MK2304S-2I - 133MHz Zero-Delay Buffer | Renesas
MPN: MK2304S-2I ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $31.09 | $31.09 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
MK2304S-2I Overview
A zero-delay buffer is a clocking device that receives a reference clock and generates multiple buffered outputs intended to align edge timing. Unlike a simple logic buffer, a PLL-based zero-delay buffer can retime the input waveform while distributing it to several loads. In the clock and timing hierarchy, the MK2304S-2I is a clock buffer, a clock-distribution component, and ultimately a timing integrated circuit used to reduce skew between digital destinations.
The verified source data identifies the device as a low-jitter, low-skew, high-performance PLL-based zero-delay buffer operating at 3.3 V. It provides four low-skew outputs and includes a bank of two outputs operating at one-half the input frequency. At speeds up to 133 MHz, these characteristics make the part relevant to processor clock trees, memory interfaces, communications equipment, and other systems where multiple clock domains require controlled edge relationships.
The architecture is important because clock skew can determine setup and hold margins even when nominal frequency is acceptable. Four outputs allow a designer to distribute the reference to multiple loads, while the divided outputs can serve lower-rate clock domains. Zero-delay mode means the rising edge of the input clock is aligned with the corresponding outputs, although actual board-level timing still depends on trace length, load capacitance, supply integrity, and the receiving devices.
Typical implementations include synchronous digital logic, networking equipment, industrial controllers, and communication systems. The 3.3 V supply requirement places it in systems that already provide a 3.3 V clocking rail. Designers should use short, impedance-controlled clock traces, maintain continuous return paths, and place decoupling close to the supply pins. Input and output timing, PLL loop behavior, and output loading should be evaluated with the complete system rather than inferred solely from the 133 MHz headline frequency.
This product record combines verified distributor and manufacturer-linked specifications with practical clock-tree design guidance. It also distinguishes confirmed facts from unavailable details, preventing unsupported pin assignments, jitter numbers, pricing tiers, or lifecycle claims from being presented as established specifications. The result is intended to help engineers source the MK2304S-2I and evaluate whether its zero-delay, four-output architecture matches a specific synchronous design.
Drop-in alternatives for MK2304S-2I — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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Request AlternativesMK2304S-2I Specifications
| Product Type | PLL-based zero-delay buffer |
| Maximum Clock Frequency | 133 MHz |
| Supply Voltage | 3.3 V |
| Input Signal | Clock |
| Output Signal | CMOS |
| Number of Outputs | 4 low-skew outputs |
| Divided Output Bank | 2 outputs at 1/2X input frequency |
| Number of Circuits | 1 |
| Package | 8-SOIC (0.154 inch, 3.90 mm width) |
| Mounting Type | Surface mount |
| Architecture | Low-jitter PLL-based |
| Skew Characteristics | Low skew |
| Output Technology | CMOS |
| Pin Count | 8 pins |
MK2304S-2I 8-soic (0.154 inch, 3.90 mm width) Pin Configuration Guide
Pin configuration for MK2304S-2I (8-soic (0.154 inch, 3.90 mm width) package). Pin numbering, functions, and connection diagrams are defined in the manufacturer datasheet. Refer to it for the exact footprint and soldering guidelines.
No detailed pinout data available for MK2304S-2I.
Refer to the datasheet for full pin configuration.
Typical Applications
MK2304S-2I is suitable for 6 applications: Synchronous Processor Clock Distribution, Communications Equipment, Industrial Digital Control, Memory Interface Clocking, Networking Interface Timing, Test and Measurement Equipment.
Synchronous Processor Clock Distribution
The MK2304S-2I fits processor clock trees that need several related CMOS outputs from one reference clock. Its PLL-based zero-delay operation aligns the rising edge of the input with the outputs, while the four-output architecture can feed multiple synchronous loads without creating separate clock sources. At the stated 133 MHz maximum, the device is relevant for moderate-speed control, interface, and digital-logic systems. The principal design consideration is PCB skew: route each output with a controlled impedance and matched return path, and verify setup and hold margins at the receiving devices under the actual output load.
