MK2308S-2ILF - 3.3V Zero-Delay Clock Buffer | Renesas
MPN： MK2308S-2ILF ✓ 啟用中MK2308S-2ILF 概覽
A zero-delay buffer is a timing integrated circuit that accepts an incoming clock and reproduces it at its outputs with very low nominal propagation delay. It belongs to the clock and timing IC hierarchy, alongside clock generators, phase-locked loops, frequency synthesizers, clock dividers, and clock-tree components. Such buffers are commonly positioned after an oscillator or clock controller to fan out a high-quality reference clock without relying on a remote source to drive several loads directly.
The MK2308S-2ILF family is identified as a 3.3 V, low-skew clock-buffer solution. A related 16-SOIC listing for the MK2308S-2I identifies the device as a zero-delay buffer operating to 133.3 MHz. These descriptions place the part in applications requiring orderly clock propagation through processors, programmable logic, communications equipment, and other synchronous digital systems. The SOIC-16 package supports conventional surface-mount PCB assembly while exposing the complete buffer interface.
Clock buffers can reduce loading problems that arise when a source clock is connected to multiple destinations. By placing the buffer near the receiving circuitry, designers can isolate the source from board capacitance, interconnect loading, and receiver input thresholds. Low-skew operation is valuable when several destinations must act within a defined timing window. The buffer does not generate a new reference frequency; instead, it preserves and redistributes the input clock with controlled edge relationships.
Typical application areas include processor and microcontroller clock trees, FPGA or CPLL input distribution, communications-interface clock fanout, data-acquisition systems, and compact industrial control electronics. The device is especially relevant where multiple downstream circuits share one oscillator output but require local buffering for predictable timing and signal integrity.
When laying out a design, place the buffer close to the clock receivers, keep clock traces short and impedance-controlled, and minimize stub lengths. Confirm input and output logic levels, operating frequency, load capacitance, and enable or power-control requirements against the manufacturer datasheet before releasing the PCB. Adequate grounding and a clean supply reference are important because clock-edge timing quality can be affected by return-path discontinuities and supply noise.
This product page combines the manufacturer-device identity, exact MPN, package information, clock-buffer function, application context, replacement considerations, and PCB-oriented design guidance. It is intended to help engineers identify the correct Renesas clock-buffer ordering code and evaluate board-level integration without obscuring the distinction between confirmed device facts and parameters that still require datasheet confirmation.
直接替換替代品，適用於 MK2308S-2ILF — 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： MK2308S-2ILF （相同外形與佔位） — 差異在於 Device Type, Package, Package Width, Number of Outputs, Output Skew.
MK2308S-2I
✅ 直接替換聯絡詢價
查看資料表 →MK2308S-2LF
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →MK2308S-2ILF 規格
| Device Type | Zero-delay, low-skew clock buffer |
| 供應電壓 | 3.3 V |
| 最大時脈頻率 | 133.3 MHz |
| 封裝 | 16-pin SOIC, 0.154 in (3.90 mm) width |
| 安裝類型 | Surface mount |
MK2308S-2ILF 16-pin soic, 0.154 in (3.90 mm) width 腳位配置指南
MK2308S-2ILF（16-pin soic, 0.154 in (3.90 mm) width 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： MK2308S-2ILF.
請參閱 資料表 以查看完整腳位配置。
典型應用
MK2308S-2ILF 適用於 6 應用s: Processor Clock Distribution, FPGA and CPLL Input Buffering, Communications Equipment Clock Fanout, Industrial Control and Data Acquisition, Automotive and Transportation Control Electronics, Interface and Serial Transceiver Clocking.
Processor Clock Distribution
The MK2308S-2ILF is useful when a processor, microcontroller, or system controller requires local distribution of a shared 3.3 V reference clock. Its zero-delay, low-skew buffer function allows one oscillator source to feed multiple sequential destinations without connecting those destinations directly to the source output. Place the IC near the clock-consuming section of the board, provide short traces, and keep return paths continuous. According to the Renesas manufacturer datasheet, the device is intended for clock distribution rather than frequency generation, so the upstream oscillator establishes the operating frequency. Verify output count, load capacitance, logic thresholds, and maximum frequency before finalizing the clock tree.
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FPGA and CPLL Input Buffering
The MK2308S-2ILF can buffer a common oscillator or controller clock before it reaches FPGA, CPLD, or other high-speed logic inputs. Low-skew buffering helps maintain predictable edge alignment when several devices share the reference clock, while local placement reduces sensitivity to source-to-load trace loading. The 16-SOIC footprint also supports conventional surface-mount assembly. According to the Renesas manufacturer datasheet, confirm the device's supported clock range and capacitive loading for the exact operating voltage. Keep the clock nets away from noisy switching paths and provide a low-impedance ground reference beneath the clock region to minimize return-path discontinuity.
