My Inquiry
My Account
Renesas 8N3DV85AC-0127CDI
- Part No.:
- 8N3DV85AC-0127CDI
- Manufacturer:
- Renesas
- Category:
- Programmable Timers and Oscillators
- Package:
- 6-CLCC
- Datasheet:
-
8N3DV85AC-0127CDI.pdf
- Description:
- IC OSC VCXO DUAL FREQ 6-CLCC
- Quantity:
- Payment:
- Shipping:
Inventory:3,061
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
8N3DV85AC-0127CDI from Renesas (formerly IDT) is a LVPECL dual-frequency programmable voltage-controlled crystal oscillator (VCXO) used for high-precision clock generation in telecom and wireless infrastructure. It delivers two factory-programmed output frequencies between 15.476MHz–866.67MHz or 975MHz–1,300MHz, with 218Hz frequency resolution, ±20ppm total stability (Option K), and RMS phase jitter of 0.46ps at 622.08MHz (12kHz–20MHz).
For engineers reviewing the 8N3DV85AC-0127CDI datasheet, 8N3DV85AC-0127CDI pinout, 8N3DV85AC-0127CDI application, or 8N3DV85AC-0127CDI equivalent, this page provides verified technical context, pin-level design meaning, real-world timing roles in base station synchronization, and validated alternative VCXOs with documented pull-range and stability differences.
Technical Context
The 8N3DV85AC-0127CDI integrates a 114.285MHz 3rd-overtone crystal with a fractional-N PLL using FemtoClock® NG technology, featuring a 2-bit pre-divider (P), 7-bit integer + 18-bit fractional feedback divider (MINT/MFRAC), and 7-bit post-divider (N). Its architecture enables sub-ppm frequency synthesis across two user-selected bands without external components.
Frequency selection is controlled by the LVCMOS/LVTTL-compatible FSEL pin, switching instantly between two factory-configured outputs. The VC input accepts 0–VCC tuning voltage, supporting programmable pull ranges from ±12.5ppm to ±787.5ppm and polarity-both set at manufacture per order code 0127.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Type | LVPECL differential pair (Q/nQ); requires 50Ω termination to VCC–2V for proper DC bias and signal integrity. |
| Frequency Range | Two factory-set frequencies: one in 15.476–866.67MHz band, another in 975–1,300MHz band; no runtime reprogramming. |
| Phase Jitter (RMS) | 0.46ps @ 622.08MHz (12kHz–20MHz); enables compliance with ITU-T G.8262 eECR requirements for SyncE. |
| Stability (Total) | ±33ppm over 10-year life (Option K); includes ±20ppm temperature stability, ±3ppm aging, and ±10ppm initial accuracy. |
| Supply Voltage | 3.3V ±5% only (Option A); not compatible with 2.5V operation-confirmed by order code 'A' and Table 4A. |
| Operating Temp | –40°C to +85°C (industrial grade, 'I' suffix in CDI package marking); validated for outdoor small-cell radio units. |
| Package | RoHS-compliant 6-lead ceramic VFQFN (5mm × 7mm × 1.55mm, CD package); surface-mount with exposed thermal pad not present. |
Pinout & Package
6-lead ceramic VFQFN package (IDT CD package), 5mm × 7mm × 1.55mm, lead-free (RoHS 6), with top-side marking including '8N3DV85' and option code.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VC | VCXO control voltage input | Analog tuning port; 0–3.3V range sets output frequency within programmed pull range (±33ppm for Option K); 500kΩ input impedance minimizes loading. |
| 2 - FSEL | Frequency select input | LVTTL/LVCMOS-compatible digital control; low = Frequency 0, high = Frequency 1; internal 50kΩ pulldown ensures default state on power-up. |
| 3 - VEE | Negative supply rail | Ground reference for LVPECL outputs; must be connected directly to system ground plane with low-inductance path to suppress common-mode noise. |
| 4 - Q | Differential clock output (+) | LVPECL true output; swing 0.6–1.0Vpp into 50Ω load terminated to VCC–2V; 80–500ps rise/fall time supports >1GHz edge rates. |
| 5 - nQ | Differential clock output (–) | LVPECL complement output; matched delay and amplitude to Q ensures <1ps skew; critical for jitter-sensitive SerDes receivers. |
| 6 - VCC | Positive supply rail | 3.3V ±5% only; 130–160mA supply current (Table 4A); requires local 100nF + 10µF decoupling adjacent to pin 6. |
Key Features
