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Renesas 8N4SV76KC-0036CDI8
- Part No.:
- 8N4SV76KC-0036CDI8
- Manufacturer:
- Renesas
- Category:
- Programmable Timers and Oscillators
- Package:
- 6-CLCC
- Datasheet:
-
8N4SV76KC-0036CDI8.pdf
- Description:
- IC OSC VCXO 100MHZ 6-CLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,674
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Product details
Overview
8N4SV76KC-0036CDI8 from Integrated Device Technology is an LVDS frequency-programmable VCXO with factory-set 156.25 MHz output, ±20 ppm total stability (Option K), and 0.53 ps RMS phase jitter (12 kHz–20 MHz integration). It operates from 2.5 V or 3.3 V supply, supports –40°C to +85°C ambient, and delivers differential clock signals for high-speed serial interfaces in telecom infrastructure.
For engineers reviewing the 8N4SV76KC-0036CDI8 datasheet, 8N4SV76KC-0036CDI8 pinout, 8N4SV76KC-0036CDI8 application, or 8N4SV76KC-0036CDI8 equivalent, key selection criteria include its fractional-N PLL architecture, programmable APR (±4.5 to ±754.5 ppm), LVDS output compliance, nOE-controlled tri-state capability, and ceramic 5 mm × 7 mm × 1.55 mm package with six terminals.
Technical Context
The 8N4SV76KC-0036CDI8 implements a fourth-generation FemtoClock® NG PLL using a 114.285 MHz fundamental-mode crystal oscillator, a 1950–2600 MHz VCO, and a fractional feedback divider (MINT + MFRAC) enabling 218 Hz frequency resolution. Its architecture includes pre-divider (P), post-divider (N), and configurable ADC gain/polarity registers programmed at factory.
It integrates LVDS output drivers with 247–454 mV differential voltage (VOD), 1.13–1.31 V offset (VOS), and supports output enable via LVCMOS/LVTTL-compatible nOE input. The device uses internal pulldown resistors on VC and nOE inputs and requires no external configuration circuitry post-manufacture.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Frequency | Factory-programmed to 156.25 MHz - precise reference for Ethernet, CPRI, and OTN line rates. |
| Frequency Stability | ±20 ppm total stability (Option K, 10-year life) - ensures timing margin in wireless base stations. |
| RMS Phase Jitter | 0.53 ps typical (12 kHz–20 MHz, 156.25 MHz output) - meets SONET OC-192 and 10G Ethernet jitter budgets. |
| Supply Voltage | 2.5 V or 3.3 V ±5% - compatible with common FPGA/ASIC I/O rails and simplifies power design. |
| Operating Temperature | –40°C to +85°C - qualified for industrial and outdoor telecom equipment deployment. |
| Package | RoHS-compliant 6-lead ceramic VFQFN, 5 mm × 7 mm × 1.55 mm - low-profile, thermally robust, and board-space efficient. |
| Output Interface | LVDS differential pair (Q/nQ) - provides noise-immune signaling at >1 Gbps data rates. |
| Control Input | nOE pin (LVCMOS/LVTTL) - enables full output disable for power gating and system-level clock management. |
Pinout & Package
6-lead ceramic VFQFN package (5 mm × 7 mm × 1.55 mm), RoHS 6-compliant, with exposed thermal pad (not electrically connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VC | VCXO control voltage input | Analog tuning port accepting 0–VDD range; sets output frequency deviation per programmed KV (ppm/V). |
| nOE | Active-low output enable | LVTTL/LVCMOS-compatible input; drives Q/nQ into high-impedance when logic high. |
| GND | Power ground | Reference return for VDD and all internal circuits; must be low-inductance connection to PCB ground plane. |
| Q | Differential LVDS output (+) | True-side LVDS signal; 247–454 mV swing, 1.13–1.31 V common-mode, requires 100 Ω termination. |
| nQ | Differential LVDS output (–) | Complementary LVDS signal; matched delay and amplitude to Q for skew-critical applications. |
