MK2302S-01ILF - 168MHz PLL Zero Delay Buffer | Renesas
MPN： MK2302S-01ILF ✗ 停產MK2302S-01ILF 概覽
A zero delay buffer is a clock distribution device whose output edge is phase-aligned with the reference edge presented at its input, so the buffer adds essentially no propagation delay to the clock it regenerates. In the signal-chain hierarchy it sits below clock buffers, below clock generators, and ultimately below clock and timing ICs used for system-wide frequency management. The MK2302S-01ILF belongs to the Renesas ClockBlocks family, which was created to meet higher-speed, lower-voltage clocking requirements in modern digital systems.
Key features include a maximum operating frequency of 168 MHz, a narrow 3.15 V to 3.45 V CMOS supply range, a single non-inverted output, and 175 ps output skew, making it suitable for designs that need a small, low-power fan-out or jitter-cleaning stage near a high-speed load. The part is a surface-mount device in the 8-pin SOIC (PDSO8, 0.15 inch) package, so it drops into standard fine-pitch SOIC-8 land patterns with no exposed pad and no special thermal considerations.
Internally, the device combines proprietary analog/digital phase-locked loop techniques with a regenerative buffer stage. The PLL-based approach lets the output edge track the rising edge of the input reference clock while the buffer restores edge rate and amplitude, which is preferable to relying on a plain CMOS buffer when duty-cycle distortion and jitter have accumulated over long distribution paths.
Typical uses include CPU and SoC reference clock distribution, FPGA and ASIC clocking for networking switches, memory-interface reference clocking, and instrumentation front ends where a low-jitter, phase-aligned reference is needed at the far end of a board.
When laying out the board, keep the reference clock trace short and match the input and output trace lengths where phase alignment to a distant load matters. Remember that a ZDB removes buffer delay, not board skew, so length matching still governs arrival-time accuracy at the destination.
This page combines the electrical ratings, package data, drop-in alternatives, comparison tables, and practical layout guidance for the MK2302S-01ILF into a single engineering reference that goes beyond a distributor listing page.
直接替換替代品，適用於 MK2302S-01ILF — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： MK2302S-01ILF （相同外形與佔位） — 差異在於 Device Type, Package Width, Package.
MK2302S-01LF
✅ 直接替換聯絡詢價
查看資料表 →MK2302SI-01
✅ 直接替換📋 參考替代品（不在目錄中）
MK2302S-01
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →MK2302S-01I
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
MK2302S-01TR
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →MK2302S-01ILF 規格
| Device Type | PLL-based Clock Multiplier / Zero Delay Buffer (ZDB) |
| Series | 2302 |
| Family | ClockBlocks |
| Maximum Frequency | 168 MHz |
| Supply Voltage Range | 3.15 V to 3.45 V |
| Output Skew | 175 ps |
| Number of True Outputs | 1 |
| Logic Level / Bus Interface | CMOS |
| 封裝 | SOIC-8 (PDSO8, 0.15 inch) |
| Package Width | 3.90 mm (0.154 in) |
| 安裝類型 | Surface Mount |
| Technology | Proprietary analog/digital PLL |
| Zero Delay Feature | Output rising edge aligned with input rising edge |
| RoHS 狀態 | Compliant (RoHS code: Yes) |
| Lead-Free Status | Lead free (Pbfree code: Yes) |
MK2302S-01ILF 3.90 mm (0.154 in) 腳位配置指南
MK2302S-01ILF（3.90 mm (0.154 in) 封裝）的腳位配置。 腳位編號、功能與連接圖定義於製造商資料手冊中。請參閱該手冊以取得確切的封裝尺寸與焊接指引。
無詳細腳位定義資料： MK2302S-01ILF.
請參閱 資料表 以查看完整腳位配置。
典型應用
MK2302S-01ILF 適用於 6 應用s: Processor and SoC Reference Clock Distribution, FPGA and ASIC Clocking for Networking Equipment, Memory Interface Reference Clocking, Test and Measurement Instrumentation, Consumer and Industrial Embedded Control Boards, Communications and Serial Interface Clocking.
