8N3SV75BC-0099CDI - 187.5MHz FemtoClock VCXO, LVPECL | Renesas
MPN: 8N3SV75BC-0099CDI ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $38.5 | $38.50 |
| 10 | $35.2 | $352.00 |
| 100 | $30.85 | $3,085.00 |
| 500 | $27.4 | $13,700.00 |
| 1,000 | $24.95 | $24,950.00 |
8N3SV75BC-0099CDI Overview
A VCXO (voltage-controlled crystal oscillator) is a type of oscillator whose output frequency can be finely adjusted by an external control voltage applied to a tuning pin. It is a member of the broader oscillator taxonomy: VCXO -> crystal oscillator -> timing device -> clock generator -> frequency control component. VCXOs are used where the local reference needs to be locked to a network or backplane clock via a phase-locked loop.
Key features include a 187.5 MHz LVPECL differential output, 2.5V supply operation, sub-ps RMS phase jitter, and FemtoClock ultra-low-jitter architecture. The 8N3SV75 platform supports factory-programmable output frequencies from 15.476 MHz to 1500 MHz with 1 ppm or better frequency stability across industrial temperature ranges.
The device uses a third-overtone crystal with a fundamental-frequency PLL multiplier and a low-noise LVPECL output stage. Internal LDOs isolate the oscillator core from supply noise, yielding high PSRR and predictable jitter behavior even when the host board supplies a noisy 2.5V rail.
Typical applications include SONET/SDH line cards, optical transport network (OTN) framers, FPGA serializer/deserializer reference clocks, high-speed ADC/DAC sampling clocks, and wireless base station timing references. Any 187.5 MHz reference point - including legacy Ethernet PHYs - can be served by this part.
A critical design consideration is that the output frequency is fixed at order time; frequency changes require a new MPN. Layout must keep the LVPECL pair (OUT, /OUT) matched-length and 50-ohm terminated at the receiver.
This page synthesizes distributor pricing, same-package alternatives, and design guidance not found in the manufacturer datasheet.
Drop-in alternatives for 8N3SV75BC-0099CDI — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
8N3SV75AC-0099CDI
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
8N3SV75FC-0099CDI
✅ Drop-In📋 Reference alternative (not in catalog)
8N3SV75BC-0099CDI8
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
8N3SV75BC-1999CDI8
✅ Drop-In📋 Reference alternative (not in catalog)
8N3SV75AC-0099CDI
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
8N3SV75BC-0099CDI Specifications
| Function | Programmable FemtoClock VCXO (factory-programmed frequency) |
| Output Frequency | 187.5 MHz (factory programmed) |
| Output Type | LVPECL differential (OUT, /OUT) |
| Supply Voltage | 2.375 V to 2.625 V (nominal 2.5 V) |
| Frequency Stability | +/- 50 ppm (industrial); +/- 100 ppm (extended commercial) |
| RMS Phase Jitter | < 1 ps RMS (12 kHz to 20 MHz, typical) |
| Tuning Voltage Range | 0 V to VCC (VCXO control input) |
| Operating Temperature | -40 C to +85 C (industrial, code B) |
| Package Type | 6-CLCC ceramic SMD (hermetic) |
| Package Dimensions | 7.0 mm x 5.0 mm x 1.7 mm |
| Mounting Type | Surface Mount |
| MSL Level | MSL3 (per JEDEC J-STD-020) |
| RoHS Status | Compliant (Pb-free ceramic package) |
| Lead-Free | Yes (gold-plated pads) |
| Programmability | Factory programmed only (not field-programmable) |
8N3SV75BC-0099CDI Pin Configuration
| Pin 1 | VC or NC — VCXO control voltage input or no-connect depending on frequency code (consult datasheet for -0099CDI order code) |
| Pin 2 | GND — Ground reference |
| Pin 3 | OUT — LVPECL positive output |
| Pin 4 | /OUT — LVPECL negative (complementary) output |
| Pin 5 | NC or VC — No-connect or VCXO control depending on frequency code (consult datasheet for -0099CDI order code) |
| Pin 6 | VCC — Positive 2.5 V supply |
Typical Applications
8N3SV75BC-0099CDI is suitable for 7 applications: SONET/SDH and OTN Line-Card Reference, FPGA SerDes Reference Clock for 1G/10G Ethernet, High-Speed ADC and DAC Sampling Clock, Test and Measurement Instrumentation Clock, Wireless Base Station Backhaul Timing, Industrial Machine-Vision Camera Pixel Clock, Aerospace Avionics Test Bench Reference.
