2308A-2DCGI

Overview

The Renesas 2308A-2DCGI is a discontinued 3.3V zero-delay clock multiplier designed for high-speed clock distribution and multiplication applications. It utilizes a phase-lock loop (PLL) to align the phase between the incoming clock and output clock, operating within an input frequency range of 10MHz to 133MHz. The device features two banks of four outputs each, controlled via select addresses, with separate output enable capabilities for each bank. It supports 1x and 2x multiplication options, achieves output skew of less than 200 ps, and maintains low cycle-to-cycle jitter under 200 ps. The component operates at 3.3V VDD and is available in SOIC packages.

Feature Summary

• Zero-delay PLL architecture synchronizes outputs to the input clock
• Two independent banks of four LVCMOS outputs with separate enable controls
• Supports 1x and 2x multiplication factors for input frequencies up to 133MHz
• Low jitter performance (<200 ps cycle-to-cycle) and output skew (<200 ps)
• External feedback pin allows user control over delay between input and outputs

Applications

• High-speed clock distribution systems
• Clock multiplication applications requiring precise phase alignment
• Systems utilizing 10MHz to 133MHz reference clocks

Part Context

The 2308A-2DCGI belongs to the IDT/Renesas 2308 family of zero-delay buffers. This specific suffix indicates a 1x/2x multiplication configuration housed in a 16-pin SOIC package. The 'G' suffix typically denotes lead-free composition, while 'I' indicates industrial temperature range operation. This part is distinct from the 2308B series which may offer different drive strengths or configurations.

Replacement Considerations

The 2308A-2DCGI is listed as obsolete. Potential replacements within the same functional family include the 2308B-2DCG or 23S08-2DCG, though verification of pin compatibility and electrical specifications against the original datasheet is required. No direct cross-reference is guaranteed without consulting current Renesas product guides.