Processor and SoC Reference Clock Distribution
The MK2302S-01ILF is a natural fit as the local regeneration stage in front of a high-speed processor or SoC reference clock input. Driving a 100 MHz or 133 MHz system clock across a board quickly degrades edge rate and accumulates duty-cycle distortion; regenerating it with the 2302-series zero delay buffer restores a sharp edge and re-aligns the rising edge with the reference phase, so the receiver sees a clean, low-jitter clock even at the end of a long trace. The 168 MHz ceiling gives margin over both 100 MHz and 133 MHz targets. The single true output means it is typically paired with additional fan-out buffers when several loads must be served, and the 3.15 V to 3.45 V window matches standard 3.3 V core-rail generation. The SOIC-8 package places the device directly beside the processor supply and ground planes, minimising trace length on the critical clock path.
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FPGA and ASIC Clocking for Networking Equipment
In line cards and switch fabrics, a single reference clock is distributed to several FPGA or ASIC clock pins, and each branch accumulates its own skew. Placing the MK2302S-01ILF close to the destination device re-phases the clock edge against the reference, so the receiving logic samples on a clean, phase-aligned edge rather than the distorted edge delivered by a long passive trace. With 175 ps output skew, the PLL-based regeneration contributes little compared with typical board-level length mismatch, which still needs to be controlled by length matching. The 3.3 V CMOS supply window aligns with the FPGA I/O and core rails found in most networking silicon, and the SOIC-8 package is easy to place in a mixed signal-and-digital layout where a fine-pitch BGA fan-out would be awkward. A practical architecture is a low-jitter oscillator feeding a ClockBlocks generator, then one zero delay buffer per sensitive destination.
推薦
Memory Interface Reference Clocking
DDR memory subsystems demand a clean, phase-aligned clock at the memory controller and at the DRAM device, and cable-length-like trace mismatch between the two causes timing closure problems on high-speed interfaces. Using the MK2302S-01ILF to regenerate and phase-align the memory reference clock reduces the distortion introduced by the board routing, because the PLL-based zero delay buffer re-establishes a sharp edge at the far end of the trace instead of passing through a degraded waveform. The 168 MHz operating ceiling covers the reference clock rates used in single-channel DDR3 and DDR4 designs of the era this part targets. Because only one true output is provided, the common arrangement is one buffer per destination point, or one buffer feeding a short fan-out network. The device draws from the same 3.3 V rail as the memory controller and requires no special thermal relief in its 8-pin SOIC footprint.
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Test and Measurement Instrumentation
Instrumentation front ends depend on a stable, low-jitter trigger and reference clock to correlate measurements across channels. The MK2302S-01ILF gives designers a way to regenerate a reference clock close to the acquisition circuitry so that cable and backplane losses do not degrade the trigger edge, while the phase-locked loop keeps the regenerated edge aligned with the original reference. The 175 ps skew specification is small relative to the tens of nanoseconds of cable delay common in lab setups, so the device removes component delay without disturbing overall timing relationships. At 168 MHz maximum frequency it comfortably covers the clock rates used by logic analysers and protocol analysers. The 3.15 V to 3.45 V supply range fits the single 3.3 V rails typically present in instrument front ends, and the SOIC-8 package is straightforward to hand-solder or place on a small daughter card. A common implementation pairs it with a low-noise crystal oscillator and a ClockBlocks generator.
推薦
Consumer and Industrial Embedded Control Boards
Compact embedded boards often need one extra clock domain that the main microcontroller cannot generate, or need a de-jittered copy of an existing reference for a display or communications peripheral. The MK2302S-01ILF supplies a single phase-aligned CMOS output that can be routed to a display controller, an isolated communications interface or an external ADC front end, without disturbing the master clock distribution. The 168 MHz rating supports the usual 24 MHz, 48 MHz, 96 MHz and 100 MHz board references, and the narrow 3.15 V to 3.45 V supply window means it shares the 3.3 V rail that dominates these designs. With the zero delay characteristic, the output edge stays phase-consistent with the system reference, which simplifies synchronisation between the added domain and the main microcontroller. The 8-pin SOIC footprint keeps the bill of materials low-cost and avoids fine-pitch assembly in low-volume builds.
