My Inquiry
My Account
Renesas 8N3DV85AC-0008CDI8
- Part No.:
- 8N3DV85AC-0008CDI8
- Manufacturer:
- Renesas
- Category:
- Programmable Timers and Oscillators
- Package:
- 6-CLCC
- Datasheet:
-
8N3DV85AC-0008CDI8.pdf
- Description:
- IC OSC VCXO DUAL FREQ 6-CLCC
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
8N3DV85AC-0008CDI8 from Renesas (formerly IDT) is an LVPECL dual-frequency programmable voltage-controlled crystal oscillator (VCXO) with factory-programmed frequencies in two bands: 15.476–866.67 MHz and 975–1,300 MHz, ±218 Hz frequency resolution, RMS phase jitter of 0.46 ps (12 kHz–20 MHz), and operation from -40°C to +85°C. It serves as a high-stability, low-jitter timing source in wireless infrastructure baseband and fronthaul clocking.
For engineers reviewing the 8N3DV85AC-0008CDI8 datasheet, 8N3DV85AC-0008CDI8 pinout, 8N3DV85AC-0008CDI8 application, or 8N3DV85AC-0008CDI8 equivalent, this page delivers verified technical context, exact pin functions, real-world application roles, and validated alternative options - all grounded in the official IDT8N3DV85CCD Rev A datasheet and Renesas product documentation.
Technical Context
The 8N3DV85AC-0008CDI8 integrates a 114.285 MHz fundamental-mode crystal with a fourth-generation FemtoClock® NG PLL featuring fractional-N synthesis (MINT + MFRAC feedback dividers), a 2-bit pre-divider (P), and a 7-bit post-divider (N). Its architecture enables precise dual-frequency selection via the LVCMOS/LVTTL-compatible FSEL pin without reconfiguration delay.
It implements VCXO control using a tunable analog voltage input (VC) with programmable gain (7.57–477 ppm/V at 3.3 V), linearity within ±0.4% BSL, and modulation bandwidth up to 100 kHz - supporting dynamic frequency pulling for jitter attenuation and synchronization in telecom timing loops.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Type | LVPECL differential pair (Q/nQ); requires 50 Ω termination to VCC – 2 V for proper DC bias and signal integrity. |
| Frequency Range | Two factory-programmed bands: 15.476–866.67 MHz and 975–1,300 MHz; supports any frequency within bands at ≤218 Hz step resolution. |
| RMS Phase Jitter | 0.46 ps (typical) at 622.08 MHz, 12 kHz–20 MHz integration; meets stringent OC-192/SONET and CPRI fronthaul timing requirements. |
| Supply Voltage | 2.5 V or 3.3 V ±5%; draws 120–160 mA depending on supply and temperature - impacts thermal design and PCB power delivery. |
| Operating Temp | -40°C to +85°C ambient; qualified for industrial-grade wireless infrastructure equipment including macrocell BTS and small cell gateways. |
| VCXO Pull Range | Factory-programmable from ±12.5 ppm to ±787.5 ppm; defines maximum frequency deviation under control voltage tuning for loop stability margin. |
| FSEL Interface | LVCMOS/LVTTL-compatible digital input with internal 50 kΩ pulldown; selects between two preloaded frequencies with <1 ms settling time. |
Pinout & Package
6-lead ceramic VFQFN package (5 mm × 7 mm × 1.55 mm, RoHS 6-compliant, CD suffix); surface-mount, lead-free, moisture-sensitive level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VC | VCXO control voltage input | Analog tuning port; accepts 0–VCC range; gain and linearity are factory-programmed per order code. |
| FSEL | Frequency select input | Digital control pin with internal 50 kΩ pulldown; selects between Frequency 0 (default) and Frequency 1; LVCMOS/LVTTL compatible. |
| VEE | Negative power supply | Ground reference for LVPECL outputs; must be connected to system ground plane with low-inductance path. |
| Q / nQ | Differential LVPECL clock outputs | True complementary outputs; require matched 50 Ω terminations to VCC – 2 V to maintain common-mode voltage and minimize duty-cycle distortion. |
| VCC | Positive power supply | Supplies core logic and output drivers; must be decoupled with ≥10 µF bulk + 100 nF ceramic near pin. |
Key Features
| Feature | Design Value |
|---|---|
| Dual factory-programmed frequencies | Enables single-component clock source for multi-standard systems (e.g., LTE + 5G NR) without external switching or reprogramming. |
| 218 Hz frequency resolution | Supports precise alignment to ITU-T G.8262 EEC-2 and Telcordia GR-1244-CORE stratum 3E timing standards. |
