MK2761ASLF - 27MHz Set-Top Clock Synthesizer | Renesas
Артикул: MK2761ASLF ✗ Снят с производстваMK2761ASLF Обзор
A clock synthesizer is a timing IC that establishes and distributes reference clocks throughout an electronic system. In the broader hierarchy, it belongs to clock and frequency generation, which supports clock and timing ICs and ultimately semiconductor timing infrastructure. Unlike a simple oscillator that provides one frequency, a synthesizer can generate several related clock outputs from a common reference, helping synchronize video, audio, communications, and control subsystems in a set-top box.
The MK2761ASLF combines a 27 MHz reference input capability with analog PLL-based frequency synthesis and multiple clock outputs. Its 16-pin SOIC package provides a compact surface-mount format suitable for mainstream consumer-electronics boards. The verified product information specifically identifies the part as a set-top clock source, clock generator, PLL, and frequency synthesizer, supporting its use in designs requiring coordinated timing from one reference source.
Its architecture centers on a 27 MHz crystal or clock reference. This reference can be multiplied or divided through the PLL to obtain the clock signals required by system functions. Exact output-frequency settings, loop bandwidth, output jitter, supply-voltage range, operating-temperature limits, and configuration details are not present in the supplied verified records and must therefore be confirmed against the manufacturer datasheet before schematic release or firmware programming.
Typical applications include digital set-top boxes, cable receivers, television front ends, multimedia terminals, and other consumer equipment that requires multiple coordinated clocks. The MK2761ASLF is most appropriate when the board already uses a 27 MHz reference and expects an analog-PLL clock-source solution. Its advantage is consolidation of multiple timing requirements into one dedicated IC rather than relying exclusively on discrete oscillators or separate frequency-generation blocks.
Designers should verify all available output frequencies, pin-level enable functions, crystal-load requirements, PLL configuration method, supply sequencing, and output-drive characteristics in the manufacturer datasheet. PCB planning should reserve the exact 16-pin SOIC footprint, provide a short and clean reference path, and follow the recommended grounding and decoupling arrangement. Software or hardware control of the synthesized clocks should also be confirmed before assuming that every output can be independently programmed.
This product data consolidates verified distributor classification, package information, pricing availability, and the known 27 MHz analog-PLL architecture. It also identifies the specific datasheet, pinout, lifecycle, compliance, and substitute information that still requires confirmation, helping engineers distinguish documented facts from values that remain unverified.
Аналоги без доработки для MK2761ASLF — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Для этого товара нет аналогов без доработки.
Запросить аналогиMK2761ASLF Характеристики
| Product Type | Clock/frequency synthesizer IC |
| Clock Source Architecture | Analog phase-locked loop (PLL) |
| Reference Input Frequency | 27 MHz crystal or clock input |
| Output Architecture | Multiple output clocks |
| Primary Application | Set-top box clock source |
| Корпус | 16-pin SOIC, 150 mil narrow body |
| Package Width | 3.90 mm |
| Тип монтажа | Surface mount |
| Device Classification | Clock generator, PLL, and frequency synthesizer |
Руководство по цоколевке MK2761ASLF в корпусе 3.90 mm
Цоколевка для MK2761ASLF (корпус 3.90 mm). Нумерация выводов, функции и схемы подключения определены в техническом описании производителя. Обратитесь к нему для точного посадочного места и рекомендаций по пайке.
Нет подробных данных о распиновке для MK2761ASLF.
Обратитесь к даташиту для полной конфигурации выводов.
Типичное применение
MK2761ASLF подходит для 6 применениеs: Digital Set-Top Box Clocking, Cable Receiver Timing Network, Multimedia Terminal Reference Clock, Television Front-End Clocking, Consumer Network Media Adapter, Consumer Audio-Video Processing Platform.
Digital Set-Top Box Clocking
The MK2761ASLF fits a digital set-top box that derives several coordinated clock signals from one 27 MHz reference. Its documented set-top clock-source role, analog-PLL architecture, and multiple outputs allow timing generation to be consolidated instead of implemented with several unrelated clock blocks. The 16-pin SOIC package is also compatible with compact consumer-electronics board construction. Before schematic release, engineers should confirm the required output frequencies, PLL programming method, enable behavior, and supply limits in the manufacturer datasheet.
