ICS501GI - 140MHz PLL Clock Generator | Renesas Electronics
N.º da peça: ICS501GI ✓ AtivoICS501GI Visão geral
A PLL clock generator is a timing IC that multiplies or otherwise conditions a reference clock to produce one or more higher-frequency outputs. Clock generators belong to the broader clock and timing IC hierarchy, where they work alongside oscillators, dividers, buffers, phase-locked loops, and frequency synthesizers. Their primary function is to convert a convenient low-frequency crystal reference into the clock domain required by processors, communication circuits, converters, and digital peripherals.
The ICS501GI uses a phase-locked loop, allowing an external clock or crystal to serve as the reference while the internal multiplier generates a higher-frequency CMOS clock. Its maximum listed operating frequency is 140 MHz. The device contains one clock-generation circuit and has a listed input-to-output ratio of 1:1 in the referenced specification summary. These characteristics make it suitable for designs requiring a compact, single-channel clock source rather than a programmable multi-output synthesizer.
Renesas markets the ICS501 family under the LOCO name, describing it as a cost-effective method for generating a high-quality, high-frequency clock from a lower-frequency crystal or clock input. The CMOS output interface suits digital systems operating with CMOS-compatible logic levels. Because this ICS501GI variant is offered in a compact 8-pin TSSOP/MSOP package, it can support space-conscious boards while retaining separate connections for power, ground, reference input, and clock output.
Typical uses include digital control systems, embedded processing modules, communications equipment, clock distribution for digital logic, and clock generation where a system already has a suitable reference crystal or external clock. The PLL-based approach can reduce the need for high-frequency external crystals while providing a clock output up to 140 MHz. System designers must still confirm loop stability, output jitter, startup behavior, load capacitance, and supply requirements against the manufacturer datasheet before releasing a production design.
Layout should keep the reference-crystal or clock-input path short and route the high-speed CMOS output away from sensitive analog and communication nodes. Follow the manufacturer’s recommended input, output, and bypass-capacitor connections, and account for the required ground-return path under the exposed or connected ground pins. If frequency accuracy, jitter, or reference sensitivity is critical, evaluate the complete clock tree rather than relying only on the 140 MHz maximum-frequency headline figure.
This page combines the Renesas family identification, distributor package details, PLL and frequency specifications, pin-compatible cross-reference findings, and practical selection guidance. It also distinguishes verified drop-in candidates from generic cross-reference tools, helping engineers focus on same-package replacements that still require datasheet-level timing and application validation.
Alternativas drop-in para ICS501GI — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com ICS501GI (mesmo formato e footprint) — diferindo em Maximum Frequency, Number of Circuits, Package.
ICS501GT
✅ Drop-InConsulte o preço
Ver ficha técnica →501GILF
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
ICS501GI Especificações
| Product Type | PLL clock generator |
| Maximum Frequency | 140 MHz |
| Number of Circuits | 1 circuit |
| PLL | Yes |
| Input Types | Clock or crystal |
| Tipo de saída | CMOS |
| Input-to-Output Ratio | 1:1 |
| Differential Input | No |
| Differential Output | No |
| Encapsulamento | 8-TSSOP, 8-MSOP (0.118 in, 3.00 mm width) |
| Contagem de pinos | 8 pins |
| Tipo de montagem | Surface mount |
| Status RoHS | unknown |
| REACH Status | unknown |
| AEC-Q100 Qualification | unknown |
Guia de Configuração de Pinos do ICS501GI 8-tssop, 8-msop (0.118 in, 3.00 mm width)
Configuração de pinos para ICS501GI (pacote 8-tssop, 8-msop (0.118 in, 3.00 mm width)). A numeração dos pinos, funções e diagramas de conexão estão definidos no datasheet do fabricante. Consulte-o para o footprint exato e diretrizes de soldagem.
Nenhum dado detalhado de pinagem disponível para ICS501GI.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
ICS501GI é adequado para 6 aplicaçãos: Embedded Digital Control Systems, Communications Module Clocking, Programmable Logic Clock Supply, Industrial Data Acquisition, Consumer Electronics Timing, Clock Distribution and Fan-Out.
Embedded Digital Control Systems
The ICS501GI fits embedded control boards that need a single high-frequency CMOS clock derived from a lower-frequency crystal or external reference. Its PLL-based architecture supports operation up to 140 MHz while the eight-pin TSSOP/MSOP package preserves board area. The device can provide the clock required by a digital controller, programmable logic, or serial interface without relying on a separate high-frequency crystal oscillator. Before release, verify reference amplitude, output-load capability, jitter, and startup behavior in the manufacturer application circuit.