SONET/SDH and OTN Line-Card Reference
The 8N3SV75BC-0099CDI delivers a 187.5 MHz LVPECL reference suitable for SONET OC-192 / SDH STM-64 framer clocking and OTN OTU-2 transponder designs. Its sub-picosecond RMS jitter (12 kHz to 20 MHz integration band) keeps the data-eye of the serial transceiver well within ITU-T G.8251 jitter tolerance masks. Place the device on the line card with matched-length LVPECL traces to the framer PHY and bypass VCC with a 0.1 uF X7R ceramic within 3 mm. Compared with a discrete PLL+VCO+buffer chain, this part collapses bill-of-material count by replacing three or four ICs.
Recommended
FPGA SerDes Reference Clock for 1G/10G Ethernet
The 8N3SV75BC-0099CDI outputs 187.5 MHz, a common reference for FPGA GTH / GT / GTX / GXB serial transceiver quad PLLs. The FemtoClock architecture supplies LVPECL swing that the FPGA's dedicated clock input pins can consume directly through AC-coupling. Sub-ps jitter minimizes the contribution to total transmitter jitter budget, which is critical for 10GBASE-LR / -ER compliance. Keep the LVPECL pair matched within 5 mil over the entire route to the FPGA to preserve duty-cycle balance.
Recommended
High-Speed ADC and DAC Sampling Clock
Precision ADC and DAC subsystems above 100 MSPS demand a low-jitter sampling reference to preserve dynamic range and signal-to-noise ratio. The 8N3SV75BC-0099CDI's LVPECL output directly clocks 12 to 16-bit pipelined ADCs, where SNR (dBFS) is set primarily by clock jitter: SNR_jitter = 20*log10(1 / (2*pi*f_in*sigma_jitter)). At 187.5 MHz with <1 ps jitter the SNR-jitter component stays well above 70 dB across most Nyquist bins. Terminate LVPECL differentially to the converter's clock input pins.
Recommended
Test and Measurement Instrumentation Clock
Bench-top oscilloscopes, logic analyzers, and arbitrary waveform generators benefit from a clean 187.5 MHz LVPECL timing reference. The 8N3SV75BC-0099CDI provides enough margin for jitter analysis and time-interval measurements below 1 ps RMS. Industrial temperature grade (-40 to +85 C) accommodates lab and production-floor environments. Pair the output to a low-noise LVPECL-to-LVCMOS fanout buffer before driving multiple instrument sub-boards.
Recommended
Wireless Base Station Backhaul Timing
Small-cell and macro-cell backhaul links at 187.5 MHz use this FemtoClock output as the baseband reference for CPRI / OBSAI framer SERDES. The sub-ps jitter maintains the low bit-error-rate required for long CPRI reach over fiber. The 2.5 V single-rail supply aligns with typical base-station 2.5V distribution after intermediate DC-DC conversion. Maintain a guard ring around the 6-CLCC pad pattern and keep the GND pad stitch via array on the package thermal pad region.
Recommended
Industrial Machine-Vision Camera Pixel Clock
187.5 MHz pixel clocks are common in high-resolution line-scan machine-vision cameras. The 8N3SV75BC-0099CDI drives the camera's CMOS sensor and the image processor reference input through matched LVPECL links. Sub-ps jitter improves low-light SNR, helping maintain camera exposure budget in factory-automation deployments. The hermetic 6-CLCC ceramic survives extended industrial temperature cycles better than plastic QFN alternatives.
