Clock-tree workhorse: one in, six out
The Texas Instruments PLL1700EG4 is a PLL-based multi-clock generator that takes a single TTL reference input and delivers six CMOS clock outputs, each phase-locked to the input. The 1:6 fanout ratio means this single 20-SSOP device replaces a separate PLL plus a clock buffer, saving board area and reducing jitter accumulation from cascaded stages.
The maximum output frequency of 36.87 MHz sets the upper bound for the clock tree. If your system has a 50 MHz Ethernet MAC or a 48 kHz audio master clock derived from a PLL, this part covers the audio and lower-speed serial interfaces but not the gigabit Ethernet or high-speed ADC clock domains. The 36.87 MHz ceiling is typical for multi-clock generators targeting audio codecs, set-top boxes, and industrial control where the fastest peripheral clock is the SPI bus or the audio bit clock.
This dual-voltage flexibility is useful when the PLL sits on a mixed-voltage board: the core logic runs at 3.3 V while legacy peripheral interfaces still use 5 V.
Temperature grade: indoor industrial, not under-hood
If your design must survive a cold start at -40°C, look at the industrial-temperature variants in the PLL1700 family.
For a new design, this means you can commit the BOM line without worrying about a sudden obsolescence-driven redesign.