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Home > Products > Integrated Circuits (ICs) > Clock/Timing > Programmable Timers and Oscillators

Renesas 8N3DV85KC-0201CDI

Name: 8N3DV85KC-0201CDI
Brand: Renesas
SKU: 8N3DV85KC-0201CDI
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 8N3DV85KC-0201CDI

Manufacturer:: Renesas

Category:: Programmable Timers and Oscillators

Package:: 6-CLCC

Datasheet:: 8N3DV85KC-0201CDI.pdf

Description:: IC OSC VCXO DUAL FREQ 6-CLCC

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Product details

Overview

8N3DV85KC-0201CDI 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 15.476 MHz–866.67 MHz or 975 MHz–1,300 MHz, with 218 Hz frequency resolution, ±20 ppm total stability (Option K), and RMS phase jitter of 0.46 ps (12 kHz–20 MHz at 622.08 MHz).

For engineers reviewing the 8N3DV85KC-0201CDI datasheet, 8N3DV85KC-0201CDI pinout, 8N3DV85KC-0201CDI application, or 8N3DV85KC-0201CDI equivalent, this page provides verified technical context, pin-level design meaning, real-world application mappings, and validated alternative options - all grounded in the official IDT8N3DV85CCD Rev A datasheet and Renesas ordering documentation.

Technical Context

The 8N3DV85KC-0201CDI integrates a 114.285 MHz fundamental-mode crystal with a fourth-generation FemtoClock® NG PLL featuring fractional-N synthesis (MINT + MFRAC), a 2-bit pre-divider (P), and a 7-bit post-divider (N). Its architecture enables immediate frequency switching via the FSEL pin without relocking delay (settling time ≤1 ms).

It operates from a single 3.3 V supply (±5%), supports LVCMOS/LVTTL-compatible FSEL control, and uses internal pulldown resistors (50 kΩ) on input pins. The VCXO pull range is factory-programmed to ±20 ppm (Option K), with oscillator gain (KV) of 7.57–477.27 ppm/V depending on configuration and supply voltage.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Type	LVPECL differential pair (Q/nQ), terminated into 50 Ω to VCC – 2 V
Frequency Range	Two factory-set frequencies: one in 15.476–866.67 MHz band, another in 975–1,300 MHz band
Frequency Resolution	218 Hz or better - enables precise alignment to SONET/OTN, CPRI, and Ethernet reference clocks
RMS Phase Jitter	0.46 ps (12 kHz–20 MHz integration, 622.08 MHz output) - meets OC-192 and 10G Ethernet timing budgets
Supply Voltage	3.3 V ±5% - compatible with standard telecom power rails; no 2.5 V support for this variant (K = 3.3 V option)
Operating Temp	–40°C to +85°C - qualified for industrial ambient conditions in base stations and packet switches
Total Stability	±33 ppm (10-year life, Option K) - includes initial accuracy, temp drift, and aging; critical for long-life deployments

Pinout & Package

6-lead ceramic VFQFN package (5 mm × 7 mm × 1.55 mm, RoHS 6-compliant, CD suffix), surface-mount, lead-free, with exposed thermal pad not electrically connected.

Pin/Terminal	Circuit Role	Design Meaning
1 - VC	VCXO control voltage input	Analog tuning port; accepts 0–VCC range; sets output frequency within ±20 ppm pull range (K option)
2 - FSEL	Frequency select input	LVTTL/LVCMOS-compatible; low = Frequency 0, high = Frequency 1; internal 50 kΩ pulldown ensures default selection
3 - VEE	Negative power supply	Ground reference for LVPECL outputs; must be connected to system GND (not floating)
4 - Q	Differential clock output (+)	LVPECL true output; requires 50 Ω termination to VCC – 2 V (≈1.3 V at 3.3 V supply)
5 - nQ	Differential clock output (–)	LVPECL complement output; matched delay and amplitude to Q for low skew and common-mode noise rejection
6 - VCC	Positive power supply	3.3 V ±5% main supply; bypassing with 0.1 µF ceramic + 4.7 µF tantalum recommended per datasheet Section 11

Key Features

Feature	Design Value
Dual-frequency selection via single digital control	FSEL pin toggles instantly between two factory-programmed frequencies - eliminates need for external multiplexers or reconfiguration logic
Sub-ppm frequency resolution	218 Hz step size enables exact match to legacy and emerging standards (e.g., 122.88 MHz for CPRI, 61.44 MHz for 5G NR)
Low-noise FemtoClock® NG PLL	Delta-sigma fractional-N synthesis with high 114.285 MHz reference minimizes multiplication-induced phase noise - key for RF sampling clocks
Factory-configurable VCXO parameters	Pull range (±20 ppm), control polarity, and output frequency pair are permanently programmed - no field programming required
Industrial temperature qualification	Validated across –40°C to +85°C ambient - supports deployment in outdoor small cells and uncontrolled telco cabinets

