uPD98402 UNI processors. That makes SY69952ZH relevant to legacy ATM UNI equipment where recovered clock and data must be presented consistently to a processor or line-card logic. The replacement decision must be system-specific because the snippets do not provide full pin, voltage, jitter, or acquisition-time data for either the transceiver or the connected processors.
推薦
SONET/SDH Tributary Equipment
The verified product description identifies SONET/SDH among the principal applications for SY69952ZH. In a tributary-rate board, the device can provide the clock-recovery function needed to stabilize a 155.52Mbps serial stream before it is processed by framing, payload, or monitoring logic. The 28-SOIC format is useful for maintaining or repairing older through-hole telecommunications assemblies. New designs should confirm electrical levels and timing margins in the official datasheet rather than relying on the distributor summary alone.
推薦
Legacy Ethernet Transport Modules
Ethernet is explicitly listed among the intended applications for the SY69952ZH, whose verified operating rate is 155.52Mbps. The IC can be considered for legacy line-card or transport modules requiring recovered timing from a high-speed serial stream. Its single output and 28-SOIC package make board compatibility and signal routing especially important during repair or redesign. Confirm the original module's reference-clock topology, logic thresholds, and loop stability because those details are not present in the supplied excerpts.
推薦
Telecommunications Line-Card Repair
The 28-SOIC package and reported 155.52Mbps operation make SY69952ZH a candidate for maintaining older telecommunications line cards rather than designing a new compact high-speed board. Distributor results identify the part as an IC transceiver with clock recovery and report inventory or purchasing channels, but do not provide a universal price or lead time. A repair should begin with exact pinout comparison, continuity checks, supply verification, and waveform testing at the PECL interface before the component is treated as confirmed.
推薦
High-Speed Instrumentation and Test Equipment
A clock-recovering transceiver can be used in legacy test and measurement equipment that needs to regenerate timing from a 155.52Mbps serial signal. SY69952ZH's OC-3/STS-3 identity and ATM-related application history make it more specialized than a general laboratory clock generator. Use it only where the test system already expects its electrical and timing behavior; otherwise, a modern CDR or programmable logic device may offer better documentation and configurability. Bench validation should include jitter margin, lock behavior, and temperature coverage.
推薦
推薦產品摘要
工程參考資料，適用於 SY69952ZH — 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 | SY69952ZH | SY69952Z | SY69952 | SY69952ZC | SY69952ZH-TR |
|---|---|---|---|---|---|---|
| Package | 28-SOIC | 28-SOIC | 28-SOIC, unverified variant | 28-SOIC, unverified variant | 28-SOIC, unverified variant | 28-SOIC, unverified ordering suffix |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
主要差異化特點
- Dedicated OC-3/STS-3 recovery function (對比CY7B952-SXCT)
- ATM and legacy transport compatibility (對比Generic serial transceiver)
- Legacy board footprint continuity (對比24-pin SOIC serial transceiver)
設計說明
The verified interface information identifies PECL input. Preserve the original bias network, termination topology, controlled-impedance routing, and return-path geometry when replacing SY69952ZH. Do not treat the 155.52Mbps label as sufficient to redesign the interface: verify voltage levels, edge rate, source/load termination, and clock/data skew against the manufacturer datasheet before release.
The available search excerpts identify the package and core function but do not provide the complete numbered pin table, supply limits, jitter tolerance, or lock time. Engineers must obtain the official datasheet before assigning power, reference clock, no-connect, or control pins. This is especially important for an apparently similar MPN, because an assumed pin function can damage legacy telecommunications hardware.
Use the original 28-SOIC footprint and keep high-speed clock and data traces short, continuous, and referenced to a suitable ground plane. Separate the recovered-clock path from noisy switching or power-converter routing where practical. After installation, inspect solder bridges and pin-one orientation, then measure supply startup and interface waveforms before enabling the full transmission path.
合規資訊
The supplied snippets do not provide verified environmental or material-compliance claims for SY69952ZH. No standard number should be inferred from the telecommunications application.
