SY69753LHG - 155Mbps 3.3V PECL CDR | Microchip
MPN: SY69753LHG ✓ সক্রিয়SY69753LHG সারাংশ
A clock and data recovery IC is a specialized timing-device category that regenerates a synchronized clock from a serial data stream, compensates for accumulated phase and timing jitter, and supports deterministic transfer across high-speed communication links. Within the broader hierarchy, the SY69753LHG belongs to clock and timing ICs, interface ICs, and ultimately integrated semiconductors used in telecommunications and data-networking equipment.
Principal device characteristics include support for data rates of 125 Mbps and 155 Mbps, PECL input and output interfaces, one recovered output, PLL support, and a 3.3 V supply. The package combines a 7 mm by 7 mm body with an exposed pad that provides a thermal and ground connection on a multilayer PCB. Published distributor descriptions also identify the part as a surface-mount clock and timing device suitable for precise timing applications.
The SY69753LHG is intended for designs where a transmitted serial stream must be recovered into a usable clock and data pair. Its PLL-based architecture can support clock recovery and phase alignment, while the multiplexer function consolidates timing-related signal routing. The 125 Mbps operating point covers Fast Ethernet-related infrastructure, and the 155 Mbps point aligns with ATM OC-3 and 155 Mbps SONET/SDH-class interfaces. The PECL interface requires source termination, correct common-mode voltage, and controlled-impedance board layout.
Typical uses include ATM network interface equipment, SONET/SDH tributary synchronization, Fast Ethernet line-card clocking, telecommunications backplanes, and optical-transport modules. In these systems, the recovered clock reduces accumulated timing drift and provides a stable reference for downstream retimers, serializers, switching silicon, and test equipment.
When laying out a circuit around the SY69753LHG, treat the exposed pad as a primary ground and thermal connection rather than an unused package feature. Route PECL clocks and data as short, controlled-impedance nets, provide the decoupling and termination required by the device application circuit, and verify source, receiver, and multiplexer compatibility before layout release.
This page combines verified distributor specifications with an engineering-focused assessment of speed, interface type, package implementation, and replacement constraints. It also distinguishes the directly purchasable base part from a tape-and-reel ordering code and documents where complete electrical, pin-level, lifecycle, and pricing information requires confirmation.
এর জন্য ড্রপ-ইন বিকল্প SY69753LHG — একই package, pin-to-pin compatible। ভিন্ন package-এর যেসব পার্টে PCB rework প্রয়োজন সেগুলো বাদ দেওয়া হয়েছে।
SY69753LHG-TR
✅ ড্রপ-ইন📋 রেফারেন্স বিকল্প (ক্যাটালগে নেই)
SY69753LHG বিশেষণ
| Device Type | Clock and Data Recovery (CDR) IC with multiplexer |
| সাপ্লাই ভোল্টেজ | 3.3 V |
| Minimum Data Rate | 125 Mbps |
| Maximum Data Rate | 155 Mbps |
| Input Interface | PECL |
| Output Interface | PECL |
| Output Count | 1 output |
| PLL | Yes |
| Primary Applications | Ethernet, SONET/SDH, and ATM OC-3 |
| প্যাকেজ | 32-pin TQFP with exposed pad |
| Package Dimensions | 7 mm x 7 mm |
| মাউন্টিং টাইপ | Surface mount |
| অপারেটিং তাপমাত্রার পরিসর | -40 C to +85 C |
| Manufacturer | Micrel Semiconductor, now Microchip Technology |
SY69753LHG পিন কনফিগারেশন
| পিন 1 | [DATA_NEEDED: pin 1 name] — Pin function is not available in the verified excerpts |
| পিন 2 | [DATA_NEEDED: pin 2 name] — Pin function is not available in the verified excerpts |
| পিন 3 | [DATA_NEEDED: pin 3 name] — Pin function is not available in the verified excerpts |
| পিন 4 | [DATA_NEEDED: pin 4 name] — Pin function is not available in the verified excerpts |
| পিন 5 | [DATA_NEEDED: pin 5 name] — Pin function is not available in the verified excerpts |
| পিন 6 | [DATA_NEEDED: pin 6 name] — Pin function is not available in the verified excerpts |
| পিন 7 | [DATA_NEEDED: pin 7 name] — Pin function is not available in the verified excerpts |
| পিন 8 | [DATA_NEEDED: pin 8 name] — Pin function is not available in the verified excerpts |
| পিন 9 | [DATA_NEEDED: pin 9 name] — Pin function is not available in the verified excerpts |
| পিন 10 | [DATA_NEEDED: pin 10 name] — Pin function is not available in the verified excerpts |
| পিন 11 | [DATA_NEEDED: pin 11 name] — Pin function is not available in the verified excerpts |