| VDD | Power supply input | Accepts 2.5 V or 3.3 V ±5%; requires local 0.1 µF decoupling capacitor placed adjacent to pin. |
Key Features
| Feature | Design Value |
|---|---|
| Fractional-N PLL with 218 Hz resolution | Enables exact frequency synthesis for multi-rate protocols (e.g., 156.25 MHz for 10G Ethernet, 122.88 MHz for CPRI) without external dividers. |
| Programmable absolute pull range (APR) | Factory-configurable APR from ±4.5 to ±754.5 ppm - matches loop filter bandwidth requirements of diverse PLL systems. |
| LVDS output with <0.73 ps RMS jitter | Meets stringent jitter specs for SerDes PHYs in 10G/25G optical modules and high-speed backplanes. |
| nOE-controlled tri-state outputs | Allows dynamic clock gating during system sleep or reconfiguration without external switches or level shifters. |
| FemtoClock® NG VCO architecture | Delivers low phase noise (–127 dBc/Hz @ 1 MHz offset) and high-frequency operation up to 1.3 GHz - suitable for RF sampling clocks. |
| Single-supply operation (2.5 V or 3.3 V) | Eliminates need for dual-rail supplies; reduces BOM count and layout complexity in mixed-voltage systems. |
Applications
| Wireless Baseband Unit (BBU) | Optical Transport Network (OTN) Line Card |
|---|---|
Use Scenario: Synchronizing multiple FPGAs and ADC/DACs in massive MIMO radio units requiring sub-100 ps jitter. IC Role / Device Role / Timing Role: Primary low-jitter clock source for JESD204B/C converters and CPRI fronthaul interfaces. Use Value: 0.53 ps RMS phase jitter at 156.25 MHz ensures <10–12 bit error rate in 25 Gbps serial links. | Use Scenario: Providing synchronous clocking for OTU2/OTU3 framers and FEC engines in metro DWDM line cards. IC Role / Device Role / Timing Role: Stratum-3E-compliant VCXO delivering stable 156.25 MHz and 125 MHz clocks with ±20 ppm stability. Use Value: Factory-programmed APR and temperature-compensated design meet GR-1244-CORE long-term drift requirements. |
| 10G/25G Ethernet Switch ASIC | High-Speed Test Equipment Clock Module |
Use Scenario: Driving SerDes lanes in switch fabric ASICs where deterministic latency and low jitter are critical for cut-through forwarding. IC Role / Device Role / Timing Role: Low-phase-noise LVDS clock generator referenced to internal 114.285 MHz crystal. Use Value: –127 dBc/Hz phase noise @ 1 MHz offset minimizes reciprocal mixing in high-density switch PCBs. | Use Scenario: Serving as programmable reference oscillator in automated test equipment requiring rapid frequency switching between 15.476 MHz and 1.3 GHz. IC Role / Device Role / Timing Role: Frequency-agile VCXO with factory-set default frequencies and user-tunable VC input. Use Value: 218 Hz frequency resolution enables precise stimulus generation for jitter tolerance testing per IEEE 802.3. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar VCXO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si510-PROG | CMOS output only; no LVDS; ±50 ppm stability (standard grade); 1.8–3.3 V supply | Not suitable for high-speed differential interfaces; requires external LVDS translator for SerDes use | Select only if CMOS load compatibility and lower cost outweigh jitter and interface requirements. |
| AK2-156.250MHZ-E | Fixed-frequency LVDS XO (no VC input); ±20 ppm stability; same 5×7 mm package | Lacks frequency pulling capability - cannot serve as VCXO in PLL-based clock recovery systems | Choose when absolute frequency stability is prioritized over tunability and loop control is handled externally. |
Compared with 8N4SV76KC-0036CDI8, Si510-PROG offers broader voltage support but lacks native LVDS and VCXO functionality, while AK2-156.250MHZ-E provides identical stability and form factor but zero pull range - making 8N4SV76KC-0036CDI8 the sole choice for closed-loop timing systems requiring analog frequency adjustment.
