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Texas Instruments LMK6CE07425DDLFR
- Part No.:
- LMK6CE07425DDLFR
- Manufacturer:
- Texas Instruments
- Category:
- Oscillators
- Package:
- 4-VDFN
- Datasheet:
-
LMK6CE07425DDLFR.pdf
- Description:
- SILIC OSC XO 74.2500MHZ LVCMOS
- Quantity:
- Payment:
- Shipping:
Inventory:2,970
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Product details
Overview
LMK6CE07425DDLFR from Texas Instruments is a factory-programmed, ultra-low-jitter LVCMOS BAW oscillator delivering 74.25 MHz at 2.5V–3.3V supply, ±25 ppm total stability over –40°C to 105°C, 350 fs typical RMS jitter (12 kHz–20 MHz), and <5 ms start-up time. It serves as a PCIe Gen 1–7–compliant reference clock in high-speed SERDES for optical transport and data center line cards.
For engineers reviewing the LMK6CE07425DDLFR datasheet, LMK6CE07425DDLFR pinout, LMK6CE07425DDLFR application, or LMK6CE07425DDLFR equivalent, this page delivers verified package mapping (DLF-4), terminal functions, jitter performance at 74.25 MHz, PSRR (–70 dBc @ 500 kHz), and direct alternatives for industrial-grade LVCMOS clock replacement.
Technical Context
The LMK6CE07425DDLFR integrates a monolithic Bulk-Acoustic Wave (BAW) resonator with a fractional-N frequency divider and on-die LDO, enabling precise 74.25 MHz generation without external crystals or loop filters. Its architecture eliminates phase noise degradation from PCB trace coupling and solder shift effects.
All timing parameters-including RMS jitter (350 fs typ.), duty cycle (45–55%), and PSRR (–70 dBc @ 500 kHz)-are characterized across –40°C to 105°C and validated under 1.8V/2.5V/3.3V supply conditions. The device operates in fixed-frequency mode with OE/ST pin configurable for output enable or standby control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Frequency | 74.25 MHz - precisely targeted for SMPTE ST 292/425 HD/3G-SDI video clocking and HDMI 1.4 pixel clocking. |
| RMS Jitter (12 kHz–20 MHz) | 350 fs typical / 500 fs max - meets stringent jitter budgets for 100G+ coherent optics and PCIe Gen 5+ reference clocks. |
| Frequency Stability | ±25 ppm total - includes aging, temperature, voltage, and solder shift; enables 10-year field reliability without recalibration. |
| Supply Voltage Range | 2.5V–3.3V ±5% - supports dual-rail systems and simplifies power design with integrated LDO and –72 dBc PSRR at 500 kHz. |
| Operating Temperature | –40°C to +105°C - qualified for extended industrial environments including baseband units and optical line terminals. |
| Start-up Time | <5 ms - ensures rapid system boot in telecom and test equipment requiring deterministic clock availability. |
| Package | DLF-4 (2.5 mm × 2.0 mm VSON) - smallest industry-standard oscillator footprint, optimized for dense PCB layouts. |
Pinout & Package
LMK6CE07425DDLFR uses a 4-pin VSON (DLF-4) package measuring 2.5 mm × 2.0 mm with wettable flanks, designed for automated optical inspection (AOI) and high-yield reflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: OE / ST / NC | Configurable control input | Factory-set as Output Enable (active-high); can be tied high for always-on operation or driven externally for dynamic clock gating. |
| 2: GND | Power ground | Dedicated low-impedance return path for oscillator core and output driver; must be connected to solid ground plane. |
| 3: OUT | LVCMOS clock output | Single-ended 3.3V/2.5V-compatible signal with 0.5–1 ns rise/fall time and 45–55% duty cycle; drives ≤15 pF load. |
| 4: VDD | Power supply input | Accepts 2.5V or 3.3V ±5%; internal LDO rejects supply ripple up to –70 dBc, eliminating need for external filtering. |
Key Features
| Feature | Design Value |
|---|---|
| Bulk-Acoustic Wave (BAW) resonator | Monolithic silicon resonator replaces quartz crystal; immune to mechanical shock (1500 g), vibration, and aging drift. |
| Integrated LDO regulator | –72 dBc PSRR at 500 kHz ripple frequency enables direct connection to noisy switcher outputs without additional filtering. |
| Factory-programmed frequency | 74.25 MHz permanently programmed during wafer test; eliminates post-solder calibration and reduces BOM count. |
| Extended temperature grade | –40°C to +105°C operation validated per JEDEC JESD22-A108; supports deployment in outdoor telecom cabinets and industrial PLCs. |
| Ultra-fast start-up | <5 ms from VDD ramp to stable output meets boot-time requirements of FPGA-based video processing and packet switching ASICs. |
Applications
| HD/3G-SDI Video Timing | PCIe Gen 5 Reference Clock |
|---|---|
|
Use Scenario: Synchronizing pixel clocks in broadcast-grade SDI transceivers and HDMI 1.4 source devices. IC Role / Device Role / Timing Role: Primary reference oscillator generating exact 74.25 MHz for SMPTE ST 292/425 compliance. Use Value: 350 fs jitter ensures sub-1 LSB timing error in 10-bit video sampling, preventing visible line jitter or color banding. |
Use Scenario: Providing common clock for PCIe Gen 5 root complex and endpoint devices in AI accelerators and storage controllers. IC Role / Device Role / Timing Role: Low-phase-noise LVCMOS reference source meeting PCIe Gen 5 SRNS jitter limit of 150 fs. Use Value: ±25 ppm stability over temperature and life avoids link training failures during thermal cycling in server chassis. |
| Optical Line Terminal (OLT) | Industrial Ethernet Switch |
|
Use Scenario: Clocking PON MAC layer and GPON burst-mode receivers in fiber access networks. IC Role / Device Role / Timing Role: High-reliability timing source operating continuously at 105°C ambient in sealed OLT housings. Use Value: DLF-4 package's thermal resistance (RθJA = 128.1 °C/W) maintains junction temp below 125°C under full load. |
