Texas Instruments LMK6CE02500CDLER

Overview

LMK6CE02500CDLER from Texas Instruments is a factory-programmed, ultra-low-jitter Bulk-Acoustic Wave (BAW) oscillator delivering a fixed 25 MHz LVCMOS clock output. It operates from 2.5V–3.3V ±5% supply across –40°C to 105°C, features pin-1 Output Enable (active-high), and is housed in a 3.2 mm × 2.5 mm VSON (DLE-4) package. It serves as a high-stability reference clock for FPGA timing, industrial control processors, and PCIe Gen 1–7 compliant systems.

For engineers reviewing the LMK6CE02500CDLER datasheet, LMK6CE02500CDLER pinout, LMK6CE02500CDLER application, or LMK6CE02500CDLER equivalent, key selection criteria include its ±25 ppm total frequency stability over temperature and 10-year aging, sub-500 fs RMS jitter at 25 MHz, 4-pin DLE package footprint, and integrated LDO for supply noise immunity up to –72 dBc PSRR at 500 kHz.

Technical Context

The LMK6CE02500CDLER implements TI's monolithic BAW resonator with a fractional output divider, enabling precise factory-trimmed 25 MHz generation without external crystals. Its architecture includes an integrated LDO, thermal sensor, and output driver optimized for LVCMOS logic levels with fast 0.5–1 ns rise/fall times into 2 pF load.

It supports active-high Output Enable on Pin 1, enabling dynamic clock gating with 25 µs enable time and 1 µs disable time. The device achieves < 5 ms start-up time and maintains ±25 ppm frequency stability across full industrial temperature range (–40°C to 105°C) and supply voltage variation.

Key Specifications

Pinout & Package

VSON (DLE-4) package: 3.2 mm × 2.5 mm, 4-pin, exposed thermal pad, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with Si510-25M000000 and AK2-25.000MHZ-E, the LMK6CE02500CDLER delivers superior thermal robustness (105°C), lower jitter, and active clock control-making it optimal for high-reliability, high-performance embedded timing where supply noise and thermal stress are design constraints.

Availability

LMK6CE02500CDLER is available at Aetrix Electronics and suitable for industrial motor control, FPGA reference clocking, PCIe Gen 5/6 root complexes, and optical transport line cards requiring stable component supply across extended temperature and long product lifecycles.

Supply support for LMK6CE02500CDLER 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 manufacturing and design centers across North America, Asia, and Europe.

The LMK6C family is designed specifically for high-reliability, low-jitter timing in industrial, telecom, and computing infrastructure-replacing quartz oscillators with monolithic BAW technology for improved shock resistance, smaller size, and faster start-up.

FAQ

What is the output type and drive capability of the LMK6CE02500CDLER?

The LMK6CE02500CDLER provides a single-ended LVCMOS output capable of driving standard CMOS loads up to 15 pF at frequencies above 50 MHz. At 25 MHz, it delivers VOH ≥ 2.64 V and VOL ≤ 0.66 V into 6.6 mA load (3.3V supply), with 0.5–1 ns rise/fall times into 2 pF. Its output impedance is 40–60 Ω, enabling clean signal integrity without external termination.

Does the LMK6CE02500CDLER support dynamic clock gating?

Yes, the LMK6CE02500CDLER supports dynamic clock gating via Pin 1 (OE / ST / NC), configured as an active-high Output Enable. When pulled HIGH, the 25 MHz output is enabled with 25 µs latency; when pulled LOW, output disables within 1 µs. This feature allows real-time power management in FPGA, MCU, or ASIC subsystems without requiring reset or reconfiguration.

What is the total frequency stability specification for the LMK6CE02500CDLER over its operating life?

The LMK6CE02500CDLER guarantees ±25 ppm total frequency stability over its full operational lifetime. This specification includes initial calibration tolerance, variation across –40°C to 105°C, supply voltage drift (2.5V–3.3V ±5%), and 10 years of aging at 25°C-ensuring long-term timing accuracy in mission-critical industrial and telecom deployments without recalibration.

How does the integrated LDO in the LMK6CE02500CDLER improve system-level timing performance?

The integrated LDO in the LMK6CE02500CDLER provides –72 dBc PSRR at 500 kHz, effectively attenuating switching noise from shared digital power rails. This directly reduces power-supply-induced jitter on the 25 MHz LVCMOS output, eliminating the need for external LDOs or ferrite-bead filters-simplifying layout while maintaining sub-0.5 ps RMS jitter required for PCIe Gen 5+ and high-speed SERDES applications.

Is the LMK6CE02500CDLER pin-compatible with other members of the LMK6x family?

No, the LMK6CE02500CDLER is not pin-compatible with LMK6D/H/P variants, which use 6-pin DLE/DLF packages and differential outputs. It belongs exclusively to the LMK6C sub-family and uses a 4-pin VSON (DLE-4) layout optimized for LVCMOS. Pin mapping differs fundamentally: LMK6C has OE/VDD/GND/OUT, while LMK6D/H/P use OE/NC/GND/OUTP/OUTN/VDD.