Renesas 8N4SV75KC-0080CDI

Overview

8N4SV75KC-0080CDI from Renesas (formerly IDT) is a factory-programmed LVDS voltage-controlled crystal oscillator (VCXO) with fourth-generation FemtoClock® NG PLL synthesis, delivering programmable output frequencies from 15.476 MHz to 866.67 MHz and 975 MHz to 1,300 MHz at ≤218 Hz resolution, ±20 ppm total stability over -40°C to +85°C, and 0.46 ps RMS phase jitter (12 kHz–20 MHz) at 500–1300 MHz - deployed in wireless infrastructure baseband timing and high-speed SerDes clocking.

For engineers reviewing the 8N4SV75KC-0080CDI datasheet, 8N4SV75KC-0080CDI pinout, 8N4SV75KC-0080CDI application, or 8N4SV75KC-0080CDI equivalent, key selection criteria include its dual-band frequency coverage, LVDS differential output compliance, factory-set ±20 ppm stability (option code K), OE-controlled output enable, and ceramic 5 mm × 7 mm × 1.55 mm package with 6-pin lead-free (RoHS 6) construction.

Technical Context

The 8N4SV75KC-0080CDI 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), enabling precise frequency synthesis across two disjoint bands. Its FemtoClock® NG VCO operates at 1950–2600 MHz before division.

Control is implemented via analog VC input (0–VDD tuning range, ±20 ppm pull range, 7.57–477.27 ppm/V gain) and digital OE input (LVCMOS/LVTTL compatible, active-high, internal 50 kΩ pullup), with no FSEL pin used in this single-frequency variant. Output is a single LVDS differential pair (Q/nQ) with 247–454 mV differential swing and 1.13–1.31 V common-mode offset.

Key Specifications

Pinout & Package

6-lead ceramic surface-mount package (5 mm × 7 mm × 1.55 mm, RoHS 6 compliant, CD package code). Pin 1 = VC (control voltage input), Pin 2 = OE (LVCMOS/LVTTL output enable), Pin 3 = GND, Pins 4 & 5 = Q/nQ (LVDS differential output), Pin 6 = VDD (2.5 V or 3.3 V supply).

Key Features

Applications

Equivalent & Alternatives

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

Compared with Si510-PROG and 8N4SV75EC-0080CDI, the 8N4SV75KC-0080CDI uniquely delivers ±20 ppm stability with sub-0.5 ps jitter in the 500–1300 MHz band - making it the only viable option for 5G FR1 baseband and OTN line-card timing where holdover accuracy and spectral purity are non-negotiable.

Availability

8N4SV75KC-0080CDI is available at Aetrix Electronics and suitable for wireless infrastructure, telecom synchronization, and high-speed SerDes applications requiring stable component supply, long-lifecycle availability, and guaranteed factory programming to 156.25 MHz with ±20 ppm pull range.

Supply support for 8N4SV75KC-0080CDI 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 formed from the merger of Renesas Technology and NEC Electronics, specializing in microcontrollers, analog, power, and timing solutions.

The 8N4SV75KC-0080CDI belongs to Renesas' FemtoClock® NG programmable timing family, engineered specifically for high-frequency, low-jitter clock generation in 4G/5G infrastructure, optical networking, and data center interconnects.

FAQ

What is the factory-programmed output frequency of the 8N4SV75KC-0080CDI?

The 8N4SV75KC-0080CDI is factory-programmed to 156.25 MHz, as indicated by the "0080" suffix in the part number per IDT's ordering nomenclature. This frequency falls within the 15.476–866.67 MHz band and is commonly used for Ethernet (10GBASE-R), CPRI, and OTU2 framing. The device retains full VCXO functionality with ±20 ppm pull range around this nominal frequency.

Does the 8N4SV75KC-0080CDI support both 2.5 V and 3.3 V supply voltages?

Yes, the 8N4SV75KC-0080CDI supports either 2.5 V ±5% or 3.3 V ±5% supply voltage, as specified in Tables 4A and 4B of the datasheet. Power supply current is 136–170 mA at 2.5 V and 140–175 mA at 3.3 V. The device automatically adapts LVDS output levels and input thresholds to the selected VDD, eliminating need for external level shifters.

What is the meaning of the "K" in the 8N4SV75KC-0080CDI part number?

The "K" in 8N4SV75KC-0080CDI denotes the option code specifying ±20 ppm frequency stability over temperature, aging, and initial calibration (10-year life), per Table on page 16 of the datasheet. It also indicates 3.3 V supply voltage. This option provides the highest stability grade in the IDT8N4SV75 family, targeting stratum-3E and ePRTC-compliant telecom applications.

Can the 8N4SV75KC-0080CDI be reprogrammed after shipment?

No, the 8N4SV75KC-0080CDI is factory-programmed with fixed frequency and pull-range configuration and cannot be reprogrammed in the field. The "L" suffix (e.g., "...CDIL") would indicate programmability, but this part ends in "CDI", confirming it is one-time-programmed. Custom configurations require ordering a new part number with updated "dddd" default-frequency code.

What is the recommended termination for the LVDS outputs of the 8N4SV75KC-0080CDI?

The recommended termination is a 100 Ω differential resistor placed as close as possible to the receiver input, matching the characteristic impedance of the PCB trace. As shown in Figure 1A of the datasheet, this standard termination minimizes reflections and ensures optimal jitter performance. The device's LVDS outputs are current-source type, so no DC biasing resistors are needed at the driver side.