| পিন 12 | [DATA_NEEDED: pin 12 name] — Pin function is not available in the verified excerpts |
| পিন 13 | [DATA_NEEDED: pin 13 name] — Pin function is not available in the verified excerpts |
| পিন 14 | [DATA_NEEDED: pin 14 name] — Pin function is not available in the verified excerpts |
| পিন 15 | [DATA_NEEDED: pin 15 name] — Pin function is not available in the verified excerpts |
| পিন 16 | [DATA_NEEDED: pin 16 name] — Pin function is not available in the verified excerpts |
| পিন 17 | [DATA_NEEDED: pin 17 name] — Pin function is not available in the verified excerpts |
| পিন 18 | [DATA_NEEDED: pin 18 name] — Pin function is not available in the verified excerpts |
| পিন 19 | [DATA_NEEDED: pin 19 name] — Pin function is not available in the verified excerpts |
| পিন 20 | [DATA_NEEDED: pin 20 name] — Pin function is not available in the verified excerpts |
| পিন 21 | [DATA_NEEDED: pin 21 name] — Pin function is not available in the verified excerpts |
| পিন 22 | [DATA_NEEDED: pin 22 name] — Pin function is not available in the verified excerpts |
| পিন 23 | [DATA_NEEDED: pin 23 name] — Pin function is not available in the verified excerpts |
| পিন 24 | [DATA_NEEDED: pin 24 name] — Pin function is not available in the verified excerpts |
| পিন 25 | [DATA_NEEDED: pin 25 name] — Pin function is not available in the verified excerpts |
| পিন 26 | [DATA_NEEDED: pin 26 name] — Pin function is not available in the verified excerpts |
| পিন 27 | [DATA_NEEDED: pin 27 name] — Pin function is not available in the verified excerpts |
| পিন 28 | [DATA_NEEDED: pin 28 name] — Pin function is not available in the verified excerpts |
| পিন 29 | [DATA_NEEDED: pin 29 name] — Pin function is not available in the verified excerpts |
| পিন 30 | [DATA_NEEDED: pin 30 name] — Pin function is not available in the verified excerpts |
| পিন 31 | [DATA_NEEDED: pin 31 name] — Pin function is not available in the verified excerpts |
| পিন 32 | [DATA_NEEDED: pin 32 name] — Pin function is not available in the verified excerpts |
| পিন EP | PAD — Exposed pad; connection and thermal-land details require the manufacturer package drawing |
সাধারণ ব্যবহার
SY69753LHG এর জন্য উপযুক্ত 6 অ্যাপ্লিকেশনs: ATM OC-3 Line Interfaces, SONET/SDH Tributary Timing, Fast Ethernet Network Cards, Telecommunications Backplane Cards, Optical Transport Modules, Precision Timing Test Equipment.
ATM OC-3 Line Interfaces
The SY69753LHG fits 155 Mbps ATM OC-3 interface equipment because the verified specification identifies ATM OC-3 as a primary application and supports a 155 Mbps PECL data path. The CDR recovers timing from the incoming stream, while the integrated multiplexer provides timing-related signal selection for the surrounding line-card logic. Place the device beside the PECL transceiver and downstream retimer, connect its exposed pad to a solid ground plane, and keep the 155 Mbps traces short and impedance controlled. Because the device is specified at 155 Mbps rather than the 2.488 Gb/s OC-48 rate, it is appropriate for tributaries or interfaces operating at the verified 155 Mbps class.
সুপারিশকৃত
SONET/SDH Tributary Timing
The SY69753LHG is applicable to 155 Mbps tributary and timing sections of SONET/SDH equipment because its verified data rate reaches 155 Mbps and its PECL interfaces suit line-card clock distribution. The clock-and-data-recovery function can provide a synchronized reference for a serializer, retimer, or framer, while the PLL feature supports deterministic timing generation. The design should preserve continuous reference-clock routing and place termination close to each PECL receiver. Verify the actual SONET/SDH layer, jitter tolerance, and reference-clock requirements against the manufacturer datasheet because the distributor descriptions do not provide a complete timing budget.
সুপারিশকৃত
Fast Ethernet Network Cards
The SY69753LHG supports 125 Mbps-class Fast Ethernet transports, making it suitable for line cards, legacy routers, and repeater interfaces that need clock and data recovery from a PECL stream. Its verified 3.3 V operation and one recovered output suit low-power communications equipment, while the 32-TQFP exposed-pad package supports compact surface-mount construction. Position the CDR near the PECL transceiver and PHY interface to minimize trace length, then route the recovered clock to the timing-critical loads over a controlled-impedance path. The application requires confirmation that the Ethernet MAC and physical layer can accept the recovered clock and data arrangement provided by the device.