Рекомендуется
Cable Receiver Timing Network
A cable receiver can use the MK2761ASLF as a centralized clock source when its design already provides a 27 MHz crystal or clock and needs multiple related outputs. The analog-PLL implementation is relevant to consumer tuners that must coordinate demodulation, memory, interface, and control blocks without adding several separate synthesizers. Because the supplied records do not quantify jitter, frequency accuracy, or output count, the design must verify those values and confirm that the 16-pin SOIC pinout matches the board before release.
Рекомендуется
Multimedia Terminal Reference Clock
The MK2761ASLF is applicable to multimedia terminals that require multiple related clocks from a common 27 MHz source. Consolidating clock generation in one PLL-based IC can simplify system planning compared with separate oscillator networks, while the narrow 16-SOIC package preserves PCB area for multimedia processing and storage. Exact suitability depends on output coverage, configuration controls, startup behavior, and power requirements, none of which are specified in the verified excerpts and all of which must be checked against the manufacturer datasheet.
Рекомендуется
Television Front-End Clocking
The MK2761ASLF can support television front-end clock distribution when the tuner architecture uses a 27 MHz reference and requires multiple PLL-derived clocks. Its documented set-top focus makes it more relevant to consumer television signal-chain designs than to unrelated industrial timing systems. Engineers should verify available output frequencies, PLL lock criteria, output jitter, and reference sensitivity. The 16-pin SOIC footprint must also be checked against the schematic rather than inferred solely from the package dimensions in distributor records.
Рекомендуется
Consumer Network Media Adapter
A consumer media adapter may use the MK2761ASLF when it already operates from a 27 MHz reference and requires multiple clocks for network, storage, and multimedia subsystems. A single PLL-based source reduces the number of separate clock-generation blocks that must be evaluated, but it does not eliminate the need for careful noise and routing analysis. Follow the manufacturer reference design for crystal selection, grounding, decoupling, and PLL support components because those implementation details are not included in the supplied product records.
Рекомендуется
Consumer Audio-Video Processing Platform
The MK2761ASLF can support an audio-video processing platform that derives coordinated processing clocks from a 27 MHz reference. Multiple outputs from one analog-PLL clock source can simplify clock distribution across video processing, audio handling, memory interfaces, and control logic. The component remains a specialized set-top clock source, so engineers should confirm that every required output is available and that its frequency tolerance and jitter satisfy the multimedia design. Pin-level configuration and startup sequencing must be verified in the manufacturer datasheet.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для MK2761ASLF — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар |
|---|---|
| Package | 16-pin SOIC, 150 mil narrow body |
| Brand | Renesas Electronics |
| Product Type | Clock/frequency synthesizer IC |
| Reference Input | 27 MHz crystal or clock input |
| Clock Architecture | Analog phase-locked loop |
| Output Configuration | Multiple output clocks |
| Primary Application | Set-top box clock source |
| Package Width | 3.90 mm |
| Unit Price | Live distributor quote required as of 2026-10-30 |
Ключевые отличия
- Purpose-built set-top clock source (против Generic 16-SOIC clock generator)
- Multiple outputs from one reference (против Single-frequency oscillator)
- Compact consumer-electronics package (против Larger clock-source package)
Заметки по проектированию
Route the 27 MHz crystal or clock reference as a short, controlled-impedance path and keep it away from switching nodes and high-current return paths. Place the crystal and its specified load components close to the device according to the manufacturer reference design. The supplied records do not include the layout drawing, so trace geometry, guard construction, and ground-reference details must be taken from the datasheet rather than inferred from the SOIC package alone.
Do not select bypass capacitors or supply limits from general SOIC practice. First confirm the MK2761ASLF operating-voltage range, quiescent current, and manufacturer-recommended input and output decoupling from the official datasheet. Then connect the regulator and decoupling network so that startup transients do not disturb PLL lock. These values are not present in the verified excerpts, making power-supply and capacitor selection a datasheet-dependent design step.
A 16-pin SOIC package does not establish drop-in compatibility. Do not substitute a generic 16-SOIC clock generator based on body size alone; verify pin names, voltage domains, reference-input type, PLL configuration pins, output frequencies, and startup behavior. The supplied cross-reference search found no qualified substitute, so any redesign should begin with the manufacturer pinout and electrical tables for the MK2761ASLF.
Информация о соответствии
The supplied verified records do not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals compliance. These values must be confirmed from the current Renesas product documentation and the applicable orderable-part declarations.
