2308-1DCG8

Overview

The IDT2308-1DCG8 is a high-speed phase-lock loop (PLL) clock multiplier designed for zero-delay clock distribution and multiplication applications. It operates within an input frequency range of 10MHz to 133MHz, aligning the phase between the incoming clock and output clock to achieve zero delay. The device features two banks of four outputs each, controlled via select addresses, with separate output enable capabilities for each bank. It supports 1x multiplication options and requires no external RC network. The component operates at 3.3V VDD and is characterized for commercial operation temperatures.

Feature Summary

• Zero-delay PLL architecture synchronizes outputs to the clock input using an external feedback pin
• Distributes one clock input to two banks of four LVCMOS outputs
• Low jitter performance with cycle-to-cycle jitter less than 200 ps
• Output skew specification of less than 200 ps

Applications

• High-speed clock distribution systems
• Clock multiplication applications requiring zero delay
• Systems operating within 10MHz to 133MHz frequency ranges

Procurement Notes

Verify the specific suffix 'DCG8' corresponds to the 8-pin SOIC package with a pitch of 1.27mm and dimensions of 4.9 x 3.9 x 1.5mm. Confirm that the '1' in the base part number indicates the 1x multiplication configuration. Ensure compatibility with 3.3V supply voltage requirements and check for lead-free status if required by assembly specifications.

Selection Notes

Select this component when a single clock source needs to be distributed to multiple loads with minimal skew and jitter. The 2308-1 variant is appropriate for designs requiring only 1x frequency multiplication. Consider the 8-pin SOIC package constraints and ensure the PCB layout accommodates the external feedback loop necessary for zero-delay operation. Verify that the input signal meets the LVCMOS/LVTTL input type requirements.

Part Context

The 2308 series comprises zero-delay clock multipliers available in various configurations including 1x, 2x, and 4x multiplication options. The -1 suffix denotes the 1x multiplier version. Other variants like the 2308-2 or 2308-3 offer different prescaling and multiplication combinations. The DCG8 package code identifies the standard 8-lead Small Outline Integrated Circuit (SOIC) form factor used across several Renesas/IDT timing devices.

Replacement Considerations

Direct substitutes include other members of the 2308 family such as IDT2308-2DCI8 or IDT2308-3DCI8, provided the multiplication ratio matches system requirements. Alternative packages like TSSOP may require footprint adaptation. Verify that any replacement maintains the same 3.3V operating voltage and 10-133MHz frequency range.