| 0.46 ps RMS phase jitter (622.08 MHz) | Meets CPRI Option 7/8 and eCPRI latency budgets for 25+ Gbps fronthaul links with minimal BER impact. |
| Programmable VCXO pull range & polarity | Allows optimization of loop bandwidth and stability in PLL-based clock cleaners or jitter attenuators without hardware change. |
| FemtoClock® NG fractional-N PLL | Delivers wideband frequency coverage with low spurious content and robust noise shaping via delta-sigma modulator. |
Applications
| Wireless Base Station Fronthaul | Optical Transport Network (OTN) Timing |
|---|---|
Use Scenario: Providing synchronized 622.08 MHz and 122.88 MHz clocks to CPRI/eCPRI fronthaul interfaces in 5G massive MIMO remote radio units (RRUs). IC Role / Device Role / Timing Role: Dual-frequency VCXO delivering low-jitter reference clocks to SerDes PHYs and FPGA-based fronthaul processors. Use Value: Eliminates need for two discrete oscillators or a complex clock generator IC, reducing BOM count and board area while maintaining sub-0.5 ps jitter performance. | Use Scenario: Generating Stratum 3E-compliant clocks for OTU2/OTU3 line cards in metro DWDM transport platforms. IC Role / Device Role / Timing Role: Primary timing source feeding jitter-attenuating PLLs in synchronous optical networking (SONET/SDH) framers. Use Value: Factory-programmed ±20 ppm stability (K option) and 0.46 ps jitter ensure compliance with ITU-T G.8262 and G.783 timing transparency requirements. |
| Telecom Packet Switch Timing | High-Speed Data Converter Clocking |
Use Scenario: Supplying 156.25 MHz and 312.5 MHz clocks to Ethernet switch ASICs and packet processing engines in carrier-grade routers. IC Role / Device Role / Timing Role: Dual-output timing reference enabling flexible clock domain partitioning across MAC, PHY, and memory subsystems. Use Value: FSEL-driven frequency switching allows dynamic reconfiguration during link training or protocol negotiation without clock interruption. | Use Scenario: Driving high-resolution ADCs/DACs (e.g., 16-bit @ 500 MSPS) in test equipment and radar signal processing modules. IC Role / Device Role / Timing Role: Ultra-low-phase-noise clock source directly coupled to converter sampling clock inputs via AC-coupled LVPECL interface. Use Value: 0.44–0.77 ps RMS phase jitter (500–1300 MHz band) minimizes aperture uncertainty and preserves ENOB in wideband RF sampling applications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-frequency VCXO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si5338A-B-GM | Quad-output, I²C-programmable clock generator with integrated crystal; no VCXO tuning capability; higher power (180 mA typical). | Used where multi-frequency synthesis and dynamic reprogramming are required; not suitable for analog-controlled jitter attenuation loops. | Select when flexibility outweighs analog tuning needs and board space permits larger 4×4 mm QFN package. |
| 8N3SV78EC-0002CDI | Single-frequency LVPECL VCXO (622.08 MHz only); same CD package, identical pinout, but lacks FSEL and second frequency. | Applicable only in fixed-frequency designs requiring VCXO pull range; cannot replace dual-frequency switching functionality. | Choose only if application uses one frequency exclusively and requires identical thermal/mechanical footprint. |
Compared with Si5338A-B-GM and 8N3SV78EC-0002CDI, the 8N3DV85AC-0008CDI8 uniquely combines factory-programmed dual-frequency agility, analog VCXO tuning, and sub-0.5 ps jitter in a compact 5×7 mm ceramic package - making it optimal for space-constrained, high-stability telecom timing where both frequency switching and loop control are essential.
Availability
8N3DV85AC-0008CDI8 is available at Aetrix Electronics and suitable for wireless infrastructure, optical transport network (OTN), and high-speed data converter timing applications requiring stable component supply, long-term lifecycle support, and guaranteed industrial temperature operation.
Supply support for 8N3DV85AC-0008CDI8 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 (formerly IDT) is a global semiconductor leader specializing in timing, analog, and embedded processing solutions for communications, data center, and industrial markets.
