The PE9945 oscillator series from Pletronics, Inc., operates at 3.3V PECL logic levels and comes in a compact 5x7mm LCC package. These oscillators are designed for precise timing requirements in a variety of digital systems. If you're working on high-speed serial communication interfaces, clock recovery circuits, or any system that needs stable, low-jitter clock signals, these oscillators are a great fit.

One thing worth noting is their small form factor; despite being tiny, they still deliver excellent stability and accuracy. This makes them ideal for space-constrained designs where you need reliable timing without the bulk of larger oscillators. Engineers tend to reach for this when they require a precise clock signal but don't want to add significant size to their board. Another practical benefit is their low power consumption, which is crucial for battery-powered devices or systems with tight power budgets.

The 3.3V PECL output is particularly handy for interfacing directly with many modern digital ICs, reducing the need for level shifters and saving on PCB real estate. Overall, the PE9945 series offers a solid balance of performance and compactness, making it a go-to choice for precision timing applications in today's dense and fast-paced digital electronics landscape.