LMK00304SQ/NOPB Texas Instruments Integrated Circuit (QFN) In Stock
Texas Instruments LMK00304SQ/NOPB is a 3.1 GHz differential clock buffer and level translator with 4 true outputs in a 32-pin QFN package. Supports differential mux input, 5 pF load capacitance, and ultra-low skew for high-speed clock distribution. RoHS-compliant and available in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- —
- Pin Count
- 32
- Lifecycle
- ACTIVE
- Datasheet
- LMK00304SQ/NOPB Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $2.0000(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LMK00304SQ/NOPB?
- 3.1 GHz differential clock buffer with low-skew 4-output fan-out, ideal for high-speed PCIe, SATA, and Ethernet clock trees
- Differential MUX input conditioning enables flexible source selection and level translation between LVPECL, LVDS, and HCSL standards
- 32-pin QFN package with 5 pF load capacitance per output minimizes signal integrity degradation in high-frequency distribution networks
What is LMK00304SQ/NOPB used for?
LMK00304SQ/NOPB is designed for high-speed server, networking, and communications systems requiring low-skew clock distribution up to 3.1 GHz across 4 differential outputs. It fits PCIe clock tree designs, SATA host controllers, and FPGA clocking architectures where precise timing margins are critical. The device also suits test and measurement equipment and industrial automation controllers that demand deterministic sub-picosecond skew performance.
What are the specifications of LMK00304SQ/NOPB?
| Pbfree Code | Yes |
| YTEOL | 15 |
| Family | 00304 |
| Input Conditioning | DIFFERENTIAL MUX |
| JESD-30 Code | S-XQCC-N32 |
| JESD-609 Code | e3 |
| Load Capacitance (CL) | 5pF |
| Logic IC Type | LOW SKEW CLOCK DRIVER |
| Number of Functions | 1 |
| Number of True Outputs | 4 |
| Output Characteristics | 3-STATE |
| Package Body Material | UNSPECIFIED |
| Package Equivalence Code | LCC32,.2SQ,20 |
| Package Shape | SQUARE |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 13.5mA |
| Prop. Delay@Nom-Sup | 2.7ns |
| Propagation Delay (tpd) | 2.7ns |
| Qualification Status | Not Qualified |
| Same Edge Skew-Max (tskwd) | 0.05ns |
| Supply Voltage-Max (Vsup) | 3.45V |
| Supply Voltage-Min (Vsup) | 3.15V |
| Supply Voltage-Nom (Vsup) | 3.3V |
| Surface Mount | YES |
| Technology | BICMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | QUAD |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| fmax-Min | 3100MHz |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 3 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Where can I find the LMK00304SQ/NOPB datasheet?
LMK00304SQ/NOPB Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for LMK00304SQ/NOPB?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the maximum clock frequency supported by LMK00304SQ/NOPB and how many outputs does it provide?
LMK00304SQ/NOPB supports differential clock frequencies up to 3.1 GHz and provides 4 true low-skew outputs, making it well-suited for PCIe Gen3 and high-speed Ethernet clock distribution with tight timing budgets.
Which input signal standards does LMK00304SQ/NOPB accept through its differential MUX?
The device accepts LVPECL, LVDS, and HCSL differential input standards through its differential MUX input conditioning circuit, offering flexible source selection without external level-translation components. The 5 pF load capacitance per output preserves signal integrity at 3.1 GHz.
How does LMK00304SQ/NOPB compare to LMK00301 for a 4-output server clock distribution design?
LMK00304SQ/NOPB adds differential MUX input selection and supports up to 3.1 GHz versus the LMK00301's simpler single-input topology, making it a better fit for server designs needing redundant clock sources or multi-standard level translation across 4 outputs at reduced skew.
What package does LMK00304SQ/NOPB use and what are the thermal considerations for dense PCB layouts?
LMK00304SQ/NOPB uses a 32-pin QFN (S-XQCC-N32) package, which provides a compact footprint with an exposed pad for improved thermal dissipation. At 3.1 GHz switching across 4 outputs, maintaining adequate copper pour around the exposed pad is recommended to keep junction temperature within rated limits.
Related Guides
CSD87313DMS Synchronous Buck Power Stage Design Guide
Design a compact CSD87313DMS synchronous buck stage with practical guidance for loss, gate drive, PCB layout, EMI, thermal validation, and sourcing.
Aug 6, 2026
STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection
Choose STEF05SGR for 5 V overcurrent protection by checking current-limit margin, inrush, thermal loss, fault response, and sourcing.
Aug 6, 2026
C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC
Select C0402C103K3RACTU by voltage margin, X7R behavior, tolerance, 0402 assembly risk, and qualified alternatives.
Aug 4, 2026
STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security
Choose STM32H753VIT6 by evaluating memory architecture, LQFP-100 pin fit, connectivity, security, power, and sourcing tradeoffs.
Aug 4, 2026
Why Buy from FindMyChip
About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
More from Texas Instruments
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $4.0000 | $4.00 |
| 31+ | $2.2000 | $68.20 |
| 69+ | $2.0000 | $138.00 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“The anti-counterfeit verification gave us confidence we'd never had with other China suppliers.”
You May Also Like
ACS770ECB-200U-PFF-T
Allegro Microsystems
Integrated Circuit
ACS770KCB-150U-PFF-T
Allegro Microsystems
Integrated Circuit
MC33901WEF
NXP
Integrated Circuit
MC7808BDTRKG
ON Semiconductor
Integrated Circuit
PA94EC
Apex Microtechnology
Integrated Circuit
AP7315-28SR-7
Diodes Inc.
Integrated Circuit
74HCT245D
Nexperia
Integrated Circuit
CY62256VNLL-70ZXCT
Cypress Semiconductor
Integrated Circuit
EPM7032AETC44-4N
Intel
Integrated Circuit
EPM3512AQC208-10N
Intel
Integrated Circuit
EPM3256ATC144-7N
Intel
Integrated Circuit
EPM3256AQC208-7N
Intel
Integrated Circuit
EPM3256AQC208-10N
Intel
Integrated Circuit
EPM3128ATC100-7N
Intel
Integrated Circuit
EPM1270F256C4N
Intel
Integrated Circuit
EPF8282ATC100-4N
Intel
Integrated Circuit
EPF6016QC208-2N
Intel
Integrated Circuit
EPF6016ATC144-3N
Intel
Integrated Circuit
EPF10K30ATC144-3N
Intel
Integrated Circuit
EPC2TI32N
Intel
Integrated Circuit
EPC2LC20
Intel
Integrated Circuit
EP3SL150F1152C4N
Intel
Integrated Circuit
EP2SGX60DF780C5N
Intel
Integrated Circuit
EP2SGX60CF780C5N
Intel
Integrated Circuit