Overview
The CDCLVD1204RGTT is a low jitter, 2-input selectable 1:4 universal-to-LVDS buffer produced by Texas Instruments. This device is designed to distribute one of two selectable clock inputs (IN0 and IN1) to four pairs of differential LVDS clock outputs (OUT0 through OUT3) with minimal skew, making it ideal for precise clock distribution in various applications. The CDCLVD1204 can accept clock inputs in LVDS, LVPECL, or LVCMOS formats and is specifically designed for driving 50-Ω transmission lines. It operates in a 2.5-V supply environment and is characterized over an industrial temperature range of –40°C to 85°C.
Key Specifications
| Parameter | Value |
|---|---|
| Package | 16-Pin VQFN (RGT) |
| Operating Temperature Range | –40°C to 85°C |
| Package Quantity | Carrier 250 (SMALL T&R) |
| Device Power Supply | 2.375 V to 2.625 V |
| Clock Frequency | Up to 800 MHz |
| Output Skew | 20 ps (Maximum) |
| Additive Jitter | <300 fs RMS in 10-kHz to 20-MHz |
| LVDS Outputs | 4 pairs, ANSI EAI/TIA-644A Standard Compatible |
| ESD Protection | Exceeds 3 kV HBM, 1 kV CDM |
Key Features
- 2:4 Differential Buffer
- Low Additive Jitter: <300 fs RMS in 10-kHz to 20-MHz
- Low Output Skew of 20 ps (Maximum)
- Universal Inputs Accept LVDS, LVPECL, and LVCMOS
- Selectable Clock Inputs Through Control Pin
- 4 LVDS Outputs, ANSI EAI/TIA-644A Standard Compatible
- Clock Frequency: Up to 800 MHz
- Device Power Supply: 2.375 V to 2.625 V
- LVDS Reference Voltage, VAC_REF, Available for Capacitive Coupled Inputs
- Industrial Temperature Range: –40°C to 85°C
- Packaged in 3 mm × 3 mm, 16-Pin VQFN (RGT)
- ESD Protection Exceeds 3 kV HBM, 1 kV CDM
Applications
- Telecommunications and Networking
- Medical Imaging
- Test and Measurement Equipment
- Wireless Communications
- General Purpose Clocking
Q & A
- What is the primary function of the CDCLVD1204RGTT? The CDCLVD1204RGTT is a clock buffer that distributes one of two selectable clock inputs to four pairs of differential LVDS clock outputs.
- What types of clock inputs does the CDCLVD1204RGTT support? The device supports LVDS, LVPECL, and LVCMOS clock inputs.
- What is the maximum clock frequency supported by the CDCLVD1204RGTT? The device supports clock frequencies up to 800 MHz.
- What is the operating temperature range of the CDCLVD1204RGTT? The device operates over an industrial temperature range of –40°C to 85°C.
- How many LVDS outputs does the CDCLVD1204RGTT provide? The device provides four pairs of differential LVDS outputs.
- What is the package type and size of the CDCLVD1204RGTT? The device is packaged in a 3 mm × 3 mm, 16-Pin VQFN (RGT).
- What is the additive jitter of the CDCLVD1204RGTT? The additive jitter is less than 300 fs RMS in the 10-kHz to 20-MHz range.
- Does the CDCLVD1204RGTT have ESD protection? Yes, the device exceeds 3 kV HBM and 1 kV CDM for ESD protection.
- How are the clock inputs selected in the CDCLVD1204RGTT? The clock inputs are selected through the IN_SEL control pin.
- What applications is the CDCLVD1204RGTT suitable for? The device is suitable for telecommunications, medical imaging, test and measurement equipment, wireless communications, and general purpose clocking.