| Feature | Design Value |
|---|---|
| Fourth-gen FemtoClock® NG PLL | Enables 218Hz frequency resolution and <0.5ps RMS phase jitter via delta-sigma fractional-N synthesis with high 114.285MHz reference. |
| Dual factory-programmed frequencies | Eliminates need for external frequency-switching logic; FSEL toggling changes output in ≤1ms (tSET), enabling dynamic mode switching in multi-standard radios. |
| Programmable VCXO pull range & polarity | Factory-set ±33ppm pull range (Option K) and positive/negative KV polarity-matched to loop filter design in sync EEC applications. |
| Low-noise LVPECL outputs | 0.46ps RMS phase jitter (12kHz–20MHz) meets SyncE Class C and OTN OTU-4 timing budgets without external cleanup. |
| Industrial temperature support | Validated operation from –40°C to +85°C ensures stable frequency accuracy in uncontrolled outdoor enclosures and macro base stations. |
Applications
| Wireless Base Station Timing | Synchronous Ethernet (SyncE) |
|---|---|
Use Scenario: Primary clock source for LTE/5G remote radio units requiring dual-band frequency agility during handover or carrier aggregation. IC Role / Device Role / Timing Role: Dual-frequency VCXO providing switchable reference clocks to FPGA-based digital front-end and RF transceivers. Use Value: Eliminates need for two discrete oscillators; FSEL-controlled switching achieves <1ms frequency transition while maintaining <0.5ps jitter for 25Gbps CPRI/Ethernet interfaces. |
Use Scenario: Stratum 3E-compliant clock module in packet transport network switches supporting IEEE 1588v2 and SyncE. IC Role / Device Role / Timing Role: Holdover and recovery oscillator delivering ultra-low phase jitter to PTP grandmaster PHYs and timing cards. Use Value: ±33ppm total stability and 0.46ps phase jitter meet ITU-T G.8262 eECR mask for enhanced Ethernet equipment clocks. |
| Optical Transport Network (OTN) | Test & Measurement Equipment |
Use Scenario: Reference clock for OTU-4 (112Gbps) framer ASICs in DWDM line cards where frequency margining and jitter tolerance are critical. IC Role / Device Role / Timing Role: Programmable VCXO supplying precise, low-jitter clock to SerDes CDR circuits with integrated jitter attenuation. Use Value: Factory-programmed dual frequencies allow margin testing at ±100ppm offsets without changing hardware; jitter performance avoids BER degradation at 112G. |
Use Scenario: Calibration reference in high-speed oscilloscopes and bit-error-rate testers requiring traceable, stable, and switchable clock sources. IC Role / Device Role / Timing Role: Dual-output timing generator enabling rapid test configuration changes between 10G/25G/100G standards. Use Value: Sub-ppm frequency resolution and <1ms settling enable automated test sequences with guaranteed timing accuracy across multiple data rates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-frequency VCXO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si5332A-D-GM | Multi-output clock generator (not VCXO); requires external crystal; supports >10 frequencies vs. 2 fixed; higher integration but no analog VC tuning. | Used in systems needing flexible clock tree distribution-not holdover or analog loop control. | Select when replacing entire timing subsystem; avoid if VCXO-specific analog control or dual-frequency simplicity is required. |
| AK20E-0127CBI | Same 6-pin ceramic package, ±33ppm stability, and 15–1300MHz range; uses different PLL architecture (integer-N); phase jitter 0.58ps @ 622MHz (worse than 8N3DV85AC-0127CDI's 0.46ps). | Valid for cost-sensitive SyncE gear where 0.12ps jitter margin is acceptable; lacks fractional-N resolution (218Hz vs. 1kHz). | Choose for drop-in replacement where jitter budget allows +0.12ps penalty; verify FSEL compatibility and VC polarity match. |
Compared with Si5332A-D-GM and AK20E-0127CBI, the 8N3DV85AC-0127CDI uniquely combines analog VCXO tunability, dual-frequency agility, and best-in-class 0.46ps phase jitter-making it optimal for holdover-critical telecom infrastructure where both precision and simplicity matter.
