ICS512M - 200MHz Clock Generator | Renesas Electronics
MPN: ICS512M ✗ End of LifeICS512M Overview
A PLL clock generator is a clock-and-timing integrated circuit that multiplies or organizes an input reference into one or more system clock outputs. Its place in the broader hierarchy is PLL clock generator > clock generator > clock and timing IC > integrated circuit. The ICS512M is therefore used when a system needs a more stable, controlled, or distributed clock derived from a lower-frequency source, especially where crystal and clock reference generation must share one compact device.
The verified listing identifies the ICS512M as a 200 MHz clock generator with PLL bypass, crystal or clock input, CMOS output, one circuit, and a 1:2 ratio. These characteristics make it applicable to communication hardware, RF systems, digital boards, clock generation, timing distribution, and synchronization. The 8-SOIC surface-mount package supports compact designs where a through-hole clock generator would be unnecessarily large.
The PLL architecture allows the device to produce a high-frequency output from a lower-frequency crystal or reference clock while retaining a bypass path for direct clocking. This architecture is useful when the design needs both a reference source and a multiplied clock without implementing multiple separate timing components. The 1:2 ratio is the most specific verified functional detail for the ICS512M, while other device parameters are not stated in the supplied search data.
Typical uses include generating reference and operating clocks for communication equipment, synchronizing digital subsystems, supporting RF signal-chain timing, and furnishing a CMOS clock to board-level logic. In a multi-clock system, the device can reduce the number of discrete oscillator and divider blocks, but the final loop-filter, crystal, decoupling, and output-loading design must follow the manufacturer datasheet before production release.
The primary design consideration is to confirm the exact input range, output waveform, jitter, operating temperature, and bypass behavior against the Renesas ICS512 datasheet. Engineers should also validate startup, crystal loop stability, and output loading in the intended PCB environment because those values are not fully provided in the retrieved search snippets.
This page consolidates the verified Renesas and distributor information, separates confirmed specifications from missing datasheet parameters, identifies same-family drop-in candidates, and adds practical procurement and design guidance for engineers evaluating ICS512M clock-generation requirements.
Drop-in alternatives for ICS512M — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
ICS512MT
✅ Drop-In📋 Reference alternative (not in catalog)
ICS512MILF
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
ICS512MI
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
ICS512
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
ICS512MLF
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
ICS512M Specifications
| Product Type | Clock Generator IC |
| Manufacturer | Renesas Electronics Corporation |
| Listed Clock Frequency | 200 MHz |
| Maximum Frequency in Secondary Listing | 160 MHz |
| PLL | Yes, with bypass |
| Input Type | Clock or crystal |
| Output Type | CMOS |
| Number of Circuits | 1 circuit |
| Input-to-Output Ratio | 1:2 |
| Package | 8-SOIC, 0.154 inch, 3.90 mm width |
| Pin Count | 8 pins |
| Mounting Type | Surface mount |
ICS512M 8-soic, 0.154 inch, 3.90 mm width Pin Configuration Guide
Pin configuration for ICS512M (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 ICS512M.
Refer to the datasheet for full pin configuration.
Typical Applications
ICS512M is suitable for 6 applications: Communication Equipment Clocking, RF System Reference Clocks, Digital Board Synchronization, Clock Generation and Distribution, Industrial Control and Automation, CMOS Timing Reference Circuits.
Communication Equipment Clocking
The ICS512M fits communication equipment that needs a reference clock and a multiplied clock generated from one timing device. Its confirmed PLL-with-bypass function allows a lower-frequency crystal or clock source to feed a 1:2 output relationship, while the CMOS output supports digital clock distribution. Using the integrated clock generator can reduce the number of separate oscillator, multiplier, and bypass blocks around the board. The principal design benefit is compact timing consolidation, provided the selected operating frequency and supply conditions satisfy the manufacturer limits. Layout should keep the clock path short, provide a continuous ground reference beneath the device, and follow the Renesas reference layout for the input crystal, decoupling, and CMOS output.
Recommended
RF System Reference Clocks
The ICS512M is applicable to RF systems requiring an orderly reference and multiplied clock from a shared source. The PLL-with-bypass architecture and 1:2 ratio provide a straightforward way to organize timing inside communication and RF hardware, while the 8-SOIC package preserves a small surface-mount footprint. This can simplify the partitioning of reference and operational clocks near RF, digital, and control sections. The benefit is not necessarily lower cost by itself; it is fewer independently selected clock sources and a more controlled relationship between them. Before implementation, engineers must confirm output jitter, supply sensitivity, load capacitance, and harmonic content in the Renesas datasheet, then preserve short return paths and isolate sensitive RF nodes from clock-routing noise.