推薦
Communications and Serial Interface Clocking
High-speed serial links and parallel buses benefit from a locally regenerated clock because the transmitter and receiver share a common timing reference, and any drift between them shows up as eye closure or sampling error. The MK2302S-01ILF regenerates that shared reference close to the transceiver so both ends see a consistent, phase-aligned edge, and the phase-locked loop suppresses accumulated jitter from upstream distribution. At 168 MHz the device covers reference rates used by parallel interface bridges and serialiser-deserialiser cores, and the single CMOS output can be fanned out locally with a companion buffer when two destinations are close together. The 3.15 V to 3.45 V operating window matches the 3.3 V supply of most modern serial interface silicon, and the absence of an exposed pad keeps layout simple on dense boards where thermal relief area is scarce. Designers often combine it with a ClockBlocks generator to keep the whole reference tree deterministic.
推薦
推薦產品摘要
工程參考資料，適用於 MK2302S-01ILF — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | MK2302S-01LF | MK2302SI-01 | MK2302S-01 | MK2302S-01I | MK2302S-01T |
|---|---|---|---|---|---|---|
| Package | SOIC-8 (PDSO8, 0.154 in / 3.90 mm) | SOIC-8 (PDSO8) - same | SOIC-8 (PDSO8) - same | SOIC-8 (PDSO8) - same | SOIC-8 (PDSO8) - same | SOIC-8 (PDSO8) - same |
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics |
| Device Type | PLL-based Clock Multiplier / Zero Delay Buffer | PLL-based Clock Multiplier / Zero Delay Buffer | PLL-based Clock Multiplier / Zero Delay Buffer | PLL-based Clock Multiplier / Zero Delay Buffer | PLL-based Clock Multiplier / Zero Delay Buffer | PLL-based Clock Multiplier / Zero Delay Buffer |
| Temperature Grade Indicator in Suffix | Industrial (-01ILF) | No industrial suffix code | Different family suffix ordering | Base ordering code | Industrial designation, non lead-free suffix | Different packing/temperature code |
主要差異化特點
- PLL-based edge alignment in a single-output clock multiplier (對比MK2302S-01LF)
- Narrow 3.15 V to 3.45 V CMOS supply range matched to 3.3 V systems (對比MK2302S-01)
- Pin-compatible ordering flexibility within the 2302 ClockBlocks family (對比MK2302SI-01)
- Single true output keeps the clock tree deterministic (對比MK2302S-01I)
設計說明
A zero delay buffer removes buffer propagation delay but does not remove board skew. Keep the reference clock trace into pin 1 as short as possible, route it over a continuous reference plane, and length-match it against the output trace to the destination device. Because the MK2302S-01ILF regenerates the edge rather than correcting it, any mismatch present at its input reappears at the output; treat the device as a clean-up stage at the end of a distribution branch, not as a length-matching substitute.
The supply window is narrow at 3.15 V to 3.45 V, so place a 100 nF ceramic decoupling capacitor plus a bulk capacitor close to the supply and ground pins and keep the loop area minimal. Because the internal loop locks to the input reference, supply ripple on the 3.3 V rail can appear as phase noise on the regenerated clock; if the reference is derived from a switching supply, consider regenerating it further downstream in the chain where the rail is quieter.
The SOIC-8 package has no exposed pad, so thermal management is trivial, but the pins are on a 1.27 mm pitch and the two clock nets are typically adjacent. Avoid routing a fast unrelated signal between the input and output clock pins, and keep the output return path over solid ground to limit radiated emissions from the edge rate restored by the buffer. For fan-out beyond a single load, terminate each branch close to the buffer rather than daisy-chaining long stubs.
The most common sourcing error is confusing the ordering suffixes: MK2302S-01ILF is the industrial temperature lead-free version, while MK2302S-01LF, MK2302S-01I and MK2302S-01T carry different grade or packing codes for the same 8-pin SOIC footprint. Verify the suffix against your temperature requirement before placing the order, and note that only one true output is available, so a multi-load clock tree needs additional buffers rather than multiple loads on a single net.
合規資訊
RoHS compliant and lead free according to the component listing attributes. This is a general-purpose clock IC with no AEC-Q100 automotive qualification indicated.
