PRL-171/172/173 TTL XTAL Clock Generators 

Basic Lab Tools > Clock Sources > PRL-171/172/173 

Applications:

• Precision Clock Source for High Speed 
  Digital systems
• 1:4 Fanout Clock Generator, PRL-171
• 4-Φ Clock Generator, PRL-172 
• 2-Φ Clock Generator, PRL-173
• An Essential Lab Tool for Working with CMOS/TTL Circuits

Features:

• 50 ps typical Edge Jitter
• 750 ps typical skew between any two outputs
• 2, 5, 10, 20, 50, and 100 MHz crystal frequencies in stock
• Custom crystal frequencies also available
• 50 Ω back matched Outputs drive 50 Ω loads or unterminated long lines
• DC coupled Outputs
• SMA Output Connectors
• Ready-to-Use 1.3 x 2.9 x 2.9-in. module includes a ±8.5V AC/DC Adapter

*For custom crystals, order the -XXX model and enter the desired frequency in the "Special Instructions" box of the order form. Pricing varies by xtal, but is typically ≤ the listed price. We will send a final quotation by email, which you must confirm before we will process your order.

Description

The PRL-171, -172 and -173 are ready-to-use TTL crystal clock source modules with 50 Ω back terminated outputs. They are designed for driving long lines with or without 50 Ω terminations.

The PRL-171 buffers an internal crystal clock and fans out into four identical outputs. The PRL-172 converts the internal crystal clock frequency f into 4-Φ clock outputs of f, f/2, f/4, and f/8. The PRL-173 has 2-Φ clock outputs of f and f/5.

The maximum frequency output of the PRL-171 is 100 MHz and those of the PRL-172 and PRL-173 are 50 MHz. Standard crystal frequencies provided are 2 MHz, 5 MHz, 10 MHz, 20 MHz, 50 MHz and 100 MHz. Other crystal frequencies are also available.

To specify the output frequencies desired, a three digit number, -XXX should follow the model number, where XXX represents the maximum output frequency. For example, the PRL-171-100 has four 100 MHz outputs, and the PRL-172-40 has 40 MHz, 20 MHz, 10 MHz and 5 MHz outputs. Similarly, the PRL-172-50 has 50 MHz and 5 MHz outputs.

Each clock source module is housed in a 1.3 x 2.9 x 2.9-in. extruded aluminum enclosure and is supplied with a ±8.5V AC/DC Adapter.

If mounting is desired, a pair of 35001420 mounting brackets can accommodate two PRL modules of the same length. A number of PRL modules can also share a single ±8.5V AC/DC adapter using the PRL-730 voltage distribution module. Please see the Accessories Section for more detail.

Detail | Diagram | Specifications | Datasheet