2308A-1DCGI

Overview

The 2308A-1DCGI is a 3.3V Zero Delay Clock Multiplier manufactured by Renesas Electronics Corporation, belonging to the 2308 family. It functions as a high-speed phase-lock loop (PLL) device designed for clock distribution and multiplication applications operating between 10MHz and 133MHz. The component features zero delay characteristics achieved by aligning the phase of the incoming clock with the output clock. It accepts one reference input and distributes it to two banks of four outputs each, totaling eight outputs. The device operates at a core voltage of 3.3V and is housed in a 16-pin SOIC package.

Feature Summary

• Zero Delay PLL Architecture: Aligns output phase with input clock to eliminate propagation delay within the 10MHz to 133MHz range.
• Dual Output Banks: Distributes one input clock to two independent banks of four outputs, allowing separate enable control for each bank.
• Low Skew and Jitter: Specifies output skew less than 200 ps and cycle-to-cycle jitter less than 200 ps.
• External Feedback Loop: Utilizes an external feedback (FBK) pin to synchronize outputs to the clock input, providing user-controlled delay flexibility.

Applications

• High-speed clock distribution systems requiring precise phase alignment.
• Multiplication of reference clocks for digital logic and processors.
• System testing modes where PLL bypass allows direct input clock drive to outputs.

Procurement Notes

Verify current availability status as the 2308 series may be subject to discontinuation or lifecycle changes. Confirm moisture sensitivity level (MSL) and reflow soldering profiles prior to assembly. Ensure the specific -1 suffix configuration matches the required 1x multiplication factor. Check for RoHS compliance documentation corresponding to the manufacturing date code.

Selection Notes

Select the 2308A-1DCGI when a single frequency multiplication ratio (1x) is required alongside low skew distribution. Compare against the 2308B series if industrial temperature ranges (-40°C to +85°C) are necessary, as the 'A' designation typically implies commercial range. Verify that the 16-pin SOIC footprint fits the PCB layout constraints compared to TSSOP alternatives.

Part Context

The 2308A-1DCGI is part of the broader 2308/2308B family of zero delay clock multipliers from Integrated Device Technology (IDT), now under Renesas Electronics. This family includes variants with different multiplication factors (1x, 2x, 4x) and drive strengths (standard vs. high drive). The 'DCGI' suffix denotes the SOIC-16 package, commercial temperature range, and lead-free composition.

Replacement Considerations

Direct substitutes include other members of the 2308 family such as IDT2308-1DCG or IDT2308-1DCGI. For industrial temperature requirements, consider the 2308B-1DCGI variant. Cross-reference with the 2309 series if buffering without multiplication is sufficient, noting the pinout compatibility differences.