Overview
The CDCUN1208LP, produced by Texas Instruments, is a 2:8 fan-out buffer designed for low-power consumption and high-performance clock distribution. This device features universal inputs and outputs, supporting HCSL, LVDS, and LVCMOS signal types. It is particularly suited for applications requiring flexible clock management, including support for PCIe Gen1, Gen2, and Gen3. The CDCUN1208LP is packaged in a 32-pin VQFN (RHB) package, minimizing the solution footprint while offering extensive configuration options through pins or SPI/I2C interfaces.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| Operating Frequency (Differential Mode) | 0 | - | 400 | MHz |
| Operating Frequency (LVCMOS Mode) | 0 | - | 250 | MHz |
| Supply Voltage | 1.8 | - | 3.3 | V |
| Temperature Range | -40 | - | 85 | °C |
| ESD Protection | - | - | 2 kV HBM, 500 V CDM | - |
| Additive Jitter (LVDS at 100 MHz) | - | 200 | - | fs RMS |
| Additive Jitter (HCSL at 100 MHz) | - | 160 | - | fs RMS |
| Package Type | - | - | 32-pin VQFN (RHB) | - |
Key Features
- Universal inputs and outputs supporting HCSL, LVDS, and LVCMOS signal types
- Configuration options through pins or SPI/I2C interfaces for input type, output type, signal edge rate, and clock input divide value (/1, /2, /4, /8)
- Low-power consumption and power management features, including 1.8-V operation and output enable control
- Integrated voltage regulators to improve PSNR
- Excellent additive jitter performance
- ESD protection exceeding 2-kV HBM and 500-V CDM
- Industrial temperature range (-40°C to 85°C)
- Wide supply range (1.8 V, 2.5 V, or 3.3 V)
Applications
- Communications and Computing Systems
- Factory Automation and Control
- Medical Imaging
- Pro Audio, Video, and Signage
- Motor Drives
Q & A
- What is the CDCUN1208LP used for?
The CDCUN1208LP is a 2:8 fan-out buffer used for distributing clock signals in various applications, including communications, computing, factory automation, medical imaging, and more.
- What types of input and output signals does the CDCUN1208LP support?
The CDCUN1208LP supports HCSL, LVDS, and LVCMOS input and output signal types.
- What is the maximum operating frequency of the CDCUN1208LP?
The maximum operating frequency is up to 400 MHz in differential mode and up to 250 MHz in LVCMOS mode.
- How is the CDCUN1208LP configured?
The device can be configured through pins or using a SPI/I2C interface.
- What are the power management features of the CDCUN1208LP?
The device features low-power consumption, 1.8-V operation, and output enable control.
- What is the temperature range of the CDCUN1208LP?
The device operates within an industrial temperature range of -40°C to 85°C.
- What kind of ESD protection does the CDCUN1208LP offer?
The CDCUN1208LP offers ESD protection exceeding 2-kV HBM and 500-V CDM.
- What is the package type of the CDCUN1208LP?
The device is packaged in a 32-pin VQFN (RHB) package.
- What are the additive jitter specifications of the CDCUN1208LP?
The device has an additive jitter of 200 fs RMS for LVDS at 100 MHz and 160 fs RMS for HCSL at 100 MHz.
- Can the CDCUN1208LP support different power supply domains for output ports?
Yes, the device includes four dedicated supply pins enabling the operation of output ports from different power supply domains.