Recommended
Aerospace Avionics Test Bench Reference
Avionics design benches use a stable 187.5 MHz LVPECL source for radar and MIL-STD-1553 test targets. The 8N3SV75BC-0099CDI is industrial-temperature-rated (not AEC-Q100) and is suitable for ground-test systems where DO-160 environmental qualification is not required. Sub-ps jitter helps validate the radar receiver's noise floor before flight-qualification phases.
Recommended
Recommended Products Summary
Engineering reference data for 8N3SV75BC-0099CDI — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | 8N3SV75AC-0099CDI | 8N3SV75FC-0099CDI | 8N3SV75BC-1999CDI8 |
|---|---|---|---|---|
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics |
| Package | 6-CLCC | 6-CLCC | 6-CLCC | 6-CLCC |
| Output Frequency | 187.5 MHz | 187.5 MHz | 187.5 MHz | different (consult datasheet) |
| Output Type | LVPECL | LVDS | LVDS | LVPECL |
| Supply Voltage | 2.5 V | 2.5 V | 2.5 V | 2.5 V |
| RMS Jitter | < 1 ps | < 1 ps | < 1 ps | < 1 ps |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
| Frequency Programmability | Factory programmed (not field-reconfigurable) | Factory programmed | Factory programmed | Factory programmed |
| AEC-Q100 Qualified | No | No | No | No |
| Unit Price (qty-1) | 38.50 USD | 38.50 USD (typical) | 38.50 USD (typical) | 38.50 USD (typical) |
Key Differentiators
- Factory-programmed 187.5 MHz frequency (vs 8N3SV75BC-1999CDI8)
- LVPECL output swing (800 mV around 1.3 V common-mode) (vs 8N3SV75FC-0099CDI (LVDS variant))
- FemtoClock sub-ps architecture in 6-CLCC ceramic (vs TI CDCE925 PLL synthesizer (TSSOP-16, LVCMOS))
Design Notes
Keep LVPECL traces (OUT and /OUT, pads 3 and 4) matched-length to within 5 mil over the entire route to the receiver. Use a continuous ground reference plane under the pair and stitch ground vias at <= 1/10 lambda of the highest harmonic. Place the 0.1 uF ceramic bypass plus the 10 uF bulk capacitor on VCC within 3 mm of pad 6 to keep internal LDO loop stable.
Do not leave the /OUT pad floating even if only the positive edge is needed: one side unterminated will float the output common-mode and corrupt the duty cycle. Either term both legs to 50 ohm through VCC-1.3V or AC-couple both legs with 0.01 uF capacitors and provide 50 ohm to ground at the receiver side. The datasheet warns that field-programmable alternatives exist in other Renesas families but this 8N3SV75 family is factory-set.
Estimated: the 6-CLCC ceramic package dissipates approximately 0.15 W from the active buffer at 2.5 V supply. With the package thermal pad/pad 2 (GND) the thermal resistance from junction to ambient falls in the 80-100 C/W range, giving a junction rise of 12-15 C above ambient - well within the -40 to +85 C operating limit. No active heatsinking is needed, but the ceramic pad should be soldered to a reasonable copper pour for best performance.
Differential impedance must be held at 100 ohm (50 ohm odd-mode per leg) from 8N3SV75BC-0099CDI to the receiver. LVPECL common-mode is approximately VCC-1.3V so any AC-coupling caps must have very low loss at the operating frequency - typically C0G/NP0 0.01 uF or 0.001 uF sizes work. Maintain a continuous reference plane (no plane splits) under the LVPECL pair for the full route length.
Compliance Information
RoHS compliant per Renesas product page. Industrial temperature -40 to +85 C; AEC-Q100 qualification is not applicable - this part is not for safety-critical automotive applications.
