SY69753LHC - 155Mbps CDR Multiplexer IC | Microchip Technology
MPN: SY69753LHC ✓ فعالSY69753LHC نمای کلی
A clock and data recovery IC is a timing IC that extracts a synchronized clock from a serial data stream and aligns recovered data with that clock. In the signal hierarchy, a CDR belongs to clock and timing ICs, timing recovery ICs, interface ICs, and ultimately the broader semiconductor category. The SY69753LHC targets telecommunications transport networks operating at OC-3-class data rates.
Key verified features include a maximum data rate of 155Mbps, support for Ethernet, SONET/SDH, and ATM OC-3 interfaces, one recovered output, and a 3.3V supply identified by the distributor listing. The component integrates the functions normally associated with a serial-interface multiplexer and timing-recovery circuit into one package. Its 32-TQFP-EP (7x7) surface-mount package supports compact telecommunications and networking equipment.
The IC is positioned for systems in which a 155Mbps serial stream must be recovered and routed while maintaining timing alignment with associated channel-interface circuitry. Compared with passive clock distribution, a CDR performs an active timing function. Compared with a general-purpose transceiver, its application-specific architecture is directed specifically toward Ethernet, SONET/SDH, and ATM OC-3 interface requirements rather than a broad range of data rates.
Typical uses include optical transport equipment, SONET/SDH line-interface modules, ATM OC-3 line cards, packet-network timing subsystems, and legacy or migration-era 155Mbps Ethernet interfaces. In each case, system designers must account for the device's specific reference-clock topology, input/output data format, jitter requirements, and termination network because those detailed implementation values are not contained in the supplied web data.
The primary design consideration is board-level timing integrity. A 155Mbps CDR can be sensitive to trace discontinuities, impedance mismatches, return-path discontinuities, and inadequate reference-clock conditioning. Designers should follow the manufacturer's layout and component-selection guidance, preserve continuous ground and power planes, and validate the complete channel rather than relying only on nominal data-rate compatibility.
This page consolidates the verified distributor specifications, package information, application context, sourcing links, and replacement limitations for the SY69753LHC. It also distinguishes verified facts from electrical parameters that still require confirmation from the manufacturer datasheet, helping engineers make sourcing and design decisions without treating search-result summaries as a complete electrical specification.
جایگزین‌های drop-in برای SY69753LHC — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
SY69753AL
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشده📋 جایگزین مرجع (خارج از کاتالوگ)
SY69753LHC مشخصات
| Product Type | Application-specific clock and data recovery IC |
| Maximum Data Rate | 155Mbps |
| Supported Interfaces | Ethernet, SONET/SDH, ATM OC-3 |
| Output Count | 1 output |
| ولتاژ تغذیه | 3.3V |
| بسته‌بندی | 32-TQFP-EP (7x7) |
| نوع نصب | Surface mount |
| تعداد پایه | 32 pins |
| Clock and Data Recovery Function | Yes |
| Multiplexer Function | Yes |
| Manufacturer | Microchip Technology |
راهنمای پیکربندی پین SY69753LHC 32-tqfp-ep (7x7)
پیکربندی پین برای SY69753LHC (پکیج 32-tqfp-ep (7x7)). شماره‌گذاری پایه‌ها، عملکردها و نمودارهای اتصال در دیتاشیت سازنده تعریف شده است. برای footprint دقیق و دستورالعمل‌های لحیم‌کاری به آن مراجعه کنید.
داده پین‌آوت تفصیلی موجود نیست برای SY69753LHC.
به دیتاشیت برای پیکربندی کامل پین‌ها.
کاربردهای معمول
SY69753LHC مناسب است برای 6 کاربردs: SONET/SDH OC-3 Transport Equipment, ATM OC-3 Line Cards, 155Mbps Ethernet Interface Modules, Optical Transport Line Cards, Packet-Network Timing Subsystems, Telecommunications Test Equipment.
SONET/SDH OC-3 Transport Equipment
The SY69753LHC is suitable for 155Mbps SONET/SDH transport interfaces because the verified DigiKey listing identifies SONET/SDH support and a maximum data rate of 155Mbps. It can serve as the clock-and-data-recovery and multiplexing element where a recovered serial stream must be aligned and routed within an OC-3 line card. The primary implementation benefit is integration of timing recovery and multiplexing in one application-specific IC, but system performance depends on the manufacturer's reference-clock and jitter requirements, which are not present in the supplied excerpts.
