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Renesas 8N4S270EC-1088CDI
- Part No.:
- 8N4S270EC-1088CDI
- Manufacturer:
- Renesas
- Category:
- Programmable Timers and Oscillators
- Package:
- 6-CLCC
- Datasheet:
-
8N4S270EC-1088CDI.pdf
- Description:
- IC OSC CLOCK 156.25MHZ 6CLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,089
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Product details
Overview
8N4S270EC-1088CDI from Renesas Electronics (formerly IDT) is a factory-frequency-programmable LVDS crystal oscillator using fourth-generation FemtoClock® NG PLL technology. It delivers a single 2.5V/3.3V LVDS differential clock output, supports 15.476–866.67MHz and 975–1300MHz frequency ranges with ≤218Hz resolution, and operates across –40°C to +85°C for wireless infrastructure timing applications.
For engineers reviewing the 8N4S270EC-1088CDI datasheet, 8N4S270EC-1088CDI pinout, 8N4S270EC-1088CDI application, or 8N4S270EC-1088CDI equivalent, key selection criteria include its fractional/integer PLL feedback modes, RMS phase jitter down to 0.232ps (12kHz–20MHz), ±20ppm frequency stability (Option K), and 6-pin ceramic 5mm × 7mm package compatibility with high-density PCB layouts.
Technical Context
The 8N4S270EC-1088CDI integrates a 3rd-overtone internal crystal (100.000MHz or 114.285MHz) driving a delta-sigma fractional-N PLL with configurable pre-divider (P), integer/fractional feedback divider (MINT/MFRAC), and post-divider (N). Its architecture enables precise frequency synthesis while minimizing multiplication-induced phase noise.
It features asynchronous LVCMOS/LVTTL-compatible OE control (pin 1), dual LVDS outputs (Q/nQ on pins 4/5), and operates from either 2.5V or 3.3V supply. The device uses integer PLL feedback by default for improved phase noise performance in high-frequency bands (≥500MHz), as confirmed by order code "1088" mapping to fXTAL = 100.000MHz and integer mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Type | LVDS differential pair (Q/nQ); requires 100Ω termination for signal integrity |
| Frequency Range | 15.476–866.67MHz & 975–1300MHz; factory-programmed to exact value per order code |
| Frequency Resolution | ≤218Hz; enables fine-grained clock alignment in multi-rate serial interfaces |
| RMS Phase Jitter | 0.232ps typical (12kHz–20MHz, 500–1300MHz, integer PLL); meets SONET OC-192 and 10G Ethernet jitter specs |
| Supply Voltage | 2.5V ±5% or 3.3V ±5%; supports mixed-voltage system integration without level shifters |
| Operating Temp | –40°C to +85°C; qualified for industrial base station and telecom line card environments |
| Stability (Option K) | ±20ppm over temperature; reduces timing margin loss in temperature-varying chassis |
Pinout & Package
6-pin lead-free (RoHS 6) ceramic package, 5mm × 7mm × 1.55mm (CD package). Surface-mount compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OE) | Output Enable input | Asynchronous LVCMOS/LVTTL control; high = enabled Q/nQ, low = high-Z; internal 50kΩ pullup |
| 2 (DNU) | Do Not Use | Factory test-only; must be left unconnected in user design |
| 3 (GND) | Power ground | Reference return for VDD and LVDS outputs; requires low-inductance connection to ground plane |
| 4 (Q) | LVDS positive output | Differential clock leg; 247–454mV swing, 1.125–1.375V common-mode; matched routing required |
| 5 (nQ) | LVDS negative output | Complementary LVDS leg; 100Ω differential termination essential to suppress common-mode noise |
| 6 (VDD) | Power supply | 2.5V or 3.3V core supply; bypassed with 0.1µF capacitor placed adjacent to pin per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| FemtoClock® NG PLL | Fourth-generation architecture enabling sub-ps jitter at GHz frequencies via optimized VCO and delta-sigma fractional-N synthesis |
| Factory frequency programming | Single fixed frequency programmed at wafer/test; eliminates field programming complexity and calibration overhead |
| Integer vs. fractional PLL modes | Order code "1xxx" selects integer feedback for lowest phase noise ≥500MHz; trade-off is reduced frequency flexibility |
| LVDS output compliance | Meets ANSI TIA/EIA-644-A; 247–454mV differential swing and 1.125–1.375V common-mode support robust noise immunity |
| Thermal reliability | Junction temperature remains ≤112.4°C at 85°C ambient (no airflow), ensuring >10-year operational life in sealed enclosures |
Applications
| Wireless Baseband Processing | Optical Transport Networking |
|---|---|
Use Scenario: Synchronizing ADC/DAC sampling clocks and FPGA fabric in LTE/5G massive MIMO radio units. IC Role / Device Role / Timing Role: Primary low-jitter reference oscillator for JESD204B SerDes links and digital up/down converters. Use Value: 0.232ps RMS phase jitter (12kHz–20MHz) ensures <0.5 LSB SNR degradation in 16-bit RF data converters. | Use Scenario: Providing line-rate clocking for OTU-2/OTU-3 framer and FEC ASICs in DWDM line cards. IC Role / Device Role / Timing Role: Stratum-3-compliant timing source feeding multiple SERDES lanes and packet buffer controllers. Use Value: ±20ppm stability (Option K) and –40°C to +85°C operation maintain bit error rate <1e–15 under thermal cycling. |
| High-Speed Data Center Switching | Test & Measurement Equipment |
Use Scenario: Clocking 25G/50G PAM4 transceivers and switch fabric ASICs in modular spine-leaf topologies. IC Role / Device Role / Timing Role: Low-phase-noise LVDS clock generator for multi-gigabit parallel bus interfaces and SerDes reference inputs. Use Value: 50ps cycle-to-cycle jitter and 450ps max rise/fall time ensure setup/hold margins for DDR4/DDR5 memory controllers. | Use Scenario: Serving as programmable reference in high-resolution spectrum analyzers and arbitrary waveform generators. IC Role / Device Role / Timing Role: Factory-configured precision clock source replacing discrete crystal + PLL solutions in compact instrument modules. Use Value: 218Hz frequency resolution enables exact stimulus alignment with DUT sampling rates across 15MHz–1.3GHz range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable oscillator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si5338A-D-GM | 4-output I2C-programmable clock generator; wider voltage range (1.8–3.3V); higher power (120mA typ) | Supports multi-clock domain synthesis; not a drop-in replacement due to different pinout and interface | Select when flexible post-fab frequency tuning or multiple synchronized outputs are required |
| 8N4SV76EC-0001CDI | Same family, 6-pin CD package, but nOE active-low control and VCXO capability (±100ppm pull range) | Used where dynamic frequency adjustment via analog voltage is needed, e.g., phase-lock loops with DAC control | Choose for applications requiring tunable output (e.g., jitter attenuation, frequency margining) rather than fixed-frequency precision |
Compared with Si5338A-D-GM and 8N4SV76EC-0001CDI, the 8N4S270EC-1088CDI offers superior phase noise (0.232ps vs. 0.35ps typical) and lower power (155mA vs. 120mA) at the cost of fixed factory programming and single-output limitation - ideal for cost-sensitive, high-stability embedded timing.
