ICS553MI - 1:4 200 MHz Clock Buffer | Renesas Electronics
부품 번호: ICS553MI ✓ 활성ICS553MI 개요
A clock fanout buffer is a clock-management IC that receives one periodic signal and distributes multiple synchronized copies to several destinations. The ICS553MI belongs to the fanout buffer subclass of clock and timing ICs, within the broader clock-buffer, clock-driver, and clock-management semiconductor hierarchy. Its 1:4 fanout ratio makes it suitable where one source must feed four loads without redesigning the clock tree.
The primary verified specifications are a 1:4 fanout ratio, 200 MHz maximum frequency, CMOS input and output interfaces, and a 2.375 V minimum operating supply voltage with a 5.25 V maximum. The 8-SOIC package supports conventional surface-mount assembly while providing four buffered outputs. These details distinguish it from single-output clock devices, lower-frequency buffers, and devices requiring more than four outputs.
The low-skew architecture is intended to minimize output-to-output timing displacement, making the device relevant to synchronous systems in which downstream circuits require closely related clock edges. Exact propagation delay, output-to-output skew, rise time, fall time, output impedance, and input pulse-width limits are not present in the supplied verified data and should be taken from the manufacturer datasheet before timing closure.
Typical uses include processor and FPGA clock distribution, communications-interface clock fanout, data-converter clocking, memory-interface timing, and general-purpose digital clock-tree branching. In each case, the single input can feed four destinations while the 200 MHz operating limit defines the upper frequency envelope. The CMOS interfaces also allow the device to operate across a 2.375 V to 5.25 V supply range, subject to the input and output voltage limits in the datasheet.
The principal design consideration is timing verification. Engineers should check the worst-case input-to-output and output-to-output skew across process, voltage, and temperature, rather than relying only on the 200 MHz headline frequency. Supply decoupling, input slew rate, trace loading, and the number of clock destinations also require review because they affect edge quality and timing margin.
This page consolidates the verified manufacturer and distributor information, distinguishes confirmed specifications from unavailable data, and documents practical clock-tree considerations. It also explains the absence of verified drop-in substitutes so engineers can avoid assuming that a shared package or similar frequency rating guarantees pin-to-pin compatibility.
드롭인 대체품: ICS553MI — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 제품에는 사용 가능한 드롭인 대체품이 없습니다.
대체품 요청ICS553MI 사양
| Product Type | Clock fanout buffer (distribution) |
| Fanout Ratio | 1:4 |
| Maximum Frequency | 200 MHz |
| Input Interface | CMOS |
| Output Interface | CMOS |
| 동작 공급 전압 | 2.375 V to 5.25 V |
| 출력 수 | 4 outputs |
| 패키지 | 8-SOIC, 0.154 inch (3.90 mm) width |
| 실장 유형 | Surface mount |
| Device Family | ICS ClockBlocks |
ICS553MI 8-soic, 0.154 inch (3.90 mm) width 핀 구성 가이드
ICS553MI(8-soic, 0.154 inch (3.90 mm) width 패키지)의 핀 구성입니다. 핀 번호, 기능, 연결 다이어그램은 제조사 데이터시트에 정의되어 있습니다. 정확한 풋프린트와 솔더링 지침은 해당 문서를 참조하십시오.
다음에 대한 상세 핀아웃 데이터 없음: ICS553MI.
다음을 참조하십시오: 데이터시트 전체 핀 구성은 다음을 참조하십시오.
일반적인 애플리케이션
ICS553MI 적합 용도: 6 애플리케이션s: Processor and FPGA Clock Distribution, Communications Interface Clock Fanout, Data Converter Sampling Clock, Industrial Control Logic Clocking, Memory and Interface Clock Branching, General Digital Clock-Tree Branching.
Processor and FPGA Clock Distribution
The ICS553MI fits clock branching designs that feed one processor, FPGA, or digital controller from a common source and then distribute that clock to four receiving circuits. Its 1:4 fanout ratio provides four dedicated outputs, while the 200 MHz maximum frequency covers many communications, control, and data-processing clock trees. The CMOS interfaces suit conventional digital signaling, and the 2.375 V to 5.25 V supply range provides flexibility across common rails. Before implementation, verify the receiving devices’ input thresholds, maximum input frequency, and required setup-and-hold margin, because the verified information does not include the device’s complete propagation-delay and skew tables.
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Communications Interface Clock Fanout
The ICS553MI can distribute one communications clock to four interface or transceiver clock domains when those destinations need closely related edges. Its low-skew design description and 1:4 fanout make it relevant to parallel data converters, network interfaces, and digital communication blocks operating up to 200 MHz. The device can operate from 2.375 V to 5.25 V, allowing rail selection according to the surrounding logic. Engineers should still inspect the exact output-to-output skew, rise and fall times, and loading limits in the manufacturer datasheet, and should confirm that all four outputs meet the receiver’s input-slew requirement on the assembled PCB.
