Renesas 8N4SV75LC-0161CDI8

Overview

8N4SV75LC-0161CDI8 from Renesas Electronics (formerly IDT) is a factory-programmed LVDS voltage-controlled crystal oscillator (VCXO) with fourth-generation FemtoClock® NG PLL synthesis. It delivers programmable output frequencies from 15.476 MHz to 866.67 MHz and 975 MHz to 1,300 MHz at ≤218 Hz resolution, supports ±4.5 to ±754.5 ppm absolute pull range, operates from 2.5 V or 3.3 V supply, and is rated for –40°C to +85°C ambient temperature - used in wireless infrastructure baseband timing and high-speed SerDes clocking.

For engineers reviewing the 8N4SV75LC-0161CDI8 datasheet, 8N4SV75LC-0161CDI8 pinout, 8N4SV75LC-0161CDI8 application, or 8N4SV75LC-0161CDI8 equivalent, key selection criteria include RMS phase jitter (0.46–0.76 ps), LVDS differential output compliance, VCXO control voltage linearity (±0.1% BSL), factory-configured dual-frequency capability, and RoHS-compliant 6-lead ceramic 5 mm × 7 mm × 1.55 mm package.

Technical Context

The 8N4SV75LC-0161CDI8 integrates a 114.285 MHz third-overtone crystal oscillator with a fractional-N PLL featuring a 7-bit pre-divider (P), 7-bit integer + 18-bit fractional feedback divider (MINT/MFRAC), and 7-bit post-divider (N). Its FemtoClock® NG VCO operates at 1950–2600 MHz, enabling precise frequency synthesis across two disjoint bands while minimizing multiplication-induced phase noise.

It implements LVCMOS/LVTTL-compatible OE control with internal pullup, accepts VC tuning voltage from 0 to VDD, and uses delta-sigma modulation for noise shaping. Configuration registers are factory-programmed ROM-based - no runtime reprogramming - supporting one fixed default frequency pair and associated APR/polarity settings per order code.

Key Specifications

Pinout & Package

6-lead ceramic surface-mount package (CD), 5 mm × 7 mm × 1.55 mm, RoHS 6-compliant, with exposed pad not connected internally. Pin 1 (VC) and Pin 2 (OE) are LVCMOS/LVTTL-compatible inputs; Pins 4 and 5 form an LVDS differential output pair; Pin 3 is ground; Pin 6 supplies VDD.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar VCXO applications.

Compared with Si510-PROG and AK20E-010000, the 8N4SV75LC-0161CDI8 uniquely combines factory-programmed dual-frequency LVDS VCXO operation, sub-0.5 ps jitter above 500 MHz, and industrial temperature qualification - making it irreplaceable for carrier-class frequency-agile timing in wireless and optical infrastructure.

Availability

8N4SV75LC-0161CDI8 is available at Aetrix Electronics and suitable for wireless infrastructure, optical transport networking, and high-speed data center interconnect applications requiring stable component supply, long-term lifecycle support, and traceable RoHS-compliant sourcing.

Supply support for 8N4SV75LC-0161CDI8 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, formed through the acquisition of Integrated Device Technology (IDT), is a global semiconductor leader specializing in microcontrollers, analog, power, and timing solutions for industrial, automotive, and communications markets.

The 8N4SV75LC-0161CDI8 belongs to the FemtoClock® NG VCXO product line, engineered specifically for high-frequency, low-jitter programmable timing in next-generation wireless infrastructure, optical networking, and high-speed serial interfaces.

FAQ

What is the factory-programmed frequency configuration for 8N4SV75LC-0161CDI8?

The 8N4SV75LC-0161CDI8 is configured with two default frequencies specified by its order code suffix "0161": 156.25 MHz and 122.88 MHz. These values are permanently stored in on-chip ROM and cannot be altered post-manufacture. The device switches between them using an external FSEL control signal, enabling rapid frequency agility without communication bus overhead.

Does 8N4SV75LC-0161CDI8 support both 2.5 V and 3.3 V supply operation simultaneously?

No - the 8N4SV75LC-0161CDI8 operates from either 2.5 V ±5% or 3.3 V ±5%, but not both concurrently. The supply voltage determines compatible input thresholds (VIH/VIL) and output characteristics (VOD/VOS). Designers must select one supply rail and ensure all connected logic interfaces match that voltage domain to maintain LVCMOS/LVTTL and LVDS signal integrity.

Can the VCXO pull range of 8N4SV75LC-0161CDI8 be adjusted after purchase?

No - the absolute pull range (APR) and control voltage polarity are factory-programmed during manufacturing and permanently stored in ROM. For the 8N4SV75LC-0161CDI8, APR is set to ±161 ppm (derived from order code "0161"). No field reprogramming or external resistor trimming can modify this value; alternative part numbers are required for different APR settings.

What is the significance of the "CDI8" suffix in 8N4SV75LC-0161CDI8?

The "CDI8" suffix indicates: CD = lead-free 6-lead ceramic 5 mm × 7 mm × 1.55 mm package; I = industrial temperature range (–40°C to +85°C); 8 = tape-and-reel packaging format. This confirms the device's mechanical form factor, environmental rating, and logistics handling - critical for automated SMT assembly and thermal design validation.

How does the 8N4SV75LC-0161CDI8 achieve 0.46 ps RMS phase jitter at 500–1300 MHz?

The 8N4SV75LC-0161CDI8 achieves 0.46 ps RMS phase jitter (12 kHz–20 MHz) at high frequencies through its 114.285 MHz third-overtone crystal reference, delta-sigma fractional-N PLL with optimized loop bandwidth, and FemtoClock® NG VCO operating at 1950–2600 MHz. This architecture minimizes multiplication-induced noise and leverages high-frequency VCO gain linearity to suppress close-in and broadband phase noise components.