Overview
The SN65LVDS20DRFT, produced by Texas Instruments, is a high-speed differential receiver and driver connected as a repeater. This device is designed to accept low-voltage positive-emitter-coupled logic (PECL) input signals and repeat them as either LVDS or PECL output signals. The SN65LVDS20 is optimized for signaling rates up to 4 Gbps and clock rates up to 2 GHz, making it suitable for high-speed data and clock signal applications. The device features a differential signal path to minimize radiated emissions and added jitter, and it operates over a temperature range of -40°C to 85°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | WSON (DRF) | - |
| Pins | 8 | - |
| Operating Temperature Range | -40 to 85 | °C |
| Supply Voltage | 2.5 V or 3.3 V | V |
| Signaling Rates | Up to 4 Gbps | - |
| Clock Rates | Up to 2 GHz | - |
| Output Transition Times | 120 ps | ps |
| Total Jitter | Less than 45 ps | ps |
| Propagation Delay Times | Less than 630 ps | ps |
| Package Size | 2-mm x 2-mm | - |
| Characteristic Impedance | Nominally 100 Ω | Ω |
Key Features
- Low-Voltage PECL Input and Low-Voltage PECL or LVDS Outputs
- Signaling Rates to 4 Gbps or Clock Rates to 2 GHz
- 120-ps Output Transition Times
- Less than 45 ps Total Jitter
- Less than 630 ps Propagation Delay Times
- 2.5-V or 3.3-V Supply Operation
- 2-mm x 2-mm Small-Outline No-Lead Package
- Provides a voltage reference (VBB) for receiving single-ended PECL input signals
- Outputs designed to drive differential transmission lines with nominally 100-Ω characteristic impedance
Applications
- PECL-to-LVDS Translation
- Data or Clock Signal Amplification
Q & A
- What is the primary function of the SN65LVDS20DRFT?
The SN65LVDS20DRFT is a high-speed differential receiver and driver connected as a repeater, designed to accept low-voltage PECL input signals and repeat them as either LVDS or PECL output signals.
- What are the signaling rates supported by the SN65LVDS20DRFT?
The device supports signaling rates up to 4 Gbps and clock rates up to 2 GHz.
- What is the operating temperature range of the SN65LVDS20DRFT?
The device operates over a temperature range of -40°C to 85°C.
- What are the supply voltage options for the SN65LVDS20DRFT?
The device can operate with supply voltages of 2.5 V or 3.3 V.
- What is the characteristic impedance of the differential transmission lines driven by the SN65LVDS20DRFT?
The outputs are designed to drive differential transmission lines with nominally 100-Ω characteristic impedance.
- How does the SN65LVDS20DRFT minimize radiated emissions and added jitter?
The device features a differential signal path to minimize radiated emissions and added jitter.
- What is the purpose of the VBB voltage reference in the SN65LVDS20DRFT?
The VBB voltage reference is provided for receiving single-ended PECL input signals.
- How do you enable or disable the outputs of the SN65LVDS20DRFT?
A low-level input to EN enables the outputs, while a high-level input puts the output into a high-impedance state.
- What are the typical output transition times and total jitter of the SN65LVDS20DRFT?
The device has output transition times of 120 ps and total jitter of less than 45 ps.
- What are the common applications of the SN65LVDS20DRFT?
The device is commonly used for PECL-to-LVDS translation and data or clock signal amplification.
