ICS409M - 80MHz PC Peripheral Clock | Renesas Electronics
Артикул: ICS409M ✗ Снят с производства| Кол-во | Цена за ед. | Итого |
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| 1 | $0 | $0,00 |
| 10 | $0 | $0,00 |
| 100 | $0 | $0,00 |
| 500 | $0 | $0,00 |
| 1.000 | $0 | $0,00 |
ICS409M Обзор
A clock synthesizer is a clock and timing integrated circuit that derives one or more stable output signals from a reference source. Within the hierarchy of oscillator, phase-locked loop, clock generator, timing IC, and semiconductor, the ICS409M uses an on-chip crystal oscillator and PLL to support PC peripheral clock requirements. This category is important when a system needs a defined frequency that differs from the original crystal reference.
Key verified features include PLL support, crystal input, LVCMOS output, one clock circuit, a 1:3 input-to-output ratio, and operation up to 80 MHz. The 8-pin SOIC package supports conventional surface-mount PCB assembly. Its integration can reduce the number of discrete oscillator and divider components required around a PC peripheral interface. The verified source material describes the ICS409M as a cost-effective clock synthesizer optimized for PC peripheral applications.
The device accepts a common 14.31818 MHz crystal through its on-chip crystal oscillator and uses the PLL to establish the required output relationship. This reference arrangement is relevant to legacy PC interfaces whose clock trees were designed around the widely used 14.31818 MHz frequency. The LVCMOS output is suitable for digital clock distribution when voltage levels, timing margins, and load requirements are confirmed in the original system design.
Typical uses include PC peripheral timing, interface clock generation, frequency multiplication, and replacement of discrete crystal-oscillator and divider networks. Because the available verified data does not provide complete electrical limits or timing tables, engineers should consult the manufacturer datasheet and system clock requirements before release to production.
The primary design consideration is compatibility. Confirm the crystal frequency, target output frequency, output duty cycle, supply voltage, load capacitance, and PCB footprint before substitution. A nominal 80 MHz maximum rating does not establish that every downstream timing requirement is met; system-level rise-time, jitter, and setup-and-hold margins remain decisive.
This page consolidates verified distributor and technical-source information, package and frequency details, sourcing links, and practical replacement guidance that is not presented as a single consolidated manufacturer datasheet.
Аналоги без доработки для ICS409M — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
Для этого товара нет аналогов без доработки.
Запросить аналогиICS409M Характеристики
| Product Type | Clock/Frequency Synthesizer |
| PLL | Yes |
| Input Type | Crystal |
| Тип выхода | LVCMOS |
| Maximum Frequency | 80 MHz |
| Number of Circuits | 1 |
| Input-to-Output Ratio | 1:3 |
| Crystal Oscillator | On-chip |
| Supported Crystal Frequency | 14.31818 MHz |
| Корпус | 8-pin SOIC |
| Тип монтажа | Surface Mount |
| Primary Application | PC peripheral clock generation |
Руководство по цоколевке ICS409M в корпусе 8-pin soic
Цоколевка для ICS409M (корпус 8-pin soic). 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 ICS409M.
Обратитесь к даташиту для полной конфигурации выводов.
Типичное применение
ICS409M подходит для 6 применениеs: Legacy PC Peripheral Clock, PC Interface Timing Reference, Frequency Multiplication for Digital Logic, Industrial Control and Retrofit, Communication Adapter Card, Test and Measurement Equipment.
Legacy PC Peripheral Clock
ICS409M fits a legacy PC peripheral that expects an LVCMOS clock derived from a 14.31818 MHz crystal. Its on-chip crystal oscillator and PLL allow the design to replace a discrete oscillator, divider, and buffer network with one timing IC. The verified 1:3 input-to-output ratio and 80 MHz maximum frequency make the device directly relevant to clocks near the upper end of that multiplication relationship. Before replacing the original device, confirm the eight-pin SOIC footprint, supply voltage, crystal load capacitance, output duty cycle, and timing margins at the receiving logic.
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PC Interface Timing Reference
ICS409M is suitable for supplying a deterministic reference clock to a PC interface whose original clock tree used the common 14.31818 MHz crystal. The PLL-based architecture lets the IC generate an LVCMOS output clock while reducing external timing-component count. The verified 80 MHz maximum output and 1:3 ratio are useful when matching legacy board behavior, but the output edge quality must be checked against receiver setup-and-hold requirements. A scope comparison of the original and replacement waveforms is recommended before production release.
