IDT2308B-4DC

Clock Generators, PLLs, Frequency Synthesizers Overview

The IDT2308B-4DC is a high-speed phase-lock loop (PLL) clock multiplier manufactured by Renesas Electronics. It operates within a frequency range of 10 MHz to 133 MHz and provides a 2x multiplication ratio for the input reference clock. The device features zero delay buffer functionality, aligning the phase between the incoming clock and output signals. It includes two banks of four outputs each, with separate enable controls for each bank. Key performance metrics include an output skew of less than 200 ps and cycle-to-cycle jitter under 200 ps. The component functions at a supply voltage of 3.3V and is available in SOIC packages.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Zero delay PLL architecture synchronizes output phase with the REF input
• Fixed 2x multiplication ratio for input clock frequencies up to 133 MHz
• Dual output banks with independent tri-state control capabilities
• Low jitter specification (<200 ps cycle-to-cycle) and low output skew (<200 ps)

Clock Generators, PLLs, Frequency Synthesizers Applications

• High-speed clock distribution networks
• Clock multiplication and buffering in communication systems
• System synchronization requiring precise phase alignment

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

This component is classified as obsolete by the manufacturer. Availability is restricted to existing stock or secondary market sources. Verification of lot history, moisture sensitivity level status, and lead integrity is essential before procurement due to the end-of-life status. Designers should assess long-term supply risks associated with discontinued parts.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this part when a fixed 2x clock multiplication is required without external programming. Ensure the application supports the commercial temperature range of 0°C to +70°C. Verify that the 3.3V logic levels match the system requirements. Consider the 2308B family variants if different multiplication ratios or drive strengths are needed.

Clock Generators, PLLs, Frequency Synthesizers Part Context

The IDT2308B-4DC belongs to the 2308B series of zero-delay clock multipliers. This series offers various configurations including 1x, 2x, and 4x multiplication options. The '4' suffix specifically denotes the 2x multiplication configuration. The device utilizes an external feedback pin to close the PLL loop, allowing flexibility in controlling the delay between input and output clocks.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Renesas recommends the 2308B series for new designs, though specific pin-compatible substitutes depend on the exact multiplication requirement. Verify electrical compatibility and package dimensions when evaluating alternative clock generators from other manufacturers.