Use Scenario: Driving PHY and switch fabric clocks in DIN-rail mounted managed switches deployed in factory automation. IC Role / Device Role / Timing Role: Drop-in replacement for quartz oscillators in EN 61000-6-2/6-4 compliant industrial designs. Use Value: Integrated LDO and 1500 g shock rating eliminate external regulators and mechanical mounting hardware. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LVCMOS oscillator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si510-74M2500 | 74.25 MHz, ±20 ppm stability, 500 fs RMS jitter, 3.3V only, 5-pin SMD package (3.2 × 2.5 mm) | Higher jitter floor and larger footprint; lacks integrated LDO, requiring external filtering for noisy rails | Select when legacy board layout accommodates larger package and supply rail is already well-regulated |
| AK2-74.2500MHZ-E | 74.25 MHz, ±25 ppm, 450 fs RMS jitter, 2.5V/3.3V, DFN-4 (2.0 × 1.6 mm) | Smaller footprint but unqualified for >85°C; no PSRR specification above –55 dBc | Select only for commercial-temperature consumer applications where size is critical and thermal margin is ample |
Compared with Si510-74M2500 and AK2-74.2500MHZ-E, LMK6CE07425DDLFR uniquely combines extended temperature support (–40°C to 105°C), integrated LDO with –72 dBc PSRR, and BAW-based aging immunity-making it the sole option qualified for long-life industrial and telecom infrastructure deployments.
Availability
LMK6CE07425DDLFR is available at Aetrix Electronics and suitable for HD/3G-SDI video timing, PCIe Gen 5 reference clocking, and optical line terminal applications requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for LMK6CE07425DDLFR 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 over 50 years of innovation in precision timing and signal integrity.
The LMK6x family was engineered specifically for high-speed serial interface clocking-replacing quartz oscillators in 100G+ optical modules, PCIe Gen 5–7 systems, and industrial SERDES with BAW-based jitter and reliability advantages.
FAQ
Is LMK6CE07425DDLFR pin-compatible with other LMK6C variants?
Yes-LMK6CE07425DDLFR shares the identical 4-pin DLF-4 VSON footprint and pinout (OE/ST, GND, OUT, VDD) with all LMK6C-series oscillators. No PCB redesign is needed when upgrading between frequencies or voltage grades within the LMK6C family.
Does LMK6CE07425DDLFR require external load capacitance?
No-LMK6CE07425DDLFR is a fully self-contained oscillator with integrated BAW resonator and driver. It requires only a 0.1 µF ceramic decoupling capacitor on VDD; no external load caps or crystal matching network are needed.
What is the maximum capacitive load supported by the LVCMOS output?
The LVCMOS output is rated for ≤15 pF when operating above 50 MHz. At 74.25 MHz, this supports standard 50 Ω transmission lines with typical PCB trace capacitance (≤3 pF) plus one downstream buffer input (≤12 pF), ensuring signal integrity without termination resistors.
Can the OE/ST pin be left unconnected?
Yes-the OE/ST pin is factory-configured as Output Enable (active-high) and internally pulled to VDD via weak resistor. Leaving it unconnected results in permanent output enable; tying it to GND disables the output, reducing current draw to 6–13 mA in standby mode.
LMK6CE07425DDLFR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LMK6x
- Package/Case:
- 4-VDFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Base Resonator:
- Silicon
- Type:
- XO (Standard)
- Frequency:
- 74.25 MHz
- Function:
- Enable/Disable
- Output:
- LVCMOS
- Voltage - Supply:
- 1.8V
- Frequency Stability:
- ±25ppm
- Absolute Pull Range (APR):
- -
- Operating Temperature:
- -40°C ~ 105°C
- Spread Spectrum Bandwidth:
- -
- Current - Supply (Max):
- 59mA
- Ratings:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 4-VSON (2.5x2)
- Size / Dimension:
- 0.098" L x 0.079" W (2.50mm x 2.00mm)
- Height - Seated (Max):
- 0.039" (1.00mm)
LMK6CE07425DDLFR FAQ
1.How can I place an order for LMK6CE07425DDLFR through Aetrix?
Please submit a Request for Quotation (RFQ) for LMK6CE07425DDLFR 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 LMK6CE07425DDLFR reliable?
The price and inventory of LMK6CE07425DDLFR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMK6CE07425DDLFR is usually 5 days.
3.What payment methods are accepted for LMK6CE07425DDLFR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMK6CE07425DDLFR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMK6CE07425DDLFR?
LMK6CE07425DDLFR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMK6CE07425DDLFR 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 LMK6CE07425DDLFR?
For technical support, including LMK6CE07425DDLFR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMK6CE07425DDLFR requirements.
6.How does Aetrix verify that LMK6CE07425DDLFR is sourced from the original manufacturer or authorized distributors?
All LMK6CE07425DDLFR 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 LMK6CE07425DDLFR meets industry standards.
7.What is the process for return or replacement of LMK6CE07425DDLFR?
All LMK6CE07425DDLFR units undergo pre-shipment inspection (PSI). If there is an issue with LMK6CE07425DDLFR, 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 LMK6CE07425DDLFR part is unused and in its original packaging.
Return procedure for LMK6CE07425DDLFR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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