پیشنهادی
ATM OC-3 Line Cards
The SY69753LHC fits ATM OC-3 line-card signal-path requirements because its verified feature set includes ATM OC-3 operation at up to 155Mbps. It can be used where recovered clock and data must be multiplexed before passing to other transport or switching circuits. The device may simplify board partitioning compared with separate recovery and multiplexing blocks, although designers must verify propagation delay, reference-clock stability, input sensitivity, and output timing from the manufacturer datasheet before replacing an existing OC-3 implementation.
پیشنهادی
155Mbps Ethernet Interface Modules
The SY69753LHC is relevant to 155Mbps Ethernet interface modules because the verified product classification explicitly lists Ethernet support and a one-output configuration. In a legacy or migration-oriented design, it can perform clock recovery and multiplexing within the serial interface path. Its 32-TQFP-EP (7x7) package allows placement alongside a network PHY and supporting logic, but engineers must match the exact data format and reference-clock arrangement because those interface details are not included in the verified search excerpts.
پیشنهادی
Optical Transport Line Cards
The SY69753LHC can support an OC-3 optical transport line card because it combines clock and data recovery with multiplexing for 155Mbps Ethernet, SONET/SDH, and ATM OC-3 interfaces. The verified single-output configuration makes it useful in point-to-point or tributary-interface arrangements where one recovered channel is required. Layout should emphasize controlled reference-clock routing, continuous return paths, and isolation from noisy switching stages. Jitter, latency, and loss-of-signal behavior must be checked in the manufacturer datasheet before production release.
پیشنهادی
Packet-Network Timing Subsystems
The SY69753LHC is applicable to packet-network timing subsystems that require a dedicated 155Mbps recovery function. Its application-specific clock-and-timing architecture is intended to recover synchronized data from supported serial interfaces rather than merely distribute a reference clock. That distinction can reduce the number of discrete timing blocks in qualified transport equipment. Engineering qualification should nevertheless compare the device's jitter transfer, reference input requirements, acquisition time, and output phase against the complete timing budget, none of which are verified in the supplied snippets.
پیشنهادی
Telecommunications Test Equipment
The SY69753LHC may be used in telecommunications test equipment that interfaces directly with 155Mbps Ethernet, SONET/SDH, or ATM OC-3 streams. Its one-output clock-and-data-recovery function can support a test-channel interface where synchronized data must be observed or injected. The 32-TQFP-EP (7x7) package is convenient for dense instrument electronics, but instrumentation users should validate input jitter tolerance, clock recovery behavior, output amplitude, and loopback timing. These characteristics require the complete manufacturer documentation and cannot be inferred from the distributor summary.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای SY69753LHC — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | SY69753AL |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Package | 32-TQFP-EP (7x7) | 32-TQFP-EP (7x7) - requires datasheet confirmation |
| Product Type | Application-specific clock and data recovery IC | Clock and data recovery IC |
| Maximum Data Rate | 155Mbps | 155Mbps |
| Supported Data Rate | 125Mbps and 155Mbps | 125Mbps and 155Mbps |
| Supply Voltage | 3.3V | 3.3V |
تفاوت‌های کلیدی
- Verified 155Mbps OC-3-class support (در مقابلSY69753AL)
- Integrated clock recovery and multiplexing (در مقابلSY69753AL)
- Defined 3.3V, 32-TQFP-EP construction (در مقابلSY69753AL)
یادداشت‌های طراحی
Treat the SY69753LHC clock and data routes as controlled-impedance 155Mbps signals. Avoid stubs, abrupt width changes, unnecessary vias, and splits in the return path; provide a continuous ground reference beneath the routing region. Because the supplied data does not specify input impedance or allowable jitter, confirm the PCB stack-up and termination values directly from the manufacturer reference design before fabrication.
Place the SY69753LHC close to the interface components and keep its reference-clock path short, symmetric, and isolated from noisy switching nodes. Do not route the reference clock beneath or parallel to high-current power paths without a ground-plane separation strategy. Verify the exposed-pad connection in the package drawing because the verified distributor snippet identifies the EP package but does not state whether that pad is connected to ground or another net.
Follow the manufacturer power-decoupling topology rather than applying a generic bulk-capacitor arrangement. Use the shortest possible supply and ground connections between the device and local high-frequency capacitors, and preserve a low-impedance return beneath the package. The verified 3.3V rating identifies the nominal supply, but permissible voltage tolerance, current consumption, sequencing, and capacitor values are not included in the supplied data and must be confirmed before release.
اطلاعات انطباق
The supplied verified web results do not contain explicit RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals statements for SY69753LHC. These fields remain unknown rather than being inferred from the manufacturer name or general distribution status.