Recomendado
Communications Module Clocking
The ICS501GI can generate a CMOS clock up to 140 MHz for communications modules that receive a lower-frequency crystal or external reference. This arrangement helps consolidate clock generation into a compact timing IC and provides a single-channel output for digital logic or interface circuitry. In communications equipment, clock-edge quality and jitter are as important as maximum frequency, so the clock tree should be evaluated across its full operating range and against the interface timing budget before production release.
Recomendado
Programmable Logic Clock Supply
The ICS501GI is suitable for supplying a single CMOS clock to programmable logic or other digital subsystems that need a clock above the frequency of the board’s convenient reference oscillator. The PLL-based ICS501 family is positioned for economical multiplication of a lower-frequency source, and the listed maximum frequency of 140 MHz covers common control and interface clock domains. The design should use the manufacturer’s recommended decoupling and reference network, with special attention to output jitter and deterministic edge behavior.
Recomendado
Industrial Data Acquisition
An ICS501GI can establish a common clock reference for an industrial data-acquisition board containing mixed digital control and data-conversion circuitry. Its 140 MHz maximum frequency and CMOS output allow it to serve a single high-speed digital domain while preserving a small package footprint. Because measurement accuracy can be affected by clock jitter, power-supply noise, and coupling, the reference source, output route, and ground return should be isolated appropriately and validated with the complete acquisition chain.
Recomendado
Consumer Electronics Timing
The ICS501GI can support compact consumer products that require a stable digital clock generated from a crystal or external clock source. Its eight-pin TSSOP/MSOP package is practical for space-constrained boards, and the CMOS output aligns with common digital logic families. Designers should account for startup time, supply sequencing, output loading, and electromagnetic radiation from the clock trace. If the product needs multiple unrelated frequencies, a programmable multi-output timing device may be a better architecture than a single-channel generator.
Recomendado
Clock Distribution and Fan-Out
The ICS501GI can serve as the first stage in a clock tree, converting a reference crystal or external clock into a CMOS signal that is subsequently buffered and distributed. Its single output channel keeps the design simple when the system requires one common frequency. The high-speed output should be routed over a controlled-impedance path where applicable, with termination or series damping selected according to load capacitance and edge rate. Confirm source current, rise time, and jitter before adding downstream buffers.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para ICS501GI — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | ICS501GT | 501GILF |
|---|---|---|---|
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics |
| Package | 8-TSSOP, 8-MSOP (0.118 in, 3.00 mm width) | 8-TSSOP, 8-MSOP (0.118 in, 3.00 mm width) | 8-TSSOP, 8-MSOP (0.118 in, 3.00 mm width) |
| Product Type | PLL clock generator | PLL clock multiplier | PLL clock multiplier |
| PLL | Yes | Yes | Yes |
| Input Type | Clock or crystal | Clock or crystal | Clock or crystal |
| Output Type | CMOS | CMOS | CMOS |
Principais diferenciais
- Direct 140 MHz Renesas clock-generation capability (vs ICS501GT)
- Single-channel PLL clock source in a compact eight-pin package (vs 501GILF)
Notas de projeto
Route the reference crystal or external clock connection using the manufacturer’s recommended topology and keep the reference path short and away from high-energy switching nodes. Place the input-network components close to the device and provide the specified ground return. Because the clock output can reach 140 MHz, PCB trace geometry, loading, and return-path continuity can affect edge quality and clock accuracy even when the nominal frequency is correct.
Treat the CMOS clock output as a high-speed signal. Confirm output rise and fall times, output current capability, load capacitance, jitter, and trace-impedance requirements in the datasheet. Use the shortest practical route to the first receiver or buffer, avoid unnecessary stubs, and evaluate whether series damping is required to control ringing. Validate the finished board with an oscilloscope because a nominal 140 MHz clock can still exhibit excessive edge distortion at a heavily capacitive load.
Do not select a replacement solely from the package outline. Confirm that the reference input is compatible with the crystal or external-clock scheme used on the PCB, and compare supply voltage, enable behavior, output-drive strength, frequency limits, and startup timing. The identified same-family candidates have consistent package and terminal claims, but each still requires application-level review before being treated as an unqualified drop-in replacement.
Informações de conformidade
No explicit RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals statements appear in the available product information.
