Texas Instruments LMK6CE05000CDLFR

Overview

LMK6CE05000CDLFR from Texas Instruments is a factory-programmed, ultra-low-jitter LVCMOS bulk-acoustic wave (BAW) oscillator delivering 50.000 MHz fixed-frequency output with ±25 ppm total frequency stability over –40°C to +105°C, 3.3 V supply, and 350 fs typical RMS jitter (12 kHz–20 MHz) at 100 MHz - deployed as a high-reliability reference clock in PCIe Gen 5/6/7 timing paths and FPGA-based industrial control systems.

For engineers reviewing the LMK6CE05000CDLFR datasheet, LMK6CE05000CDLFR pinout, LMK6CE05000CDLFR application, or LMK6CE05000CDLFR equivalent, this page delivers verified package mapping (VSON-4 DLF), confirmed LVCMOS output drive capability, validated thermal performance up to +105°C, and real-world PCIe-compliant jitter metrics - enabling rapid clock tree validation without cross-referencing external sources.

Technical Context

The LMK6CE05000CDLFR integrates a monolithic BAW resonator directly into its silicon package, eliminating external crystal dependencies and enabling sub-5 ms start-up time with integrated LDO for –72 dBc PSRR at 500 kHz ripple. Its fractional divider architecture supports precise 50.000 MHz generation without external PLL components.

It operates exclusively in LVCMOS mode with single-ended output, uses pins 1 (OE/ST/NC), 2 (GND), 3 (OUT), and 4 (VDD), and is factory-configured - no in-system reprogramming or configuration registers are present. The device targets applications requiring long-term aging stability and immunity to board-level vibration or thermal cycling.

Key Specifications

Pinout & Package

VSON-4 DLF package (2.5 mm × 2.0 mm, 0.5 mm pitch), thermally enhanced with exposed pad; designed for high-density PCB layouts and automated optical inspection.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar fixed-frequency oscillator applications.

Compared with Si510-500F-AG and AK2-50.000MHZ-E-T, the LMK6CE05000CDLFR delivers superior jitter performance (350 fs vs ≥450 fs), tighter stability (±25 ppm vs ±50/±20 ppm), and BAW-based mechanical resilience - making it the optimal choice for PCIe Gen 5+ and industrial FPGA timing where long-term reliability is non-negotiable.

Availability

LMK6CE05000CDLFR is available at Aetrix Electronics and suitable for PCIe Gen 5/6 reference clocking, FPGA core timing, and industrial motor drive control requiring stable component supply across extended temperature ranges and multi-year production cycles.

Supply support for LMK6CE05000CDLFR 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

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and clock solutions, with vertically integrated BAW manufacturing and design expertise.

The LMK6x product line was developed to replace quartz-based oscillators in high-speed digital systems, delivering ultra-low jitter, mechanical robustness, and simplified layout through monolithic BAW integration - targeting telecom, data center, and industrial timing applications.

FAQ

Is LMK6CE05000CDLFR programmable for other frequencies?

No. This device is factory-programmed for 50.000 MHz only. It contains no I²C/SPI interface or internal registers. Frequency changes require ordering a new part number (e.g., LMK6CE054000CDLFR for 54 MHz). Custom frequencies are available via TI special order process.

What is the maximum capacitive load supported on the LVCMOS output?

The LMK6CE05000CDLFR supports up to 15 pF for frequencies above 50 MHz and up to 30 pF for frequencies below 50 MHz. Exceeding these values degrades rise/fall time and increases jitter; layout should minimize trace capacitance and avoid stubs.

Does this oscillator require external power supply filtering?

A 100 nF ceramic decoupling capacitor is mandatory between VDD and GND, placed within 2 mm of the pin. While the integrated LDO provides –72 dBc PSRR at 500 kHz, omitting the capacitor causes startup failure and increased broadband jitter due to supply impedance resonance.

Can Pin 1 (OE/ST/NC) be left unconnected?

Yes - Pin 1 is internally pulled down and configured as No Connect (NC) by default. Leaving it floating maintains continuous output operation. If active control is needed, connect to VDD for OE high or GND for ST low; do not tie to intermediate voltages.