Overview
The NB4N840MMNG is a high-bandwidth, fully differential dual 2 x 2 crosspoint switch produced by onsemi. This device is designed with CML (Current Mode Logic) inputs and outputs, making it suitable for high-speed applications such as SDH/SONET, DWDM, Gigabit Ethernet, and high-speed switching. The fully differential design minimizes jitter accumulation, crosstalk, and signal skew, which is crucial for loop-through and protection channel switching applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Maximum Input Clock Frequency | 2.7 | GHz |
| Maximum Input Data Frequency | 3.2 | Gb/s |
| Typical Propagation Delay | 225 | ps |
| Typical Rise and Fall Times | 80 | ps |
| Channel to Channel Skew | 7 | ps |
| RMS Jitter | < 0.5 | ps |
| Peak-to-Peak Data Dependent Jitter | 7 | ps |
| Power Consumption | 430 | mW |
| Operating Voltage Range | 3.0 to 3.6 | V |
| Operating Temperature Range | -40 to +85 | °C |
| Package Type | 5 x 5 mm 32-pin QFN |
Key Features
- Plug-in compatible to the MAX3840 and SY55859L
- Internally terminated differential CML inputs and outputs, eliminating the need for external components
- Single-ended LVCMOS/LVTTL SEL inputs for signal routing control
- Configurable as 1:2 fan-out, repeater, or 2 x 2 crosspoint switch
- Power saving feature with disabled outputs
- Differential 16 mA CML outputs with 400 mV output swings when externally terminated
- Low profile 5 x 5 mm 32-pin QFN package
Applications
- SDH/SONET systems
- DWDM (Dense Wavelength Division Multiplexing) systems
- Gigabit Ethernet
- High-speed switching applications
- Loop-through and protection channel switching
Q & A
- What is the maximum input clock frequency of the NB4N840MMNG?
The maximum input clock frequency is 2.7 GHz.
- What is the maximum input data frequency of the NB4N840MMNG?
The maximum input data frequency is 3.2 Gb/s.
- What is the typical propagation delay of the NB4N840MMNG?
The typical propagation delay is 225 ps.
- What is the channel to channel skew of the NB4N840MMNG?
The channel to channel skew is 7 ps.
- What is the RMS jitter of the NB4N840MMNG?
The RMS jitter is less than 0.5 ps.
- What is the power consumption of the NB4N840MMNG when all outputs are enabled?
The power consumption is approximately 430 mW.
- What is the operating voltage range of the NB4N840MMNG?
The operating voltage range is from 3.0 V to 3.6 V.
- What is the operating temperature range of the NB4N840MMNG?
The operating temperature range is from -40°C to +85°C.
- What package type is the NB4N840MMNG available in?
The device is housed in a 5 x 5 mm 32-pin QFN package.
- Is the NB4N840MMNG Pb-free?
