ICS514MT - 140MHz Loco PLL Clock Generator | Renesas
Артикул: ICS514MT ✓ АктивенICS514MT Обзор
A PLL clock generator is a timing integrated circuit that multiplies, divides, or conditions an input clock to produce one or more stable output frequencies. In the broader semiconductor hierarchy, the ICS514MT belongs to the clock and timing IC family, where PLLs are used alongside oscillators, dividers, buffers, and clock trees to distribute timing signals throughout electronic systems. Its LOCO architecture is intended to provide an economical frequency-generation solution from a common crystal reference.
The ICS514MT accepts a clock or crystal input and produces a CMOS clock output. Its maximum frequency is 140 MHz, and its input-to-output ratio is listed as 1:2. The PLL and bypass functions give designers the option to retain a direct source-clock path or use phase-locked synthesis. These features are useful where a system needs more than one frequency domain but only a small number of clocks.
The single-circuit architecture keeps the design focused on one principal clock-generation function. A crystal-based implementation can use the specified 14.31818 MHz reference, while an external clock input offers flexibility when another oscillator already provides a suitable reference. Because the output technology is CMOS, the device is intended to interface with digital logic operating at compatible voltage levels, subject to the operating limits and supply requirements defined in the manufacturer datasheet.
Typical uses include communications equipment, digital signal-processing systems, embedded-control platforms, frequency-sensitive test equipment, and general-purpose digital subsystems. In a communications design, the part can create a stable high-frequency operating clock for a synthesizer, controller, or data-conversion chain. In test equipment, it can provide a repeatable reference for timing-sensitive measurement or processing sections.
PCB implementation should preserve short clock paths and suitable return paths to minimize susceptibility to noise and crosstalk. Place the crystal, input circuitry, decoupling capacitors, and output load close to the device where the layout guidance permits. Check the bypass-mode state before system startup so that the intended clock path is established consistently.
This product overview combines the ICS514MT device classification, operating limits, package information, drop-in replacement evidence, and application guidance into one engineering reference. It also identifies design checks that are important beyond the basic 140 MHz headline specification, including PLL bypass behavior, source selection, clock routing, and package-level decoupling.
Аналоги без доработки для ICS514MT — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
514MLFT
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
ICS514MT Характеристики
| Product Type | LOCO PLL clock generator |
| Maximum Frequency | 140 MHz |
| Reference Input Type | Clock or crystal |
| Crystal Reference Frequency | 14.31818 MHz |
| Тип выхода | CMOS |
| PLL | Yes, with bypass |
| Number of Circuits | 1 circuit |
| Input-to-Output Ratio | 1:2 |
| Корпус | 8-SOIC, 0.154 inch (3.90 mm) width |
| Тип монтажа | Surface mount |
| Статус RoHS | Non-compliant |
| Manufacturer | Renesas Electronics |
Руководство по цоколевке ICS514MT в корпусе 8-soic, 0.154 inch (3.90 mm) width
Цоколевка для ICS514MT (корпус 8-soic, 0.154 inch (3.90 mm) width). 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 ICS514MT.
Обратитесь к даташиту для полной конфигурации выводов.
Типичное применение
ICS514MT подходит для 6 применениеs: Communications Module Clocking, Digital Signal Processing, Embedded Control Systems, Test and Measurement Equipment, Frequency Conversion Front Ends, Industrial Digital Control.
Communications Module Clocking
The ICS514MT fits communications modules that require a stable CMOS clock from a 14.31818 MHz crystal or external source. Its PLL supports frequency multiplication while the bypass path provides flexibility during startup, testing, or source-clock transitions. The documented maximum frequency of 140 MHz makes it relevant to digital signal chains operating below that limit. Designers should verify output jitter, supply sensitivity, and load behavior against the manufacturer timing data before assigning the clock to a modulation, framing, or baseband path.