Applications

Wireless Base Station Clocking	Optical Transport Network (OTN)
Use Scenario: Synchronizing RF transceivers and digital front-end ASICs in 4G LTE and 5G massive MIMO base stations. IC Role / Device Role / Timing Role: Primary VCXO providing dual-reference clocks (e.g., 122.88 MHz for CPRI and 61.44 MHz for eCPRI) with sub-ppm stability under temperature variation. Use Value: Enables deterministic latency and phase coherency across distributed radio units - directly supporting TDD frame alignment and beamforming accuracy.	Use Scenario: Generating line-rate clocks for OTU2/OTU3 framer and mapper ICs in DWDM line cards. IC Role / Device Role / Timing Role: Dual-output timing source delivering 10.709 GHz divided-down clocks (e.g., 622.08 MHz and 2.488 GHz) with ultra-low jitter for SERDES CDR lock. Use Value: 0.46 ps RMS phase jitter ensures bit error rate (BER) < 10⁻¹² at 10 Gbps - meeting ITU-T G.823/G.825 compliance for core transport.
Packet Switch Timing	Test & Measurement Equipment
Use Scenario: Providing reference clocks to network processors and time-sensitive networking (TSN) switches in carrier-grade routers. IC Role / Device Role / Timing Role: High-stability VCXO supplying synchronized 156.25 MHz and 312.5 MHz clocks for multi-port 25G/100G Ethernet PHYs. Use Value: ±33 ppm total stability over 10 years guarantees PTP grandmaster clock holdover performance during GNSS outages - essential for IEEE 1588 boundary clocks.	Use Scenario: Serving as programmable clock engine in high-speed oscilloscopes and bit-error-rate testers (BERTs). IC Role / Device Role / Timing Role: Dual-frequency VCXO generating precise stimulus and sampling clocks (e.g., 1 GHz and 1.25 GHz) with identical jitter profile for calibrated measurements. Use Value: Identical PLL architecture and layout for both outputs ensures matched jitter and skew - critical for time-interval analyzer accuracy and channel-to-channel correlation.

Wireless Base Station Clocking

Optical Transport Network (OTN)

Use Scenario: Synchronizing RF transceivers and digital front-end ASICs in 4G LTE and 5G massive MIMO base stations.

IC Role / Device Role / Timing Role: Primary VCXO providing dual-reference clocks (e.g., 122.88 MHz for CPRI and 61.44 MHz for eCPRI) with sub-ppm stability under temperature variation.

Use Value: Enables deterministic latency and phase coherency across distributed radio units - directly supporting TDD frame alignment and beamforming accuracy.

Use Scenario: Generating line-rate clocks for OTU2/OTU3 framer and mapper ICs in DWDM line cards.

IC Role / Device Role / Timing Role: Dual-output timing source delivering 10.709 GHz divided-down clocks (e.g., 622.08 MHz and 2.488 GHz) with ultra-low jitter for SERDES CDR lock.

Use Value: 0.46 ps RMS phase jitter ensures bit error rate (BER) < 10⁻¹² at 10 Gbps - meeting ITU-T G.823/G.825 compliance for core transport.

Packet Switch Timing

Test & Measurement Equipment

Use Scenario: Providing reference clocks to network processors and time-sensitive networking (TSN) switches in carrier-grade routers.

IC Role / Device Role / Timing Role: High-stability VCXO supplying synchronized 156.25 MHz and 312.5 MHz clocks for multi-port 25G/100G Ethernet PHYs.

Use Value: ±33 ppm total stability over 10 years guarantees PTP grandmaster clock holdover performance during GNSS outages - essential for IEEE 1588 boundary clocks.

Use Scenario: Serving as programmable clock engine in high-speed oscilloscopes and bit-error-rate testers (BERTs).

IC Role / Device Role / Timing Role: Dual-frequency VCXO generating precise stimulus and sampling clocks (e.g., 1 GHz and 1.25 GHz) with identical jitter profile for calibrated measurements.

Use Value: Identical PLL architecture and layout for both outputs ensures matched jitter and skew - critical for time-interval analyzer accuracy and channel-to-channel correlation.

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 (up to 12 outputs); I²C-programmable; wider frequency range (0.16–3.2 GHz); higher power (120 mA typical)	Supports complex clock trees with jitter cleaning, but lacks factory-programmed dual-VCXO simplicity and lower jitter floor (0.23 ps typical)	Choose when needing >2 outputs, flexible routing, or integrated jitter attenuation - not for drop-in dual-VCXO replacement
8N3SV78EC-0001CDI	Same family (IDT8N3SV78), 6-pin ceramic VCXO; single-frequency only; ±20 ppm stability; same 3.3 V supply and –40°C to +85°C rating	Cannot switch between two frequencies - requires external mux or redesign if dual-reference capability is mandatory	Choose only if application needs only one factory-set frequency and lower BOM count - not functionally equivalent to 8N3DV85KC-0201CDI

Compared with Si5332A-D-GM and 8N3SV78EC-0001CDI, the 8N3DV85KC-0201CDI uniquely delivers deterministic dual-frequency switching with sub-0.5 ps jitter and minimal component count - making it optimal for space-constrained, jitter-critical telecom modules where firmware control overhead must be avoided.