Availability
8N4SV76KC-0036CDI8 is available at Aetrix Electronics and suitable for wireless infrastructure, optical transport, high-speed networking, and test equipment requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for 8N4SV76KC-0036CDI8 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
Integrated Device Technology (IDT), now part of Renesas Electronics, designs high-performance timing, memory interface, and RF solutions for communications and computing markets.
The IDT8N4SV76 family delivers frequency-programmable VCXOs using FemtoClock® NG technology, targeting applications demanding ultra-low jitter, wide pull range, and factory-configured precision in compact ceramic packages.
FAQ
What is the factory-programmed output frequency of the 8N4SV76KC-0036CDI8?
The 8N4SV76KC-0036CDI8 is factory-programmed to 156.25 MHz, a standard reference frequency used in 10G Ethernet, OTU2, and CPRI applications. This frequency is set during manufacturing and cannot be altered in the field. The device retains full VCXO functionality, allowing analog tuning around 156.25 MHz within its configured absolute pull range.
Does the 8N4SV76KC-0036CDI8 support both 2.5 V and 3.3 V supply voltages?
Yes, the 8N4SV76KC-0036CDI8 operates from either 2.5 V ±5% or 3.3 V ±5% supply voltage, as specified in Tables 4A and 4B of the datasheet. Power supply current is 135–170 mA at 2.5 V and 140–175 mA at 3.3 V. Decoupling capacitors must be placed adjacent to the VDD pin regardless of selected voltage.
What is the meaning of "K" in the part number 8N4SV76KC-0036CDI8?
The "K" in 8N4SV76KC-0036CDI8 denotes the Option Code specifying 3.3 V supply voltage and ±20 ppm total frequency stability over temperature, aging, and initial accuracy (10-year life). This corresponds to high-stability operation required in telecom infrastructure, distinct from Option A (±100 ppm) or E (±50 ppm).
Can the 8N4SV76KC-0036CDI8 be used as a drop-in replacement for fixed-frequency LVDS oscillators?
No - the 8N4SV76KC-0036CDI8 is a VCXO with analog frequency tuning capability and requires a control voltage (VC) input. While it can operate at a fixed frequency when VC is held constant, its pinout, functional behavior (e.g., nOE vs OE polarity), and electrical characteristics differ from fixed XO parts like AK2-156.250MHZ-E. Direct substitution requires validation of loop dynamics and stability margins.
What is the maximum RMS phase jitter specification for the 8N4SV76KC-0036CDI8 at 156.25 MHz?
The maximum RMS phase jitter for the 8N4SV76KC-0036CDI8 at 156.25 MHz is 0.73 ps (12 kHz–20 MHz integration band), per Table 5A. The typical value is 0.53 ps. This performance is guaranteed across the full –40°C to +85°C operating range and meets industry requirements for 10G/25G SerDes clocking.
8N4SV76KC-0036CDI8 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:
- -
8N4SV76KC-0036CDI8 FAQ
1.How can I place an order for 8N4SV76KC-0036CDI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 8N4SV76KC-0036CDI8 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
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The price and inventory of 8N4SV76KC-0036CDI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 8N4SV76KC-0036CDI8 is usually 5 days.
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5.How can I obtain technical support or documentation for 8N4SV76KC-0036CDI8?
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6.How does Aetrix verify that 8N4SV76KC-0036CDI8 is sourced from the original manufacturer or authorized distributors?
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7.What is the process for return or replacement of 8N4SV76KC-0036CDI8?
All 8N4SV76KC-0036CDI8 units undergo pre-shipment inspection (PSI). If there is an issue with 8N4SV76KC-0036CDI8, 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 8N4SV76KC-0036CDI8 part is unused and in its original packaging.
Return procedure for 8N4SV76KC-0036CDI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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