ICS503MT - LOCO PLL Clock Multiplier | Renesas | 8-SOIC
部品番号: ICS503MT ✗ 生産終了ICS503MT 概要
A PLL clock multiplier is a timing semiconductor that uses phase-locked-loop technology to derive a stable output clock from a lower-frequency reference. This type of device belongs to the clock and timing IC hierarchy, alongside clock generators, frequency synthesizers, PLL-based multipliers, and other timing-control components. The ICS503MT is intended for systems that require a controlled clock relationship between an input reference and a multiplied output.
The ICS503MT accepts either a crystal or clock input and produces a CMOS clock output. Its 8-SOIC package supports surface-mount assembly, while the listed reel packaging is suitable for automated production handling. The 3 V to 5.5 V operating-supply range allows use in conventional 3.3 V and 5 V digital systems when the downstream clock requirements match the device specifications.
The device is identified as obsolete or end-of-life in the product information, so new designs should confirm lifecycle status and sourcing requirements before committing the ICS503MT to a production BOM. For an existing design, engineers should review the manufacturer datasheet for the exact multiplier ratios, crystal recommendations, output characteristics, timing limits, electrical limits, and package drawings before modifying the circuit.
Typical uses for this device include legacy digital equipment, embedded control systems, communications equipment, and other clocked electronics that already have a validated ICS503MT board layout. The primary design consideration is preserving the original footprint and reference-source configuration; changing crystal frequency, load capacitance, supply voltage, or output loading can alter timing behavior.
This page combines the listed package, electrical, environmental, lifecycle, and application characteristics with practical guidance for legacy-clock restoration and replacement assessment. It also distinguishes verified device facts from parameters that require confirmation in the manufacturer datasheet.
ドロップイン代替品: ICS503MT — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
この製品に利用可能なドロップイン代替品はありません。
代替品をリクエストICS503MT 仕様
| Product Type | LOCO PLL clock multiplier |
| Device Category | Clock generator, PLL, frequency synthesizer |
| Input Type | Clock or crystal input |
| 出力タイプ | CMOS |
| Number of Circuits | 1 |
| Operating Supply Voltage Range | 3 V to 5.5 V |
| 動作温度範囲 | 0 °C to 70 °C |
| パッケージ | 8-SOIC |
| Package Width | 0.154 in (3.90 mm) |
| 実装タイプ | SMD (SMT) |
| Manufacturing Packaging | Tape and reel |
| ライフサイクル状態 | Obsolete (EOL) |
ICS503MT ピン構成
| ピン 1 | [DATA_NEEDED: pin 1 name] — Consult the manufacturer datasheet pin-description table. |
| ピン 2 | [DATA_NEEDED: pin 2 name] — Consult the manufacturer datasheet pin-description table. |
| ピン 3 | [DATA_NEEDED: pin 3 name] — Consult the manufacturer datasheet pin-description table. |
| ピン 4 | [DATA_NEEDED: pin 4 name] — Consult the manufacturer datasheet pin-description table. |
| ピン 5 | [DATA_NEEDED: pin 5 name] — Consult the manufacturer datasheet pin-description table. |
| ピン 6 | [DATA_NEEDED: pin 6 name] — Consult the manufacturer datasheet pin-description table. |
| ピン 7 | [DATA_NEEDED: pin 7 name] — Consult the manufacturer datasheet pin-description table. |
| ピン 8 | [DATA_NEEDED: pin 8 name] — Consult the manufacturer datasheet pin-description table. |
主な用途
ICS503MT の用途: 6 件s: Legacy Industrial Control Systems, Communications Equipment Clocking, Data Acquisition and Control, Test and Measurement Instruments, Legacy Audio Processing Equipment, Obsolete Equipment Spare Parts.
Legacy Industrial Control Systems
The ICS503MT is appropriate for maintaining a legacy industrial controller whose clock-generation circuit already uses an 8-SOIC LOCO PLL multiplier. Its clock or crystal input allows the original reference source to remain central to the design, while the CMOS output supports established digital logic. Because the device operates from 3 V to 5.5 V and is specified for 0 °C to 70 °C, engineers should first confirm that the enclosure temperature and rail voltage remain within those limits. Repair work should preserve the crystal frequency, load network, board layout, and output loading to maintain the timing behavior of the validated original assembly.
おすすめ
Communications Equipment Clocking
ICS503MT can be retained in communications equipment that derives a system clock through a PLL multiplier referenced to a crystal or external clock. The input flexibility is useful when restoring older radio, network-interface, or data-processing equipment, while the CMOS output is compatible with systems designed around this clock family. The design must remain inside the listed 3 V to 5.5 V supply range and 0 °C to 70 °C temperature range. Before replacing the device with a modern programmable clock generator, verify output frequency, duty cycle, jitter, edge timing, supply sequencing, and all pin connections against the original manufacturer documentation.
