Overview
The onsemi NB7L14MMNG is a high-performance differential 1:4 LVPECL fanout buffer, part of the GigaComm™ family of clock products. This component is designed to produce four identical LVPECL output copies of clock or data signals, operating up to 7 GHz or 10.7 Gbps, respectively. It is ideal for applications requiring precise clock and data distribution, such as SONET, GigE, Fiber Channel, and backplane systems. The device features internal 50 Ω termination resistors and a VREFAC reference output for rebiasing capacitor-coupled differential or single-ended input signals.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Package | QFN-16-EP(3x3) | |
| Input Clock Frequency | Maximum input clock frequency | 7 GHz |
| Input Data Rate | Maximum operating data rate (NRZ, PRBS23) | 10.7 Gbps |
| Propagation Delay | Typical propagation delay from input to output | 165 ps |
| Rise and Fall Times | Typical rise and fall times | 45 ps |
| Output Skew | Maximum output skew within the device | <15 ps |
| Clock Jitter | Maximum RMS random clock jitter | <0.8 ps |
| Data Dependent Jitter | Maximum data dependent jitter | <15 ps pp |
| Output Voltage Amplitude | Typical output voltage amplitude (LVPECL) | 720 mV peak-to-peak |
| Supply Voltage Range | LVPECL operating range | 2.375 V to 3.6 V |
| Operating Temperature | Ambient operating temperature range | −40°C to +85°C |
| Compliance | RoHS compliance | Pb-free and RoHS compliant |
Key Features
- Differential 1:4 LVPECL fanout buffer with high-speed operation up to 7 GHz or 10.7 Gbps.
- Internal 50 Ω termination resistors for differential inputs.
- VREFAC reference output for rebiasing capacitor-coupled differential or single-ended input signals.
- Low output skew and jitter, making it suitable for low skew applications.
- Multi-level inputs compatible with LVPECL, CML, LVDS, LVCMOS, and LVTTL logic levels.
- Functionally compatible with existing 2.5 V/3.3 V LVEL, LVEP, EP, and SG devices.
- Pb-free and RoHS compliant, with an operating temperature range of −40°C to +85°C.
Applications
- SONET (Synchronous Optical Networking) systems.
- Gigabit Ethernet (GigE) applications.
- Fiber Channel systems.
- Backplane and other clock or data distribution systems.
- High-speed data communication and networking equipment.
Q & A
- What is the maximum input clock frequency of the NB7L14MMNG?
The maximum input clock frequency is 7 GHz.
- What is the maximum operating data rate of the NB7L14MMNG?
The maximum operating data rate is 10.7 Gbps (NRZ, PRBS23).
- What is the typical propagation delay of the NB7L14MMNG?
The typical propagation delay is 165 ps.
- What is the output voltage amplitude of the LVPECL outputs?
The typical output voltage amplitude is 720 mV peak-to-peak.
- Is the NB7L14MMNG RoHS compliant?
- What is the operating temperature range of the NB7L14MMNG?
The ambient operating temperature range is −40°C to +85°C.
- What types of logic levels are supported by the NB7L14MMNG?
The device supports LVPECL, CML, LVDS, LVCMOS, and LVTTL logic levels.
- What is the purpose of the VREFAC reference output?
The VREFAC reference output is used to rebias capacitor-coupled differential or single-ended input signals.
- What is the significance of internal 50 Ω termination resistors in the NB7L14MMNG?
The internal 50 Ω termination resistors allow the device to accept various logic standards and ensure proper signal termination.
- In which applications is the NB7L14MMNG commonly used?
The device is commonly used in SONET, GigE, Fiber Channel, and backplane systems.
