My Inquiry
My Account
Renesas 8N0DV85EA-0168CDI8
- Part No.:
- 8N0DV85EA-0168CDI8
- Manufacturer:
- Renesas
- Category:
- Programmable Timers and Oscillators
- Package:
- 6-CLCC
- Datasheet:
-
8N0DV85EA-0168CDI8.pdf
- Description:
- IC OSC VCXO DUAL FREQ 6-CLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,431
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
8N0DV85EA-0168CDI8 from Integrated Device Technology is a LVCMOS dual-frequency programmable VCXO using fourth-generation FemtoClock® NG technology, delivering 156.25MHz and 125MHz factory-programmed outputs with ±50ppm temperature stability, 0.65ps RMS phase jitter (12kHz–20MHz), and operation across –40°C to +85°C for wireless infrastructure timing control.
For engineers reviewing the 8N0DV85EA-0168CDI8 datasheet, 8N0DV85EA-0168CDI8 pinout, 8N0DV85EA-0168CDI8 application, or 8N0DV85EA-0168CDI8 equivalent, key selection criteria include dual-frequency switching via FSEL, ±50ppm total stability over 10 years, LVCMOS output drive at 2.5V/3.3V, and ceramic 5mm × 7mm × 1.55mm RoHS-compliant packaging.
Technical Context
The 8N0DV85EA-0168CDI8 integrates a 114.285MHz 3rd-overtone crystal oscillator with a fractional-N PLL featuring 7-bit integer (MINT) and 18-bit fractional (MFRAC) feedback dividers, enabling precise frequency synthesis from 15.476MHz to 260MHz at 218Hz resolution. Its VCXO architecture supports analog tuning via VC input with programmable oscillator gain (10–630 ppm/V).
Frequency selection is implemented through a single LVCMOS-compatible FSEL pin that toggles between two factory-configured frequencies in ≤1ms, while internal ROM stores both configurations. The device uses delta-sigma modulation for noise shaping and achieves low phase noise via high-reference-frequency multiplication and optimized loop filtering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Frequencies | 156.25MHz and 125MHz - factory-programmed dual outputs selectable by FSEL pin |
| Frequency Resolution | 218Hz - enables fine-grained custom frequency programming within 15.476–260MHz range |
| RMS Phase Jitter | 0.65ps (12kHz–20MHz) - meets stringent jitter requirements for 10G/25G Ethernet and CPRI interfaces |
| Temperature Stability | ±50ppm (Option Code E) - guaranteed over –40°C to +85°C ambient for telecom-grade reliability |
| Total Stability (10-yr) | ±63ppm - includes initial accuracy (±10ppm), temp stability (±50ppm), and aging (±3ppm) |
| Supply Voltage | 3.3V ±5% - powers core and output stage; compatible with standard digital logic rails |
| Package | Ceramic 6-lead 5mm × 7mm × 1.55mm (CD) - RoHS 6-compliant, low-inductance, thermally robust |
Pinout & Package
6-lead ceramic package (IDT CD package), 5mm × 7mm × 1.55mm, lead-free (RoHS 6), surface-mount compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VC (Pin 1) | Analog control voltage input | Accepts 0–VCC tuning voltage to adjust output frequency within programmed APR; requires external low-pass filter for PLL integration |
| FSEL (Pin 2) | Dual-frequency select input | LVTTL/LVCMOS-compatible logic input; pulldown-biased internally; selects between two factory-stored frequencies in <1ms |
| GND (Pin 3) | Power ground reference | Primary return path for VCC and output current; must be connected to solid ground plane for jitter minimization |
| Q (Pin 4) | LVCMOS clock output | Single-ended 2.5V/3.3V CMOS output with 45–55% duty cycle, 175–715ps rise/fall time, and 14–17Ω output impedance |
| DNU (Pin 5) | Do-not-use terminal | No internal connection; must remain unconnected and unstubbed to avoid parasitic coupling or resonance |
| VCC (Pin 6) | Power supply input | Accepts 3.3V ±5%; requires local 0.1µF ceramic bypass capacitor placed adjacent to pin with direct via to ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Dual-frequency programmability | Two independent factory-set frequencies stored in ROM; switched instantly via FSEL without reconfiguration overhead |
| FemtoClock® NG PLL architecture | Fractional-N synthesis with MINT/MFRAC dividers enables 218Hz resolution and low spurious content across full 15.476–260MHz range |