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Communications Equipment Clock Fanout
In communications equipment, the MK2308S-2ILF can distribute a 3.3 V clock to serial interfaces, controllers, and data-processing logic that must operate from a common timing reference. The low-skew buffer role is useful when clock edges need to reach multiple circuit groups without loading the original oscillator directly. According to the Renesas manufacturer datasheet, the MK2308S-2ILF is a zero-delay clock buffer, so it should be treated as a clock-tree element rather than a frequency synthesizer. Validate the maximum operating frequency, output loading, and power requirements against the actual data rate and receiver count. Keep clock routing away from high-energy switching nodes and maintain short, properly referenced traces.
推薦
Industrial Control and Data Acquisition
The MK2308S-2ILF fits industrial control and data-acquisition systems where several controllers, converters, or measurement blocks share a stable clock. Buffering the reference locally helps isolate each destination from the combined input capacitance of multiple clock nets. Its 3.3 V operation aligns with many embedded control and communication subsystems, while the low-skew characteristic supports coordinated sampling and control sequences. According to the Renesas manufacturer datasheet, verify operating temperature, supply limits, and output-load requirements before deployment. For mixed analog and digital equipment, place the device at the digital clock-distribution point, preserve a continuous ground plane, and separate sensitive measurement paths from the clock network.
推薦
Automotive and Transportation Control Electronics
The MK2308S-2ILF can be evaluated for transportation-control electronics that use a 3.3 V logic clock and require repeatable edge relationships across several digital blocks. A zero-delay, low-skew buffer helps distribute the source clock without directly burdening the oscillator or relying on long point-to-point branches. According to the Renesas manufacturer datasheet, the exact operating-temperature limits and electrical ratings must be checked before use. Automotive deployment additionally requires confirmation of AEC-Q100 qualification and any manufacturer-specific change-control requirements. The 16-SOIC package supports standard PCB assembly, but production use should follow the exact approved ordering code, traceability process, and environmental documentation associated with that code.
推薦
Interface and Serial Transceiver Clocking
The MK2308S-2ILF is applicable when multiple interface circuits require a common buffered clock, particularly in systems combining serial transceivers, logic devices, and supervisory components. Local clock buffering reduces the effect of receiver loading on the upstream source and helps keep edge timing consistent across the interface group. According to the Renesas manufacturer datasheet, the part is a 16-pin 3.3 V zero-delay buffer, not a transceiver itself; therefore, it should be paired with interface devices that define the required logic levels and clock-frequency range. Confirm pin functions in the manufacturer pin table, keep clock traces short, and avoid adding test pads or long branches unless their loading has been evaluated.
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推薦產品摘要
工程參考資料，適用於 MK2308S-2ILF — 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 | MK2308S-2I | MK2308S-2LF |
|---|---|---|---|
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics |
| Package | SOIC-16, 0.154 in (3.90 mm) width | SOIC-16, 0.154 in (3.90 mm) width | SOIC-16 |
| Lead-Free Ordering Suffix | ILF | I | LF |
主要差異化特點
- Direct same-family ordering option (對比MK2308S-2I)
- Lead-free ordering coverage within the same family (對比MK2308S-2LF)
- Purpose-built low-skew clock distribution (對比MK2308S-2I)
設計說明
Place the MK2308S-2ILF close to the clock receivers rather than immediately beside the oscillator. Short traces reduce sensitivity to capacitance, reflections, and crosstalk, while a continuous ground reference provides a low-impedance return path for each fast edge. Avoid long clock branches and unnecessary test-probe stubs; if probing is unavoidable, account for the added capacitance and use the manufacturer's maximum-load guidance.
Use a low-impedance source for the clock input and maintain the specified load capacitance at every output. When fanning out to several receivers, distribute the load evenly rather than concentrating it on one output. Confirm propagation delay and output-to-output skew from the Renesas manufacturer datasheet at the intended frequency, supply voltage, temperature, and process corner before relying on a system timing budget.
Decouple the 3.3 V supply close to the device with the capacitance and placement required by the manufacturer guidance. Keep the clock buffer's return current within the same solid ground region as the clock traces, and route noisy switching currents away from the input and output networks. A stable reference plane and low-impedance supply connection are especially important when low-skew behavior contributes directly to downstream sampling accuracy.
Do not treat the zero-delay description as zero propagation time, and do not assume that every similarly packaged clock buffer has identical input thresholds, output count, or enable behavior. Verify the exact Renesas ordering code, pin functions, operating-temperature grade, and timing limits in the manufacturer datasheet. For substitution, check the complete pin description rather than relying only on the 16-SOIC package outline.
合規資訊
The ILF ordering suffix suggests a lead-free configuration, but the exact RoHS, REACH, halogen-free, and conflict-minerals declarations were not stated. AEC-Q100 qualification is not established for this standard part.