Рекомендуется
Frequency Multiplication for Digital Logic
ICS409M can serve as a compact frequency-multiplication stage when a digital circuit requires a clock derived from 14.31818 MHz. Its verified PLL and 1:3 input-to-output ratio support a 42.95454 MHz derived frequency, while the public specification states a maximum frequency of 80 MHz. The stage is most useful in equipment designed around this established ratio rather than a freely programmable synthesizer. Preserve the original crystal and output routing to minimize changes in board behavior and clock-edge quality.
Рекомендуется
Industrial Control and Retrofit
ICS409M can support clocking in an industrial-control retrofit that retains a legacy PC peripheral card or clock-generation module. Its 8-pin SOIC package is convenient for conventional surface-mount repair, and the PLL consolidates crystal oscillation and frequency derivation into one component. Because operating-temperature and supply limits are not established in the supplied data, the part should not be assumed suitable for harsh industrial environments without manufacturer confirmation. The retrofit should also compare startup time, jitter, duty cycle, and load behavior with the failed assembly.
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Communication Adapter Card
ICS409M is relevant to a communication adapter card that needs a repeatable PC-compatible clock reference. The verified LVCMOS output can feed compatible digital logic, while the 14.31818 MHz crystal input supports integration with legacy clock trees. Component count may be reduced compared with a discrete oscillator and divider arrangement, but only an exact ICS409M footprint and functional match should be considered. Verify differential clock requirements, termination, output loading, and system timing before installing it in a multi-protocol adapter.
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Test and Measurement Equipment
ICS409M can be used in legacy test or measurement equipment that requires the same PC peripheral clock architecture. The single-circuit implementation and maximum frequency of 80 MHz make it suitable for maintaining an existing clock section rather than designing a new arbitrary-output generator. For dependable measurement results, evaluate phase noise and timing jitter against the original clock source; those parameters are not present in the supplied verified snippets. Confirm power-up sequencing and ensure the crystal remains mechanically isolated from vibration and board stress.
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Сводка рекомендуемых товаров
Справочные инженерные данные для ICS409M — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар |
|---|---|
| Brand | Renesas Electronics |
| Package | 8-pin SOIC |
| Product Type | Clock/Frequency Synthesizer |
| PLL | Yes |
| Input Type | Crystal |
| Output Type | LVCMOS |
| Maximum Frequency | 80 MHz |
| Number of Circuits | 1 |
| Input-to-Output Ratio | 1:3 |
| Crystal Oscillator | On-chip |
Ключевые отличия
- Established PC peripheral clock architecture (против Generic programmable clock generator)
- Single-circuit integration (против Discrete crystal oscillator and divider network)
- Verified operating-frequency ceiling (против Lower-frequency legacy clock source)
Заметки по проектированию
Route the crystal and oscillator-related nets as short as practical and preserve the grounding and loop geometry used by the original device. The verified evidence specifies a 14.31818 MHz crystal input but does not provide the required load capacitance or PCB layout, so do not select a crystal solely by frequency. Confirm the crystal load, drive level, startup margin, and original PCB footprint in the manufacturer documentation before replacing ICS409M.
Validate the LVCMOS clock at the far end of the board rather than only at the ICS409M output. Available verified data gives an 80 MHz maximum frequency but does not specify rise time, jitter, duty-cycle tolerance, or output-current limits. Measure edge rate and duty cycle under the worst expected load, then compare them with the receiver's setup-and-hold requirements and the original clock source.
Do not treat the 1:3 ratio and 80 MHz maximum as proof that any clock synthesizer is interchangeable. A true replacement must match the 8-pin SOIC footprint, crystal connection, PLL behavior, LVCMOS output, supply requirements, and timing performance. The supplied cross-reference search produced no verified drop-in candidate, so production substitution should wait for a manufacturer-supported or experimentally qualified equivalent.
Confirm the supply voltage, decoupling recommendations, and power-up sequence before layout because these values are not present in the verified snippets. Place required bypass capacitors according to the manufacturer datasheet and observe normal probe grounding to avoid disturbing a sensitive clock node. If the clock must remain stable during brownout or power-state transitions, test enable, startup, and supply-ramp behavior explicitly.
Информация о соответствии
The supplied verified results do not contain authoritative RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations. Current compliance documents must be obtained from the manufacturer or an authorized distributor.