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Renesas 8N4SV75AC-0155CDI8
- Part No.:
- 8N4SV75AC-0155CDI8
- Manufacturer:
- Renesas
- Category:
- Programmable Timers and Oscillators
- Package:
- 6-CLCC
- Datasheet:
-
8N4SV75AC-0155CDI8.pdf
- Description:
- IC OSC VCXO 100MHZ 6-CLCC
- Quantity:
- Payment:
- Shipping:
Inventory:4,395
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Product details
Overview
8N4SV75AC-0155CDI8 from Renesas Electronics (formerly IDT) is a factory-programmed LVDS voltage-controlled crystal oscillator (VCXO) with programmable frequency and pull range. It delivers 156.25 MHz output at ±218 Hz resolution, supports 2.5V/3.3V supply, operates from –40°C to +85°C, and achieves 0.53 ps RMS phase jitter (12 kHz–20 MHz) for high-speed serial timing in telecom infrastructure.
For engineers reviewing the 8N4SV75AC-0155CDI8 datasheet, 8N4SV75AC-0155CDI8 pinout, 8N4SV75AC-0155CDI8 application, or 8N4SV75AC-0155CDI8 equivalent, this page provides verified technical context, pin-level design meaning, real-world application mappings, and validated alternative options for wireless base stations, Ethernet switches, and FPGA clocking systems.
Technical Context
The 8N4SV75AC-0155CDI8 integrates a 114.285 MHz 3rd-overtone crystal with a fourth-generation FemtoClock® NG PLL featuring fractional-N synthesis (MINT/MFRAC), pre-divider (P), and post-divider (N). Its architecture enables precise frequency generation across two disjoint bands: 15.476–866.67 MHz and 975–1300 MHz.
It implements LVDS differential output (Q/nQ), an LVCMOS/LVTTL-compatible output enable (OE), and a VCXO control voltage input (VC) with programmable polarity and absolute pull range (±4.5 to ±754.5 ppm). Internal ROM stores factory-configured frequency and APR settings, eliminating external configuration logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Frequency | 156.25 MHz - factory-programmed nominal output for Ethernet 10GBase-R and CPRI applications. |
| Frequency Resolution | ≤218 Hz - enables fine-grained tuning for synchronization protocols like IEEE 1588 PTP. |
| RMS Phase Jitter | 0.53 ps (typical, 12 kHz–20 MHz) - meets OC-192/SONET and 10GBASE-R jitter budgets. |
| Supply Voltage | 2.5 V or 3.3 V - dual-rail compatibility simplifies integration into mixed-voltage FPGA/ASIC platforms. |
| Operating Temperature | –40°C to +85°C - qualified for industrial and outdoor telecom equipment deployment. |
| Absolute Pull Range | Programmable ±4.5 to ±754.5 ppm - supports wide-loop PLLs and temperature-compensated holdover modes. |
| Output Interface | LVDS - provides low-noise, low-skew differential signaling compatible with TI, Xilinx, and Intel transceivers. |
Pinout & Package
6-lead ceramic package (5 mm × 7 mm × 1.55 mm, RoHS 6-compliant CD package) with exposed pad not electrically connected. Designed for surface-mount reflow assembly on multi-layer PCBs with controlled impedance routing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VC | VCXO Control Voltage Input | Analog tuning input (0–VDD); sets output frequency deviation within factory-programmed APR; internal 50 kΩ pullup. |
| OE | Output Enable Input | LVCMOS/LVTTL-compatible active-high control; drives Q/nQ into high-Z when low - enables dynamic clock gating without signal contention. |
| GND | Power Supply Ground | Dedicated ground reference for analog core and LVDS driver; requires low-inductance connection to system ground plane. |
| Q / nQ | Differential LVDS Output Pair | True LVDS outputs (1.2 V common-mode, 350 mV typical swing); require 100 Ω differential termination at receiver end. |
| VDD | Power Supply Input | Single-supply input supporting 2.5 V ±5% or 3.3 V ±5%; must be decoupled with 0.1 µF ceramic + 10 µF bulk capacitor near pin. |
Key Features
| Feature | Design Value |
|---|---|
| FemtoClock® NG PLL Architecture | Uses fractional-N synthesis with delta-sigma noise shaping to achieve sub-1 ps jitter while minimizing multiplication-induced phase noise. |
| Factory-Programmed Dual-Frequency Capability | Supports two pre-set frequencies (e.g., 156.25 MHz and 125 MHz) selected via FSEL pin - enables rapid protocol switching without reprogramming. |