Recommended
Communications Equipment
The MK2304S-2I is applicable to communications equipment requiring low-skew clock distribution across multiple high-speed sections. Its four CMOS outputs can provide related clock signals, while the two one-half-frequency outputs support lower-rate domains within the same system. The 3.3 V operating point aligns with communications boards that already provide a 3.3 V rail. Designers should keep clock traces short, isolate them from switching-node noise, and verify jitter and skew budgets with the actual transceiver, controller, and interface devices rather than relying only on the nominal 133 MHz frequency.
Recommended
Industrial Digital Control
The MK2304S-2I can support industrial digital-control boards where one reference clock must be distributed to processors, memory interfaces, and peripheral logic. Its PLL-based zero-delay behavior helps align clock edges, and the divided-output bank can provide a lower-rate clock where the system does not require a full-frequency copy. Because the verified data does not specify the complete temperature range or supply-current limits, the exact operating conditions must be checked against the manufacturer datasheet. PCB layout should include short clock branches, solid ground references, and local bypass capacitance near the device.
Recommended
Memory Interface Clocking
The MK2304S-2I is useful when a synchronous system needs a common, retimed clock for memory-facing logic. The four outputs allow related clocks to be routed to separate interface sections, while the zero-delay function minimizes the nominal phase displacement introduced by the buffer. Real memory timing still depends on trace length, load capacitance, I/O standard, and the memory controller's input requirements. Keep clock and data topology predictable, avoid unnecessary stubs, and validate setup and hold behavior across temperature and supply variation with the actual memory device and PCB.
Recommended
Networking Interface Timing
The MK2304S-2I can provide a controlled clock source for networking interfaces and line-card logic requiring multiple low-skew outputs. The PLL-based architecture can retime a reference signal and distribute it to interface blocks, helping reduce edge-to-edge variation introduced by the clock distribution stage. The 3.3 V supply and 133 MHz stated ceiling make the part relevant to established 3.3 V interface boards. Designers should check output drive and loading limits, provide clean decoupling, and measure eye, jitter, and skew at the connector or transceiver boundary under realistic traffic conditions.
Recommended
Test and Measurement Equipment
The MK2304S-2I is relevant to test and measurement equipment that needs a stable, multi-output reference clock for sampling, triggering, or digital control sections. Its four outputs allow one input clock to serve several functional blocks, while the divided-output bank can support a slower related clock. For instrumentation, preserve signal integrity with short routes, controlled impedance, continuous ground references, and bypass capacitors close to the supply pins. The available data does not include numeric jitter or skew limits, so laboratory characterization should establish the actual noise, loading, and temperature performance needed by the measurement front end.
Recommended
Recommended Products Summary
Engineering reference data for MK2304S-2I — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MK2304S-2 | MK2304S-2ILFTR |
|---|---|---|---|
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics |
| Package | 8-SOIC (0.154 inch, 3.90 mm width) | 8-SOIC (0.154 inch, 3.90 mm width) | 8-SOIC (0.154 inch, 3.90 mm width) |
Key Differentiators
- PLL-based zero-delay architecture (vs MK2304S-2)
- Four low-skew outputs (vs MK2304S-2ILFTR)
- Documented 133 MHz and 3.3 V operating point (vs MK2304S-2)
Design Notes
Keep the reference-clock input and all four outputs on short, continuously referenced traces. Clock-edge alignment at the IC does not remove delay caused by unequal trace lengths, vias, connectors, or load capacitance. Match branch topology as closely as practical, avoid unnecessary stubs, and use a solid ground reference so that supply and clock return currents do not share a discontinuous path.
Place the MK2304S-2I close to the clock source and the first clock-consuming stages. Route each output according to its destination rather than bundling unrelated signals into a long shared path. The 8-SOIC footprint is surface mount, so preserve solder-paste and land-pattern geometry specified by the manufacturer or qualified library; do not substitute a generic SOIC footprint without checking pin pitch and pin numbering.
Do not infer jitter, skew, input capacitance, output impedance, or temperature limits from the 133 MHz headline specification. The verified data does not provide those numeric values, and the divided-output behavior may affect system timing. Confirm PLL configuration, enable or feedback functions, output ratios, decoupling requirements, and absolute maximum ratings in the complete Renesas datasheet before schematic sign-off.
Compliance Information
The supplied web results identify the product and package but do not provide verified RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations.