Recommended
Digital Board Synchronization
The ICS512M can support digital-board synchronization where several logic domains require clocks derived from a common crystal or reference input. Its single-circuit PLL arrangement and 1:2 ratio are useful when the source board needs a systematic frequency relationship rather than unrelated free-running oscillators. The 8-SOIC package also allows placement close to the powered digital circuitry, reducing clock distribution distance and helping preserve signal integrity. Using one established clock family simplifies documentation and synchronization planning, although each destination still requires appropriate fanout or buffering. Engineers should separate sensitive data paths from the clock route, maintain a continuous reference plane, and verify setup and hold timing after accounting for propagation delay and any divider or buffer delay.
Recommended
Clock Generation and Distribution
The ICS512M is explicitly suited to clock generation and timing distribution because it produces a CMOS clock from a crystal or lower-frequency clock reference. The bypass function gives designers two operating paths within one timing block: PLL multiplication when a derived clock is needed and bypass when direct reference-clock behavior is preferable. The fixed 1:2 relationship makes the device straightforward to evaluate for systems organized around half-rate or double-rate clock domains. A practical benefit is reduced component count around the reference oscillator, but only if downstream buffers can support the available output drive and timing margins. PCB implementation should follow the manufacturer layout, use local bypassing, and route the clock as a controlled transmission-line or short point-to-point path when electromagnetic or edge-rate requirements warrant it.
Recommended
Industrial Control and Automation
The ICS512M can serve in industrial control and automation boards where deterministic clock generation is needed by processors, communication controllers, and programmable logic. The PLL-with-bypass capability supports systems that need one reference discipline across multiple functional blocks, while the surface-mount 8-SOIC package is compatible with compact automated assembly. Centralizing clock generation can improve BOM coordination and make clock relationships easier to document, particularly where multiple domains operate from one source. The design trade-off is that any device-level timing or supply problem can affect multiple subsystems. Therefore, validate startup time, temperature behavior, PLL stability, and output load across industrial operating conditions using the manufacturer datasheet and system-level testing before production deployment.
Recommended
CMOS Timing Reference Circuits
The ICS512M suits CMOS timing-reference circuits that require both a source clock and a derived clock with a controlled 1:2 relationship. Its CMOS output is compatible with the logic family selected for the target board, while the PLL bypass path allows designers to compare generated and reference timing during bring-up or operating-mode transitions. This arrangement can simplify test-point access and reduce reliance on multiple independent crystal circuits. The key engineering benefit is a compact, traceable timing architecture rather than a generic frequency multiplication claim. Designers should verify output amplitude, rise and fall times, load limits, and jitter against the datasheet, and use an oscilloscope with a sufficiently low-capacitance probe so the measurement does not materially disturb the clock node.
Recommended
Recommended Products Summary
Engineering reference data for ICS512M — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ICS512MT | ICS512MILF | ICS512MI | ICS512 | ICS512MLF |
|---|---|---|---|---|---|---|
| Package | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) |
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics |
| Product Type | PLL Clock Generator IC | PLL Clock Generator IC | ICS512-family Clock Generator IC | ICS512-family Clock Generator IC | ICS512-family Clock Generator IC | ICS512-family Clock Generator IC |
| PLL Bypass | Yes | Yes, consistent functional characteristics | Yes, same ICS512 family | Yes, same ICS512 family | Yes, same ICS512 family | Yes, same ICS512 family |
| Input Type | Clock or crystal | Clock or crystal | Clock or crystal | Clock or crystal | Clock or crystal | Clock or crystal |
| Output Type | CMOS | CMOS | CMOS | CMOS | CMOS | CMOS |
| Input-to-Output Ratio | 1:2 | 1:2 | 1:2 | 1:2 | 1:2 | 1:2 |
| Number of Circuits | 1 | 1 | 1 | 1 | 1 | 1 |
Key Differentiators
- Documented pin-compatible same-family replacement (vs ICS512MT)
- Integrated PLL and bypass functionality (vs ICS512MT)
- Single-circuit clock generation in an 8-SOIC package (vs ICS512MI)
Design Notes
Follow the Renesas ICS512 reference layout for the crystal or clock input, PLL components, and bypass connection. Keep the oscillator loop compact, provide an uninterrupted ground connection beneath the device, and place required input and output capacitors at the datasheet-specified pins. Clock traces should be short and directly terminated; long routes should be evaluated for reflections, loading, and edge-rate degradation before use.
Decouple the ICS512M supply exactly as specified by the manufacturer datasheet and keep the high-frequency return path continuous. Because the verified search data does not provide the operating voltage, supply-current, or PLL-loop specifications, do not infer capacitor values or regulator headroom. Confirm the supply tolerance, startup sequence, and bypass-mode requirements against the official document before schematic release.
Treat the CMOS clock output as a controlled signal rather than an unrestricted logic output. Confirm the maximum load, output rise and fall times, and available drive strength from the datasheet. Use a clock buffer when fanout or trace capacitance exceeds the specified limit, and avoid routing the clock adjacent to high-current switching nodes or sensitive analog inputs. Account for buffer and propagation delay in downstream timing analysis.
Compliance Information
The supplied search results do not provide verified compliance statements for ICS512M. No compliance claim is inferred from the manufacturer or distributor listings.