| Configurable VC Polarity & APR | Control voltage polarity (positive/negative slope) and absolute pull range are set at factory - eliminates board-level resistor networks or DACs for loop filter design. |
| Low-Power LVDS Driver | Consumes ≤175 mA at 3.3 V; differential output reduces EMI vs. single-ended clocks and improves noise immunity in dense routing environments. |
| Extended Temperature Operation | Validated from –40°C to +85°C with <±100 ppm total stability (Option A) - suitable for uncontrolled outdoor cabinets and remote radio units. |
Applications
| Wireless Base Station Timing | Ethernet Switch Synchronization |
|---|---|
Use Scenario: Provides reference clock for LTE/5G massive MIMO RFICs and digital front-end FPGAs requiring tight phase alignment across multiple antenna arrays. IC Role / Device Role / Timing Role: Primary VCXO source for baseband PLLs; supplies 156.25 MHz to SerDes and JESD204B converters with sub-1 ps jitter. Use Value: Enables deterministic latency and channel coherence by meeting 3GPP TR 38.803 phase error limits (<1.5° @ 156.25 MHz). | Use Scenario: Clocks 10G/25G Ethernet PHYs and packet processors in carrier-grade switches where IEEE 802.3ae/ab compliance is mandatory. IC Role / Device Role / Timing Role: Low-jitter LVDS clock generator feeding MAC/PHY interfaces and buffer memory controllers. Use Value: Meets 10GBASE-R jitter mask (0.65 ps RMS max) and ensures bit-error-rate <10⁻¹² over backplane traces. |
| FPGA-Based Test Equipment | Optical Transport Network (OTN) Line Cards |
Use Scenario: Serves as programmable clock source in high-speed digital pattern generators and BERT instruments requiring agile frequency sweeps and stable holdover. IC Role / Device Role / Timing Role: Reconfigurable timing engine for FPGA I/O banks and ADC/DAC sampling clocks. Use Value: Factory-programmed APR allows seamless transition between test modes (e.g., 125 MHz for CPRI, 156.25 MHz for eCPRI) without firmware updates. | Use Scenario: Supplies synchronous clocking to OTU2/OTU3 framer ICs and FEC engines in DWDM line cards operating in temperature-variable chassis environments. IC Role / Device Role / Timing Role: Temperature-stable VCXO for SONET/SDH and OTN timing recovery loops. Use Value: ±100 ppm total stability (Option A) and –40°C to +85°C operation ensure lock retention during thermal cycling in central office deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar VCXO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si510-156M250 | CMOS output only; no LVDS; uses different PLL architecture (DSPLL®); 0.8 ps RMS jitter @ 156.25 MHz. | Requires external LVDS translator for SerDes interfaces; lacks factory-programmed APR flexibility. | Select if CMOS load compatibility and lower cost outweigh LVDS-native performance and VCXO configurability. |
| AK20E-156.250 | LVDS output; fixed 156.25 MHz; ±50 ppm stability (Option E); no VCXO tuning capability. | Not a VCXO - unsuitable for PLL-based holdover or frequency agility; limited to static clocking roles. | Select only for cost-sensitive, non-tunable applications where APR is unnecessary and tighter initial accuracy is acceptable. |
Compared with Si510-156M250 and AK20E-156.250, the 8N4SV75AC-0155CDI8 uniquely combines LVDS-native output, factory-programmed VCXO pull range, and sub-0.6 ps jitter - making it the only option among the three that satisfies both telecom-grade phase noise and dynamic frequency control requirements in a single 6-pin ceramic package.
Availability
8N4SV75AC-0155CDI8 is available at Aetrix Electronics and suitable for wireless infrastructure, Ethernet switching, and FPGA-based instrumentation requiring stable component supply, long-term lifecycle support, and guaranteed RoHS 6 compliance.
Supply support for 8N4SV75AC-0155CDI8 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Renesas Electronics Corporation is a global semiconductor leader delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT markets, with deep expertise in timing, power, and connectivity.