おすすめ
Data Acquisition and Control
The ICS503MT can support the clocking requirements of a legacy data-acquisition or embedded-control board that uses a multiplied reference for digital conversion, processing, or storage control. The 8-SOIC footprint makes it practical for repair of existing populated assemblies, and the choice of crystal or clock input allows the original source architecture to remain intact. Because the part is obsolete, engineers should treat it as a maintenance selection rather than a default for new instrumentation. Validate the reference frequency, multiplier relationship, CMOS output levels, supply tolerance, and thermal conditions before approving its use in a safety- or measurement-critical system.
おすすめ
Test and Measurement Instruments
ICS503MT is suitable for maintaining an older test or measurement instrument whose internal timing network depends on the LOCO PLL multiplier architecture. Keeping the original clock device can reduce uncertainty when the surrounding board layout and calibration process are already established. The device’s listed 8-SOIC package, CMOS output, and 3 V to 5.5 V supply range simplify continuity with the original assembly. However, obsolete components can introduce obsolescence risk into calibration equipment that must remain supported for many years. Record the crystal specification, test the lock behavior, and maintain controlled spares or evaluate a fully qualified modern clock generator.
おすすめ
Legacy Audio Processing Equipment
ICS503MT can be retained in legacy audio-processing equipment that requires a multiplied CMOS clock derived from a crystal or clock source. This application is most relevant to repair or continuity of previously released products rather than new audio-system design. The device’s 3 V to 5.5 V operating range can align with established mixed-signal rails, while its 8-SOIC package supports board-level replacement. Engineers must confirm that the clock remains synchronized with the audio converter and processing circuitry, paying particular attention to the crystal, load capacitance, clock jitter, output duty cycle, and decoupling layout documented for the original design.
おすすめ
Obsolete Equipment Spare Parts
ICS503MT is useful as a controlled spare for production lines, industrial machinery, or field-service inventories supporting equipment built around the LOCO clock family. The listed tape-and-reel format supports normal automated handling, while the compact 8-SOIC package fits the original board footprint. Procurement should specify the exact MPN, package, condition, quantity, and any required traceability because an obsolete designation does not guarantee inventory continuity. Before using stock for critical repairs, inspect the device, verify solderability, and confirm that the operating temperature, supply voltage, and clock configuration match the host equipment.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: ICS503MT — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 |
|---|---|
| Package | 8-SOIC |
| Brand | Renesas Electronics |
| Product Type | LOCO PLL clock multiplier |
| Input Type | Clock or crystal input |
| Output Type | CMOS |
| Operating Supply Voltage | 3 V to 5.5 V |
| Operating Temperature | 0 °C to 70 °C |
| Number of Circuits | 1 |
| Mounting Type | SMD (SMT) |
| Lifecycle Status | Obsolete (EOL) |
主な差別化要因
- Original LOCO PLL clock-multiplier architecture （vs Modern programmable clock generator)
- Compact 8-SOIC package （vs Larger-package PLL clock generator)
- Wide legacy supply-voltage range （vs Modern fixed-voltage clock IC)
設計ノート
Do not treat a generic 8-SOIC footprint as sufficient evidence of replaceability. Before substituting a clock device, compare every pin function, the crystal or clock-input topology, supply range, multiplier relationship, output logic level, frequency limits, and timing requirements. A mechanically similar part can create a clock that appears stable while failing jitter, duty-cycle, lock-time, or system-sequencing requirements during production.
Preserve the original reference-clock layout when repairing an ICS503MT board. Keep the crystal and its load-capacitance network close to the device, maintain short return paths, and avoid routing the reference clock next to noisy switching nodes. Confirm the manufacturer’s recommended decoupling and grounding arrangement, because changes to crystal loading or clock-trace topology can affect oscillation and timing accuracy.
Use the listed 0 °C to 70 °C operating range as a hard design boundary for this device. For maintenance applications, measure the temperature at the IC in the fully assembled enclosure and include startup, adjacent-circuit dissipation, and worst-case ambient conditions. If the enclosure can exceed 70 °C, select a part with an appropriate temperature rating instead of relying on the host enclosure’s nominal temperature.
Validate the power rail at the IC pins for a 3 V to 5.5 V operating environment. Follow the manufacturer’s bypass-capacitor recommendations and ensure that upstream converters can start and remain within tolerance before the clock circuit begins operating. For obsolete-device repair, also verify solderability and contact reliability because aged inventory can create intermittent supply or ground faults that resemble a clock-generator failure.
コンプライアンス情報
No definitive RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations were present in the product information. The ICS503MT is listed as obsolete (EOL).