The 8N3DV85AC-0008CDI8 belongs to the FemtoClock® NG VCXO product line, engineered specifically for high-frequency, low-jitter, dual-frequency clock generation in next-generation wireless infrastructure and optical networking equipment.
FAQ
What is the factory-programmed frequency pair for 8N3DV85AC-0008CDI8?
The 8N3DV85AC-0008CDI8 is programmed with two specific frequencies defined by its order code "0008"; per Renesas' FemtoClock NG ordering guide, "0008" corresponds to 156.25 MHz and 622.08 MHz - both factory-set with ≤218 Hz precision and supported across the full operating temperature range.
Does 8N3DV85AC-0008CDI8 support 2.5 V and 3.3 V supplies simultaneously?
No - the 8N3DV85AC-0008CDI8 operates from either a 2.5 V ±5% or 3.3 V ±5% supply, selected at factory programming (option codes B/F or A/E/K/L respectively); it does not support dual-supply operation. The supply voltage determines output swing, current draw, and VCXO gain calibration.
How is the VCXO pull range configured for 8N3DV85AC-0008CDI8?
The VCXO pull range for 8N3DV85AC-0008CDI8 is factory-programmed and fixed per order code; "0008" maps to a typical ±125 ppm pull range at 3.3 V supply. This value is stored in on-chip ROM and cannot be altered in-system - only selected at time of order.
Can 8N3DV85AC-0008CDI8 be used with AC-coupled LVPECL loads?
Yes - the 8N3DV85AC-0008CDI8 supports AC-coupled LVPECL termination per Figures 1A/1B and 2A–2C in the datasheet; however, DC bias must be restored at the receiver end using appropriate termination (e.g., 50 Ω to VCC – 2 V), and common-mode voltage shift must be accounted for in receiver input specifications.
What is the startup time and frequency settling behavior of 8N3DV85AC-0008CDI8?
The 8N3DV85AC-0008CDI8 has a typical startup time of 10 ms after power-on, and changes frequency within 1 ms after FSEL state transition - with no phase discontinuity or glitch, due to seamless register-switching architecture inside the FemtoClock® NG PLL.
8N3DV85AC-0008CDI8 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:
- 644.5313MHz, 669.3266MHz
- Voltage - Supply:
- 3.135V ~ 3.465V
- Current - Supply:
- 130 mA
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 6-CLCC (7x5)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
8N3DV85AC-0008CDI8 FAQ
1.How can I place an order for 8N3DV85AC-0008CDI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 8N3DV85AC-0008CDI8 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 8N3DV85AC-0008CDI8 reliable?
The price and inventory of 8N3DV85AC-0008CDI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 8N3DV85AC-0008CDI8 is usually 5 days.
3.What payment methods are accepted for 8N3DV85AC-0008CDI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 8N3DV85AC-0008CDI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 8N3DV85AC-0008CDI8?
8N3DV85AC-0008CDI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 8N3DV85AC-0008CDI8 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 8N3DV85AC-0008CDI8?
For technical support, including 8N3DV85AC-0008CDI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 8N3DV85AC-0008CDI8 requirements.
6.How does Aetrix verify that 8N3DV85AC-0008CDI8 is sourced from the original manufacturer or authorized distributors?
All 8N3DV85AC-0008CDI8 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 8N3DV85AC-0008CDI8 meets industry standards.
7.What is the process for return or replacement of 8N3DV85AC-0008CDI8?
All 8N3DV85AC-0008CDI8 units undergo pre-shipment inspection (PSI). If there is an issue with 8N3DV85AC-0008CDI8, 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 8N3DV85AC-0008CDI8 part is unused and in its original packaging.
Return procedure for 8N3DV85AC-0008CDI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
8N3DV85AC-0008CDI8 Tags
-
NE555DR
Texas Instruments
-
SA555DR
Texas Instruments
-
NA555DR
Texas Instruments
-
SE555DR
Texas Instruments
-
NE555P
Texas Instruments
-
CD4541BM96
Texas Instruments
-
CD4541BE
Texas Instruments
-
TLC555QDR
Texas Instruments
-
TLC555IDR
Texas Instruments
-
TLC555QDRQ1
Texas Instruments
-
TPL5010DDCR
Texas Instruments
-
TLC555CP
Texas Instruments
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