Digital Signal Processing
The ICS514MT can supply a dedicated reference clock to DSP pipelines requiring a single high-quality CMOS waveform. A crystal-based implementation centralizes frequency generation, while PLL bypass supports a direct-source test or fallback mode. Because the device includes one clock circuit and a listed 1:2 input-to-output ratio, the system architecture should confirm how the requested frequency maps to the input configuration. Timing-budget analysis must include device jitter, skew, clock-tree delay, and downstream converter requirements.
Embedded Control Systems
The ICS514MT is appropriate for embedded controllers and digital subsystems that need a local clock generated from a common crystal reference rather than a board-wide oscillator arrangement. Its CMOS output suits digital logic, and the bypass feature simplifies controlled startup or diagnostic configurations. Implementation should keep the oscillator loop compact and route the output away from switching currents. Confirm whether the controller tolerates the selected reference, multiplication ratio, startup time, and jitter before finalizing the clock tree.
Test and Measurement Equipment
The ICS514MT can generate a repeatable clock for timing-sensitive test, measurement, and data-acquisition equipment. Its maximum frequency of 140 MHz supports digital processing chains that operate below the device limit, while the PLL bypass path enables comparison between synthesized and source-clock conditions. For instrumentation, validate long-term frequency stability, phase noise or jitter, output rise and fall times, and load-dependent behavior using the manufacturer characterization data. Short, controlled routing helps preserve measurement integrity.
Frequency Conversion Front Ends
The ICS514MT is useful in frequency-conversion front ends where a synthesizer, converter, or digital processing block requires a stable local clock. A 14.31818 MHz crystal can provide the reference while the PLL creates a higher-frequency operating clock, and bypass offers a path for calibration or test. Engineers should check input and output timing specifications, PLL lock requirements, and allowed output-duty-cycle variation. Crystal component selection should follow the manufacturer's loading and drive recommendations.
Industrial Digital Control
The ICS514MT supports industrial digital-control assemblies that require a deterministic clock distributed to processors, logic, and data-conversion circuits. A single local clock source reduces dependence on an external oscillator, while the bypass function can assist controlled initialization and diagnostics. The device's 8-SOIC package supports conventional surface-mount assembly, but industrial suitability also depends on the exact temperature grade, supply range, lifecycle status, and current compliance documentation. Verify those requirements before production release.
Справочные инженерные данные для ICS514MT — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | 514MLFT |
|---|---|---|
| Brand | Renesas Electronics | Renesas Electronics |
| Package | 8-SOIC (0.154 inch, 3.90 mm width) | 8-SOIC - same package |
| Product Type | LOCO PLL clock generator | PLL clock generator |
Ключевые отличия
- Documented clock-generation role and reference architecture (против 514MLFT)
- Same-package replacement path (против 514MLFT)
- Direct PLL bypass capability (против 514MLFT)
Заметки по проектированию
Place the ICS514MT, crystal, oscillator-load components, and local supply-decoupling capacitors close together to minimize loop area and sensitivity to board noise. Keep the PLL clock route short and continuous, avoid crossing split ground planes, and provide a solid ground reference beneath the 8-SOIC footprint. Where the manufacturer specifies a test point or component orientation, retain that layout because moving the crystal network can change startup margin and clock stability.
Treat the ICS514MT output as a high-speed clock even when the system clock is much slower. Route it away from switching-power nodes and noisy digital buses, use a short path with minimal stubs, and preserve a continuous return path. If the CMOS clock is distributed beyond the local circuit, use source-series termination or an appropriate clock-tree solution selected from output rise time, load capacitance, and downstream timing requirements.
Do not select the crystal network or assume PLL-bypass polarity without checking the manufacturer guidance. Confirm startup time, crystal ESR and load capacitance, nominal frequency accuracy, supply voltage, and output load. Also verify that software or control logic cannot leave the PLL in an unintended state during reset. A fit-for-purpose replacement must be checked against these details rather than package appearance alone.
Информация о соответствии
The component-status listing identifies the ICS514MT as RoHS non-compliant. AEC-Q100 qualification, REACH status, lead-free status, halogen-free status, and conflict-minerals status are not established.