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Data Converter Sampling Clock
The ICS553MI can serve as a one-input, four-output sampling-clock distributor when an ADC, DAC, or data-converter subsystem requires the same clock edge at several conversion blocks. Using a 1:4 fanout buffer isolates the source from multiple load paths and provides four branch points at frequencies up to 200 MHz. The CMOS input and outputs align with ordinary digital logic, while the 2.375 V to 5.25 V operating range supports multiple rail combinations. The design must account for converter aperture requirements, clock-jitter contribution, trace impedance, and capacitive loading; exact propagation delay and jitter values are not present in the supplied verified data.
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Industrial Control Logic Clocking
The ICS553MI is applicable to industrial control boards where a single oscillator or controller output must reach four timing domains. A 1:4 buffer provides separate routing paths that can be matched more effectively than a heavily loaded point-to-point clock net, and the 200 MHz ceiling gives sufficient margin for many digital control, counter, and peripheral subsystems. Its 2.375 V to 5.25 V supply range permits use with common industrial logic levels. Because industrial products may impose extended-temperature requirements, confirm the ordering code and operating-temperature specification rather than assuming the standard ICS553MI grade is suitable for every environment.
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Memory and Interface Clock Branching
The ICS553MI can branch a system clock among memory controllers, parallel I/O devices, and peripheral interface logic where four independently routed clock outputs are useful. Operating up to 200 MHz, the device provides enough range for many legacy and industrial bus interfaces while limiting fanout to four destinations. The CMOS output interface supports ordinary digital loads, and the broad 2.375 V to 5.25 V supply range allows rail planning across multiple system domains. Designers should compare input capacitance, output rise and fall times, trace length, and termination requirements, because frequency alone does not guarantee acceptable signal integrity or timing margin at the receiver.
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General Digital Clock-Tree Branching
The ICS553MI provides a straightforward way to turn one periodic source into four CMOS clock branches for counters, state machines, communication framing logic, and mixed digital subsystems. Its 1:4 ratio and 200 MHz maximum frequency make it useful where several destinations need a common reference without directly loading the oscillator or controller output. The low-skew product description is particularly relevant when relative edge placement influences downstream behavior. A practical implementation should include short return paths, continuous supply and ground planes, local decoupling, and source-series damping if edge rates produce ringing. Timing performance must be validated from the datasheet and measured at the relevant supply and temperature corners.
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추천 제품 요약
엔지니어링 참조 데이터: ICS553MI — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 |
|---|---|
| Package | 8-SOIC, 0.154 inch (3.90 mm) width |
| Brand | Renesas Electronics |
| Fanout Ratio | 1:4 |
| Maximum Frequency | 200 MHz |
| Operating Supply Voltage | 2.375 V to 5.25 V |
| Input Interface | CMOS |
| Output Interface | CMOS |
| Number of Outputs | 4 outputs |
| Mounting Type | Surface mount |
주요 차별점
- Verified 200 MHz operating ceiling (vs ICS551M)
- Four-output clock distribution (vs ICS542M)
- Defined low-skew ICS ClockBlocks positioning (vs ICS552-02)
설계 노트
Treat the 200 MHz rating as a ceiling rather than a guarantee of usable timing margin. Review propagation delay, output-to-output skew, rise and fall times, input slew requirements, and output drive from the official datasheet. Keep clock traces short, provide a continuous return plane, match branch lengths where relative edge position matters, and probe the delivered waveform at the receiving pins. PCB parasitics and receiver loading can degrade an otherwise acceptable datasheet clock.
Place the IC near the clock source and the first loads to minimize trace length and sensitivity to board capacitance. Route all four outputs as controlled-impedance clock nets, avoid crossing noisy power or switching-node regions, and use a solid ground plane beneath the device. Because exact decoupling and output-drive values were not supplied in the verified data, follow the manufacturer’s recommended application circuit and capacitor values rather than substituting generic values.
Do not infer drop-in compatibility from a shared SOIC body size or similar frequency rating. A replacement must also match pin assignments, power pins, input and output logic levels, enable or control behavior, fanout ratio, and timing limits. In particular, ICS553MI, ICS551M, and ICS542M cannot be treated as equivalents without reviewing their individual datasheets. A PCB respin may be safer than assuming a drop-in part when pinout evidence is unavailable.
The verified operating range is 2.375 V to 5.25 V, but the complete power architecture still needs verification. Confirm input and output voltage limits, supply-current behavior, and local decoupling recommendations in the official datasheet. Place the decoupling capacitor adjacent to the supply and ground pins, provide adequate via access, and avoid creating return current paths through switching-power regions. If several clock loads are active simultaneously, include their contribution when checking the upstream regulator budget.
규정 준수 정보
The supplied verified snippets identify the manufacturer, product type, fanout ratio, maximum frequency, supply range, interfaces, and package, but they do not provide explicit environmental or material-compliance declarations.
