Overview
The LMK00334RTVT, produced by Texas Instruments, is a four-output clock buffer and level translator designed for high-frequency, low-jitter clock distribution and level translation. This device is particularly suited for applications requiring precise clock signal management, such as in data centers, core routers, and servers. It operates from a 3.3-V core supply and offers three independent output supplies of 3.3 V or 2.5 V, enhancing its versatility and power efficiency.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Clock Frequency Range | Up to 400 MHz | Hz |
| Input Types | LVPECL, LVDS, CML, SSTL, HSTL, HCSL, or single-ended clocks | - |
| Crystal Input Frequency Range | 10 to 40 MHz | Hz |
| Output Types | HCSL, Hi-Z (selectable), LVCMOS | - |
| Additive RMS Phase Jitter for PCIe Gen5 at 100 MHz | 15 fs (typical) | fs |
| PSRR at 156.25 MHz | -72 dBc | dBc |
| Core Supply Voltage | 3.3 V ± 5% | V |
| Output Supply Voltage | 3.3 V or 2.5 V ± 5% | V |
| Operating Temperature Range | -40°C to +105°C | °C |
| Package Type | 32-pin WQFN (5 mm × 5 mm) | - |
Key Features
- 3:1 Input multiplexer with two universal inputs and one crystal input
- Supports various input clock types: LVPECL, LVDS, CML, SSTL, HSTL, HCSL, or single-ended clocks
- Two banks with two differential HCSL outputs each, and one LVCMOS output with synchronous enable input
- High PSRR: -72 dBc at 156.25 MHz
- Low additive RMS phase jitter for PCIe Gen5 at 100 MHz: 15 fs (typical)
- Pin-controlled configuration for flexibility
- Industrial temperature range: -40°C to +105°C
Applications
- Data center switches
- Core routers
- Servers, computing (PCIe Gen 3.0 to 5.0)
- Remote radio units and baseband units
- Distribution of reference clocks for ADCs, DACs, multi-gigabit Ethernet, XAUI, fibre channel, SATA/SAS, SONET/SDH, CPRI, and high-frequency backplanes
Q & A
- What is the primary function of the LMK00334RTVT?
The LMK00334RTVT is a four-output clock buffer and level translator designed for high-frequency, low-jitter clock distribution and level translation.
- What types of input clocks does the LMK00334RTVT support?
The device supports LVPECL, LVDS, CML, SSTL, HSTL, HCSL, or single-ended clocks.
- What is the frequency range of the crystal input?
The crystal input frequency range is from 10 to 40 MHz.
- What are the output types available on the LMK00334RTVT?
The device provides HCSL, Hi-Z (selectable), and LVCMOS outputs.
- What is the additive RMS phase jitter for PCIe Gen5 at 100 MHz?
The additive RMS phase jitter for PCIe Gen5 at 100 MHz is 15 fs (typical).
- What is the PSRR at 156.25 MHz?
The PSRR at 156.25 MHz is -72 dBc.
- What is the operating temperature range of the LMK00334RTVT?
The operating temperature range is -40°C to +105°C.
- What is the package type of the LMK00334RTVT?
The device is packaged in a 32-pin WQFN (5 mm × 5 mm).
- What are some common applications of the LMK00334RTVT?
Common applications include data center switches, core routers, servers, remote radio units, and baseband units.
- How does the LMK00334RTVT enhance system performance?
The device enhances system performance by providing high accuracy, low jitter, and versatile power supply options, increasing the timing margin in the system.