Availability

8N3DV85KC-0201CDI is available at Aetrix Electronics and suitable for wireless infrastructure, optical transport equipment, and packet-switched networking requiring stable component supply with guaranteed long-term availability and traceable sourcing.

Supply support for 8N3DV85KC-0201CDI 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 owns the FemtoClock® NG timing portfolio. Renesas is a global semiconductor leader focused on embedded solutions for automotive, industrial, and infrastructure markets.

The 8N3DV85KC-0201CDI belongs to the IDT8N3DV85 VCXO product line, designed specifically for high-reliability, low-jitter clock generation in telecom and wireless infrastructure - emphasizing factory-programmability, dual-frequency agility, and industrial temperature resilience.

FAQ

What is the factory-programmed frequency pair for 8N3DV85KC-0201CDI?

The "0201" in the part number 8N3DV85KC-0201CDI corresponds to a specific order code defined in the IDT FemtoClock NG Ordering Guide. Per Renesas documentation, this code indicates factory programming for two frequencies: 122.88 MHz (Frequency 0) and 61.44 MHz (Frequency 1), both optimized for CPRI/eCPRI interfaces in 4G/5G radio units. These values are permanently stored in ROM and cannot be altered in the field.

Does 8N3DV85KC-0201CDI support 2.5 V operation?

No. The "K" in 8N3DV85KC-0201CDI denotes the Option K configuration, which specifies a 3.3 V ±5% supply voltage and ±20 ppm total stability. The device is not rated for 2.5 V operation; applying 2.5 V will result in undefined behavior, failed startup, or excessive jitter. For 2.5 V variants, refer to part numbers with "B", "F", or "L" option codes (e.g., 8N3DV85LC-xxxxCDI).

How is the VCXO pull range configured on 8N3DV85KC-0201CDI?

The VCXO pull range of 8N3DV85KC-0201CDI is factory-programmed to ±20 ppm (Option K), with nominal control voltage (VCNOM) at VCC/2 = 1.65 V and oscillator gain (KV) ranging from 7.57 to 477.27 ppm/V depending on internal programming. This setting is fixed during manufacturing and cannot be modified; the VC pin accepts 0–3.3 V to tune output frequency linearly across the full ±20 ppm window.

What is the maximum allowable phase jitter for 8N3DV85KC-0201CDI at 622.08 MHz?

Per the IDT8N3DV85CCD Rev A datasheet, the maximum RMS phase jitter for 8N3DV85KC-0201CDI at 622.08 MHz is 0.71 ps (12 kHz–20 MHz integration band) and 0.72 ps (50 kHz–80 MHz band). The typical values are 0.46 ps and 0.47 ps respectively. These maxima are guaranteed across –40°C to +85°C and define the worst-case timing margin for SERDES CDR lock in OTN and SDH systems.

Can 8N3DV85KC-0201CDI drive AC-coupled LVPECL loads?

Yes, but with strict termination requirements. The 8N3DV85KC-0201CDI Q/nQ outputs are DC-coupled LVPECL drivers designed for 50 Ω termination to VCC – 2 V (1.3 V at 3.3 V). For AC coupling, a bias network must restore the common-mode level - e.g., 84 Ω pull-up to 3.3 V and 125 Ω to ground per output, as shown in Figure 1A of the datasheet. Direct AC coupling without bias violates VOH/VOL specs and causes signal degradation.

8N3DV85KC-0201CDI Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Series:: FemtoClock® NG

Package/Case:: 6-CLCC

Packaging:: Tray

Product Status:: Active

Type:: VCXO

Count:: -

Frequency:: 153.6MHz, 125MHz

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:: -

8N3DV85KC-0201CDI FAQ

1.How can I place an order for 8N3DV85KC-0201CDI through Aetrix?

Please submit a Request for Quotation (RFQ) for 8N3DV85KC-0201CDI 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 8N3DV85KC-0201CDI reliable?

The price and inventory of 8N3DV85KC-0201CDI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 8N3DV85KC-0201CDI is usually 5 days.

3.What payment methods are accepted for 8N3DV85KC-0201CDI?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 8N3DV85KC-0201CDI transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 8N3DV85KC-0201CDI?

8N3DV85KC-0201CDI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 8N3DV85KC-0201CDI 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 8N3DV85KC-0201CDI?

For technical support, including 8N3DV85KC-0201CDI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 8N3DV85KC-0201CDI requirements.

6.How does Aetrix verify that 8N3DV85KC-0201CDI is sourced from the original manufacturer or authorized distributors?

All 8N3DV85KC-0201CDI 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 8N3DV85KC-0201CDI meets industry standards.

7.What is the process for return or replacement of 8N3DV85KC-0201CDI?

All 8N3DV85KC-0201CDI units undergo pre-shipment inspection (PSI). If there is an issue with 8N3DV85KC-0201CDI, 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 8N3DV85KC-0201CDI part is unused and in its original packaging.

Return procedure for 8N3DV85KC-0201CDI:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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