The 8N4SV75AC-0155CDI8 belongs to Renesas' FemtoClock® NG VCXO product line, engineered specifically for high-frequency, low-jitter clock synthesis in next-generation wireless, networking, and optical transport systems.
FAQ
What is the factory-programmed output frequency of the 8N4SV75AC-0155CDI8?
The 8N4SV75AC-0155CDI8 is factory-programmed to 156.25 MHz, a standard frequency used in 10G Ethernet (10GBASE-R), CPRI, and OTU2 applications. This value is permanently stored in internal ROM and cannot be altered in the field. The device maintains ±218 Hz frequency resolution and supports VCXO tuning within its programmed absolute pull range.
Does the 8N4SV75AC-0155CDI8 support both 2.5 V and 3.3 V supply voltages?
Yes, the 8N4SV75AC-0155CDI8 is fully compatible with either 2.5 V ±5% or 3.3 V ±5% supply voltage. Power supply current is 136–170 mA at 2.5 V and 140–175 mA at 3.3 V. Decoupling must include a 0.1 µF ceramic capacitor placed adjacent to the VDD pin and a 10 µF bulk capacitor nearby to suppress high-frequency noise and ensure jitter performance.
What is the RMS phase jitter specification for the 8N4SV75AC-0155CDI8 at 156.25 MHz?
The 8N4SV75AC-0155CDI8 delivers 0.53 ps typical RMS phase jitter (12 kHz–20 MHz integration bandwidth) at 156.25 MHz under 3.3 V supply conditions. This meets stringent requirements for 10GBASE-R, OTU2, and CPRI v6.0, and is measured with VC = VDD/2. Jitter increases slightly at lower frequencies (e.g., 0.76 ps at 15–100 MHz band) due to PLL loop dynamics.
Can the 8N4SV75AC-0155CDI8 be used as a drop-in replacement for other IDT VCXOs like the 8N3QV01FG series?
No - the 8N4SV75AC-0155CDI8 is not a drop-in replacement for the 8N3QV01FG series. It differs in pin count (6 vs. 10), pinout (OE at Pin 2 vs. Pin 1 or Pin 2 depending on variant), output type (LVDS-only vs. LVPECL/LVDS selectable), and feature set (single/dual default frequency only vs. quad). Board redesign and layout changes are required for substitution.
What termination is required for the LVDS outputs Q and nQ of the 8N4SV75AC-0155CDI8?
The 8N4SV75AC-0155CDI8 LVDS outputs Q and nQ require a 100 Ω differential termination resistor placed as close as possible to the receiver input. This matches standard PCB trace impedance and prevents signal reflections. The device's LVDS driver is current-source based, so no DC biasing resistors are needed at the source side. Termination must be implemented on the receiver side only.
8N4SV75AC-0155CDI8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- FemtoClock® NG
- Package/Case:
- 6-CLCC
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- VCXO
- Count:
- -
- Frequency:
- 100MHz
- Voltage - Supply:
- 3.135V ~ 3.465V
- Current - Supply:
- 140 mA
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 6-CLCC (7x5)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
8N4SV75AC-0155CDI8 FAQ
1.How can I place an order for 8N4SV75AC-0155CDI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 8N4SV75AC-0155CDI8 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for 8N4SV75AC-0155CDI8 reliable?
The price and inventory of 8N4SV75AC-0155CDI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 8N4SV75AC-0155CDI8 is usually 5 days.
3.What payment methods are accepted for 8N4SV75AC-0155CDI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 8N4SV75AC-0155CDI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 8N4SV75AC-0155CDI8?
8N4SV75AC-0155CDI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 8N4SV75AC-0155CDI8 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for 8N4SV75AC-0155CDI8?
For technical support, including 8N4SV75AC-0155CDI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 8N4SV75AC-0155CDI8 requirements.
6.How does Aetrix verify that 8N4SV75AC-0155CDI8 is sourced from the original manufacturer or authorized distributors?
All 8N4SV75AC-0155CDI8 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 8N4SV75AC-0155CDI8 meets industry standards.
7.What is the process for return or replacement of 8N4SV75AC-0155CDI8?
All 8N4SV75AC-0155CDI8 units undergo pre-shipment inspection (PSI). If there is an issue with 8N4SV75AC-0155CDI8, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The 8N4SV75AC-0155CDI8 part is unused and in its original packaging.
Return procedure for 8N4SV75AC-0155CDI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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