সুপারিশকৃত
Telecommunications Backplane Cards
The SY69753LHG can be used in telecommunications backplane cards where a 125 Mbps or 155 Mbps PECL stream must be conditioned into synchronized clock and data. Its CDR and multiplexer functions reduce the amount of external timing logic needed for a point-to-point link, while the 7 mm by 7 mm TQFP keeps the device compatible with compact multilayer board designs. The exposed pad should be stitched to the ground plane with multiple vias to provide both a low-inductance return and a thermal path. Differential timing skew, connector loss, and the backplane's allowable jitter must be analyzed together before treating this link as reliable.
সুপারিশকৃত
Optical Transport Modules
The SY69753LHG is appropriate for the client-side timing section of optical transport equipment operating at 155 Mbps, where an incoming PECL stream must be recovered before it reaches a serializer or forwarding engine. The device's verified 125 Mbps and 155 Mbps support covers client-rate links associated with ATM and SONET/SDH rather than the full 2.488 Gb/s line rate. The CDR should sit close to the optical transceiver and receive termination, with the recovered clock routed separately to minimize crosstalk into the data path. Confirm the optical module's interface levels, reference clock, and jitter requirements before schematic sign-off.
সুপারিশকৃত
Precision Timing Test Equipment
The SY69753LHG can contribute to test and measurement modules that exercise 155 Mbps PECL interfaces and require recovered clock and data for error injection, loopback, or signal-integrity analysis. Its single recovered output and clock-and-data-recovery function provide the basis for a deterministic timing path, and the 3.3 V supply simplifies integration with modern test-instrument logic. Keep the CDR close to the DUT interface, use controlled-impedance routing, and provide a low-noise reference and proper PECL termination. The supplied sources do not state jitter, lock-range, or acquisition-time limits, so those values must be confirmed from the manufacturer datasheet before defining instrument accuracy.
সুপারিশকৃত
সুপারিশকৃত পণ্যের সারসংক্ষেপ
এর জন্য ইঞ্জিনিয়ারিং রেফারেন্স ডেটা SY69753LHG — তুলনা, ডিজাইন গাইডেন্স এবং কমপ্লায়েন্স তথ্য।
নির্বাচন গাইড
বিকল্পের সাথে তুলনা
| পারামিটার | এই পণ্য | SY69753LHG-TR |
|---|---|---|
| Package | 32-TQFP-EP (7 mm x 7 mm) | 32-TQFP-EP (7 mm x 7 mm) |
| Brand | Microchip Technology | Microchip Technology |
| Device Function | Clock and Data Recovery IC with multiplexer | Clock and Data Recovery IC with multiplexer |
| Supply Voltage | 3.3 V | 3.3 V |
| Data Rate | 125 Mbps to 155 Mbps | 125 Mbps to 155 Mbps |
| Interface | PECL input and PECL output | PECL input and PECL output |
| Output Count | 1 output | 1 output |
| PLL | Yes | Yes |
| Primary Applications | Ethernet, SONET/SDH, ATM OC-3 | Ethernet, SONET/SDH, ATM OC-3 |
| Ordering Format | SY69753LHG | Tape-and-reel ordering code |
মূল পার্থক্যসমূহ
- Purpose-built 155 Mbps PECL clock-and-data recovery (বনামSY69753LHG-TR)
- Integrated multiplexer and PLL in one timing device (বনামSY69753LHG-TR)
- Confirmed telecommunications application coverage (বনামSY69753LHG-TR)
ডিজাইন নোট
Route the SY69753LHG PECL clock and data nets as short, controlled-impedance traces over a continuous ground plane, and place receiver termination close to the input pins. Keep the recovered clock and data paths separated from noisy digital and power-converter routes to limit skew and crosstalk. The verified material confirms a 32-TQFP exposed-pad package but not the complete reference layout, so final impedance, termination, and via guidance must be taken from the manufacturer datasheet.
Connect the exposed pad to the recommended ground plane and use multiple thermal vias to provide both a low-inductance return and a heat-spreading path. Although the supplied distributor records do not state thermal resistance, maximum clock frequency, or acquisition time, a timing IC's switching activity and surrounding power delivery can still create localized junction heating. Validate the power and ground plane with the manufacturer's worst-case reference-clock and load conditions rather than assuming the 7 mm by 7 mm package dissipates heat without copper.
Do not treat every 155 Mbps CDR as interchangeable with the SY69753LHG. The supplied cross-reference search produced only the verified SY69753LHG-TR ordering code and no independent pin-compatible source. Check the exact numbered pins, signal directions, reference-clock requirement, PECL common-mode voltage, and multiplexer topology before using an unverified substitute. Also verify whether a system requires 125 Mbps or 155 Mbps operation because those points have different clock and acquisition characteristics.
কমপ্লায়েন্স তথ্য
The supplied sources do not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. Confirm current declarations with Microchip Technology using the exact orderable part number.