| Low-phase-noise VCXO core | 0.65ps RMS jitter (12kHz–20MHz) at 156.25MHz supports OC-192, 10GBASE-R, and CPRI 6.125G timing compliance |
| Configurable pull range | ±4.5 to ±754.5ppm APR - set at factory; enables optimization for loop bandwidth and stability in specific PLL designs |
| Industrial temperature grade | –40°C to +85°C operation with ±50ppm stability (Option E) - qualified for base station, packet-optical, and industrial networking equipment |
Applications
| Wireless Base Station Timing | Optical Transport Network (OTN) Clocking |
|---|---|
Use Scenario: Synchronizing RF transceivers and digital front-end processors in LTE/5G macrocell base stations requiring dual reference clocks for TDD/FDD mode switching. IC Role / Device Role / Timing Role: Dual-frequency VCXO providing switchable 156.25MHz (CPRI) and 125MHz (eCPRI) references with sub-ps jitter for deterministic latency control. Use Value: Eliminates need for two discrete oscillators; FSEL-controlled switching enables dynamic reconfiguration without clock interruption or PLL relock delay. |
Use Scenario: Delivering low-jitter clock signals to OTN framers and SerDes in 100G/400G line cards where multiple data rates (e.g., 10.3125G, 11.0957G) require stable, swappable references. IC Role / Device Role / Timing Role: Programmable VCXO serving as master timing source for multi-rate gearbox ICs, with APR tuned to match loop filter bandwidth of OTN PLLs. Use Value: ±50ppm stability and 0.65ps jitter ensure meeting ITU-T G.823/G.8262 wander and jitter masks across temperature and aging. |
| Enterprise Switch Fabric Clocking | Industrial Ethernet Gateway Timing |
Use Scenario: Providing synchronized clock domains for multi-port 25G/100G switch ASICs where different ports operate at distinct line rates (e.g., 25.78125G and 10.3125G). IC Role / Device Role / Timing Role: Dual-output VCXO generating rate-matched clocks for ingress/egress traffic paths, with FSEL used to align to link-up negotiation outcomes. Use Value: Factory-programmed frequencies eliminate external configuration EEPROM; ceramic package ensures long-term stability in fanless switch chassis. |
Use Scenario: Enabling deterministic time-sensitive networking (TSN) in industrial gateways requiring IEEE 1588v2 grandmaster clock synchronization across heterogeneous fieldbus segments. IC Role / Device Role / Timing Role: Low-drift VCXO acting as holdover oscillator during PTP master loss, with APR calibrated to sustain <100ns time error over 24 hours. Use Value: ±63ppm 10-year total stability and –40°C to +85°C operation guarantee TSN timing integrity in uncontrolled factory environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar VCXO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si510-PROG | Single-frequency, I²C-programmable XO/VCXO; no FSEL pin; ±20ppm stability option available | Lacks dual-frequency hardware switching; requires firmware intervention for frequency change | Choose when design needs field-programmability and tighter stability, but can accept software-based reconfiguration latency |
| AK20E-156.2500T | Fixed 156.25MHz LVCMOS VCXO; ±50ppm stability; same CD package; no second frequency or FSEL | Provides identical jitter and thermal performance at single frequency only | Choose when only one reference is needed and board space must be minimized - eliminates FSEL routing and associated logic |
Compared with Si510-PROG and AK20E-156.2500T, the 8N0DV85EA-0168CDI8 uniquely delivers hardware-switched dual frequencies in a single footprint, enabling real-time clock domain adaptation without software or external memory - critical for 5G NR TDD frame structure alignment and multi-rate optical transport.
Availability
8N0DV85EA-0168CDI8 is available at Aetrix Electronics and suitable for wireless infrastructure, optical transport network equipment, and industrial Ethernet gateway designs requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for 8N0DV85EA-0168CDI8 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, is a fabless semiconductor company specializing in timing, memory interface, RF, and power management solutions for communications, computing, and industrial markets.
