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
Key Features
- 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
Applications
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.
Specifications
| 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 |
Alternate & Equivalent Parts
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.
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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.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $4.0000 | $4.00 |
| 31+ | $2.2000 | $68.20 |
| 69+ | $2.0000 | $138.00 |
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