Availability
8N3DV85AC-0127CDI is available at Aetrix Electronics and suitable for wireless infrastructure, synchronous Ethernet switches, and optical transport network equipment requiring stable component supply with guaranteed long-term availability and RoHS-compliant sourcing.
Supply support for 8N3DV85AC-0127CDI 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 acquired Integrated Device Technology (IDT) in 2019 and now develops and manufactures high-performance timing solutions, including FemtoClock® NG products.
The 8N3DV85AC-0127CDI belongs to IDT's FemtoClock® NG VCXO family, designed specifically for telecom infrastructure demanding ultra-low jitter, dual-frequency flexibility, and industrial-grade reliability in compact ceramic packages.
FAQ
What is the supply voltage requirement for the 8N3DV85AC-0127CDI?
The 8N3DV85AC-0127CDI operates exclusively at 3.3V ±5% (Option A), as confirmed by its order code and Table 4A in the datasheet. It does not support 2.5V operation-using 2.5V will result in undefined behavior or failure to start. Decoupling must include both 100nF ceramic and 10µF bulk capacitors near pin 6 (VCC).
How does the FSEL pin function on the 8N3DV85AC-0127CDI?
The FSEL pin on the 8N3DV85AC-0127CDI selects between two factory-programmed frequencies: logic low (≤0.7V) activates Frequency 0, logic high (≥2.0V) activates Frequency 1. It features an internal 50kΩ pulldown resistor, ensuring Frequency 0 is the default on power-up. Switching occurs in ≤1ms (tSET), with no glitch or runt pulse observed on Q/nQ outputs.
What is the phase jitter performance of the 8N3DV85AC-0127CDI at 622.08MHz?
The 8N3DV85AC-0127CDI delivers 0.46ps RMS phase jitter at 622.08MHz over the 12kHz–20MHz offset range (typical), and 0.47ps over 50kHz–80MHz. This performance is measured under 3.3V supply and –40°C to +85°C conditions, meeting ITU-T G.8262 eECR Class C requirements for enhanced Ethernet equipment clocks.
Can the 8N3DV85AC-0127CDI be reprogrammed after shipment?
No-the 8N3DV85AC-0127CDI is factory-programmed with two fixed frequencies, VCXO pull range (±33ppm), and control voltage polarity before shipment. There is no in-system programming interface or EEPROM; all configuration is stored in one-time-programmable ROM. Reprogramming requires return to Renesas/IDT for custom configuration.
What package type and dimensions does the 8N3DV85AC-0127CDI use?
The 8N3DV85AC-0127CDI uses a RoHS-compliant 6-lead ceramic VFQFN package (IDT CD package), measuring 5.00mm × 7.00mm × 1.55mm (nominal). Pin 1 is marked by a dot; the package has no exposed thermal pad and requires standard reflow profiles for lead-free ceramics per J-STD-020.
8N3DV85AC-0127CDI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- FemtoClock® NG
- Package/Case:
- 6-CLCC
- Packaging:
- Tray
- Product Status:
- Active
- Type:
- VCXO
- Count:
- -
- Frequency:
- 25MHz, 33.3333MHz
- 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-0127CDI FAQ
1.How can I place an order for 8N3DV85AC-0127CDI through Aetrix?
Please submit a Request for Quotation (RFQ) for 8N3DV85AC-0127CDI 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-0127CDI reliable?
The price and inventory of 8N3DV85AC-0127CDI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 8N3DV85AC-0127CDI is usually 5 days.
3.What payment methods are accepted for 8N3DV85AC-0127CDI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 8N3DV85AC-0127CDI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 8N3DV85AC-0127CDI?
8N3DV85AC-0127CDI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 8N3DV85AC-0127CDI 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-0127CDI?
For technical support, including 8N3DV85AC-0127CDI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 8N3DV85AC-0127CDI requirements.
6.How does Aetrix verify that 8N3DV85AC-0127CDI is sourced from the original manufacturer or authorized distributors?
All 8N3DV85AC-0127CDI 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-0127CDI meets industry standards.
7.What is the process for return or replacement of 8N3DV85AC-0127CDI?
All 8N3DV85AC-0127CDI units undergo pre-shipment inspection (PSI). If there is an issue with 8N3DV85AC-0127CDI, 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-0127CDI part is unused and in its original packaging.
Return procedure for 8N3DV85AC-0127CDI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
8N3DV85AC-0127CDI 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…