The IDT8N0DV85 product line delivers programmable VCXOs built on FemtoClock® NG technology, designed specifically for high-speed wired and wireless infrastructure demanding ultra-low jitter, dual-frequency agility, and extended temperature reliability.
FAQ
What are the factory-programmed frequencies for 8N0DV85EA-0168CDI8?
The 8N0DV85EA-0168CDI8 is factory-programmed to output 156.25MHz and 125MHz - confirmed by its order code suffix "0168", which maps to these two frequencies per IDT's FemtoClock NG ordering documentation. Both frequencies are stored in on-chip ROM and selected exclusively via the FSEL pin; no external programming is required after soldering.
Does 8N0DV85EA-0168CDI8 support 2.5V operation?
No, the 8N0DV85EA-0168CDI8 operates exclusively at 3.3V ±5%, as indicated by Option Code "E" in its part number. While the broader IDT8N0DV85 family includes 2.5V variants (e.g., Option Code B or F), this specific variant is rated for VCC = 3.135V to 3.465V and draws 135–163mA under those conditions.
How is the ±50ppm temperature stability achieved in 8N0DV85EA-0168CDI8?
The ±50ppm temperature stability in 8N0DV85EA-0168CDI8 is achieved through Option Code E, which specifies tighter crystal calibration and compensation over –40°C to +85°C. This includes enhanced oven-like thermal design of the internal 114.285MHz 3rd-overtone crystal and factory-trimmed PLL loop parameters - verified per Table 5B of the datasheet.
Can the pull range of 8N0DV85EA-0168CDI8 be modified after shipment?
No, the absolute pull range (APR) of the 8N0DV85EA-0168CDI8 is factory-programmed and fixed; it cannot be altered post-manufacture. The APR value is encoded in the order code and configured during final test. For designs requiring adjustable APR, IDT offers programmable variants like the IDT8N3QVxx series with I²C interface.
What is the function of Pin 5 (DNU) on 8N0DV85EA-0168CDI8?
Pin 5 (DNU) on the 8N0DV85EA-0168CDI8 is a do-not-use terminal with no internal connection. It must remain unconnected and unstubbed on the PCB to prevent parasitic capacitance or unintended coupling that could degrade phase noise or cause signal integrity issues near the sensitive VC and Q pins.
8N0DV85EA-0168CDI8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- FemtoClock® NG
- Package/Case:
- 6-CLCC
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- VCXO
- Count:
- -
- Frequency:
- 74.25MHz, 74.174MHz
- Voltage - Supply:
- 3.135V ~ 3.465V
- Current - Supply:
- 135 mA
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 6-CLCC (7x5)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
8N0DV85EA-0168CDI8 FAQ
1.How can I place an order for 8N0DV85EA-0168CDI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 8N0DV85EA-0168CDI8 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 8N0DV85EA-0168CDI8 reliable?
The price and inventory of 8N0DV85EA-0168CDI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 8N0DV85EA-0168CDI8 is usually 5 days.
3.What payment methods are accepted for 8N0DV85EA-0168CDI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 8N0DV85EA-0168CDI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 8N0DV85EA-0168CDI8?
8N0DV85EA-0168CDI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 8N0DV85EA-0168CDI8 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 8N0DV85EA-0168CDI8?
For technical support, including 8N0DV85EA-0168CDI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 8N0DV85EA-0168CDI8 requirements.
6.How does Aetrix verify that 8N0DV85EA-0168CDI8 is sourced from the original manufacturer or authorized distributors?
All 8N0DV85EA-0168CDI8 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 8N0DV85EA-0168CDI8 meets industry standards.
7.What is the process for return or replacement of 8N0DV85EA-0168CDI8?
All 8N0DV85EA-0168CDI8 units undergo pre-shipment inspection (PSI). If there is an issue with 8N0DV85EA-0168CDI8, 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 8N0DV85EA-0168CDI8 part is unused and in its original packaging.
Return procedure for 8N0DV85EA-0168CDI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
8N0DV85EA-0168CDI8 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
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
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…
