Overview
The NB3L202KMNG is a differential 1:2 clock fanout buffer produced by onsemi. This component is designed with High-speed Current Steering Logic (HCSL) outputs and is optimized for ultra-low phase noise, propagation delay variation, and low output-to-output skew. It is particularly suited for distributing low skew clocks across backplanes or motherboards, making it ideal for various high-speed applications.
The device can accept differential LVPECL, LVDS, and HCSL input signals, and it can also handle single-ended LVPECL, HCSL, LVCMOS, or LVTTL levels with an appropriate external Vth reference supply. The NB3L202KMNG operates up to 350 MHz and is compliant with DB200H and PCIe Gen 3 and Gen 4 standards.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Maximum Input Clock Frequency | > 350 | MHz |
| Supply Voltage Operation | 2.5 V ±5% / 3.3 V ±10% | V |
| Number of HCSL Outputs | 2 | |
| Output-to-Output Skew | 100 ps (Max) | ps |
| Propagation Delay | 1 ns (Typical) | ns |
| Rise and Fall Times | 500 ps (Typical) | ps |
| Additive RMS Phase Jitter | 80 fs (Maximum) | fs |
| Ambient Operating Temperature | -40°C to +85°C | °C |
| Package Type | QFN 16-pin, 3 mm x 3 mm | |
| RoHS Compliance | Yes |
Key Features
- High-speed Current Steering Logic (HCSL) outputs
- Accepts differential LVPECL, LVDS, and HCSL input signals
- Supports single-ended LVPECL, HCSL, LVCMOS, or LVTTL levels with external Vth reference
- Individual OE control pin for each output
- DB200H compliant and supports PCIe Gen 3 and Gen 4
- Ultra-low phase noise and propagation delay variation
- Low output-to-output skew of 100 ps (Max)
- Operating temperature range of -40°C to +85°C
- Pb-free and RoHS compliant
Applications
- PCI Express
- FBDIMM (Fully Buffered DIMM)
- Mobile Computing
- Networking
- Gigabit Ethernet
Q & A
- What is the maximum input clock frequency of the NB3L202KMNG?
The maximum input clock frequency is greater than 350 MHz.
- What are the supported supply voltage ranges for the NB3L202KMNG?
The device operates at 2.5 V ±5% and 3.3 V ±10% supply voltage.
- How many HCSL outputs does the NB3L202KMNG have?
The device has 2 HCSL outputs.
- What is the maximum output-to-output skew of the NB3L202KMNG?
The maximum output-to-output skew is 100 ps.
- What is the typical propagation delay of the NB3L202KMNG?
The typical propagation delay is 1 ns.
- What is the typical rise and fall time of the NB3L202KMNG?
The typical rise and fall time is 500 ps.
- What is the maximum additive RMS phase jitter of the NB3L202KMNG?
The maximum additive RMS phase jitter is 80 fs.
- What is the operating temperature range of the NB3L202KMNG?
The operating temperature range is -40°C to +85°C.
- Is the NB3L202KMNG RoHS compliant?
Yes, the device is Pb-free and RoHS compliant.
- What are some typical applications of the NB3L202KMNG?
Typical applications include PCI Express, FBDIMM, Mobile Computing, Networking, and Gigabit Ethernet.
