CY2308SC-1

Clock Generators, PLLs, Frequency Synthesizers Overview

The CY2308SC-1 is a 3.3V Zero Delay Buffer designed for high-speed clock distribution in PC, workstation, datacom, and telecom applications. It features an on-chip PLL that locks to an input clock on the REF pin, with feedback driven into the FBK pin from one of eight outputs. The device operates within a frequency range of 10 MHz to 133 MHz. Input-to-output skew is less than 350 ps, while output-to-output skew is less than 200 ps. Typical cycle-to-cycle jitter is 75 ps at 66 MHz with a 15 pF load. It includes two banks of four outputs, three-stateable by select inputs, and is available in a space-saving 16-pin SOIC package.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Zero input-output propagation delay adjustable via capacitive load on the FBK input
• Two banks of four low-skew outputs (CLKA1–4, CLKB1–4) controllable by S1/S2 select inputs
• 10 MHz to 133 MHz operating frequency range with 75 ps typical cycle-to-cycle jitter
• Power-down mode draws less than 50 μA when no rising edges are present on the REF input

Clock Generators, PLLs, Frequency Synthesizers Applications

• PC clock distribution systems
• Workstation timing circuits
• Datacom equipment synchronization
• Telecom system clocking

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation. The 'SC' suffix indicates a commercial temperature range (0°C to 70°C) and a 16-pin 150 mil SOIC package. Confirm if the 'T' suffix is required for tape-and-reel packaging or if standard tube packaging is acceptable for the design.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this part for applications requiring zero delay buffering with multiple output configurations. Ensure the load capacitance matches the datasheet requirements: up to 30 pF below 100 MHz and up to 15 pF between 100 MHz and 133 MHz. For industrial temperature ranges (-40°C to 85°C), consider the SI suffix variant instead.

Clock Generators, PLLs, Frequency Synthesizers Part Context

The CY2308 series is a family of 3.3V Zero Delay Buffers. The CY2308SC-1 represents the base configuration where output frequencies equal the reference frequency without counter division in the feedback path. It is distinct from higher-drive variants like the -1H or multiplier versions like the -2, -3, and -4.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material.