Availability
8N4S270EC-1088CDI is available at Aetrix Electronics and suitable for wireless infrastructure, optical transport networking, and high-speed data center switching requiring stable component supply, long-lifecycle availability, and RoHS-compliant packaging.
Supply support for 8N4S270EC-1088CDI 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 is a global semiconductor leader delivering trusted embedded solutions, including high-performance timing devices acquired through its acquisition of IDT in 2019.
The 8N4S270EC-1088CDI belongs to Renesas' FemtoClock® NG programmable oscillator product line, engineered specifically for low-jitter, high-frequency clock generation in telecom, networking, and test equipment where phase noise and frequency accuracy are critical.
FAQ
What is the factory-programmed output frequency of the 8N4S270EC-1088CDI?
The 8N4S270EC-1088CDI is factory-programmed to 1088 MHz, as indicated by the "1088" suffix in the part number. This falls within the 975–1300 MHz supported band and uses integer PLL feedback mode (order code "1xxx") for optimal phase noise performance at this frequency.
Does the 8N4S270EC-1088CDI support both 2.5V and 3.3V supply voltages?
Yes, the 8N4S270EC-1088CDI operates from either 2.5V ±5% or 3.3V ±5% supply, with corresponding DC characteristics specified in Tables 4A–4B. Power supply current is 129–155 mA at 2.5V and 134–160 mA at 3.3V, enabling flexible integration into mixed-voltage systems without external regulators.
What is the RMS phase jitter specification for the 8N4S270EC-1088CDI at 1088 MHz?
At 1088 MHz, the 8N4S270EC-1088CDI achieves 0.232ps typical RMS phase jitter (12kHz–20MHz integration range) using integer PLL feedback, as confirmed by its "1xxx" order code. This meets stringent requirements for 10G/25G Ethernet PHYs and OTU-3/OTU-4 framer ICs.
How is output enable controlled on the 8N4S270EC-1088CDI?
The 8N4S270EC-1088CDI uses pin 1 (OE) for asynchronous output enable control: logic high enables the Q/nQ LVDS outputs, logic low places them in high-impedance state. An internal 50kΩ pullup resistor ensures default-enabled operation if OE is left unconnected.
What package type and dimensions does the 8N4S270EC-1088CDI use?
The 8N4S270EC-1088CDI uses a RoHS-compliant 6-pin ceramic CD package measuring 5mm × 7mm × 1.55mm. It is designed for surface-mount assembly with JEDEC-standard reflow profiles and requires no special handling beyond standard moisture sensitivity level (MSL) 3 precautions.
8N4S270EC-1088CDI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- FemtoClock® NG
- Package/Case:
- 6-CLCC
- Packaging:
- Tray
- Product Status:
- Active
- Type:
- Clock Oscillator
- Count:
- -
- Frequency:
- 156.25MHz
- Voltage - Supply:
- 3.135V ~ 3.465V
- Current - Supply:
- 134 mA
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 6-CLCC (7x5)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
8N4S270EC-1088CDI FAQ
1.How can I place an order for 8N4S270EC-1088CDI through Aetrix?
Please submit a Request for Quotation (RFQ) for 8N4S270EC-1088CDI 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 8N4S270EC-1088CDI reliable?
The price and inventory of 8N4S270EC-1088CDI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 8N4S270EC-1088CDI is usually 5 days.
3.What payment methods are accepted for 8N4S270EC-1088CDI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 8N4S270EC-1088CDI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 8N4S270EC-1088CDI?
8N4S270EC-1088CDI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 8N4S270EC-1088CDI 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 8N4S270EC-1088CDI?
For technical support, including 8N4S270EC-1088CDI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 8N4S270EC-1088CDI requirements.
6.How does Aetrix verify that 8N4S270EC-1088CDI is sourced from the original manufacturer or authorized distributors?
All 8N4S270EC-1088CDI 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 8N4S270EC-1088CDI meets industry standards.
7.What is the process for return or replacement of 8N4S270EC-1088CDI?
All 8N4S270EC-1088CDI units undergo pre-shipment inspection (PSI). If there is an issue with 8N4S270EC-1088CDI, 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 8N4S270EC-1088CDI part is unused and in its original packaging.
Return procedure for 8N4S270EC-1088CDI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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