2308B-1HPGG

Overview

The Renesas Electronics Corporation 2308B-1HPGG is a 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 clocks, operating within an input frequency range of 10 MHz to 133 MHz. The device features two banks of four outputs each, controlled via select addresses, with separate output enable capabilities for each bank. It achieves low jitter performance, specifically less than 200 ps cycle-to-cycle peak-to-peak jitter, and maintains output skew under 200 ps. The component operates at 3.3V VDD and is available in TSSOP packages.

Feature Summary

• Zero-delay PLL architecture synchronizes output phases directly to the input clock reference
• Distributes one clock input to two independent banks of four CMOS/TTL outputs
• Low jitter specification of less than 200 ps cycle-to-cycle peak-to-peak
• External feedback pin allows user control over delay between input and outputs

Applications

• High-speed clock distribution networks requiring precise phase alignment
• System synchronization where zero-delay multiplication is critical
• Test mode operation allowing direct input clock drive to outputs for verification

Procurement Notes

Verify the specific suffix '1HPGG' against official Renesas documentation to confirm package type and electrical characteristics, as suffixes define physical form factors. Confirm current production status, as this part number may be obsolete or superseded by newer revisions. Ensure compatibility with 3.3V logic levels and check for any required external components for the PLL loop filter.

Selection Notes

Select this component when a 1x multiplication factor is required alongside zero-delay phase alignment. Verify that the 10 MHz to 133 MHz input frequency range matches the system reference clock. Ensure the design accommodates the TSSOP-16 package dimensions and pitch. Check if the separate output bank enable feature meets the power management requirements for unused outputs.

Part Context

The 2308B series comprises multiple configurations offering different prescaling and multiplication options (1x, 2x, 4x). The 2308B-1 variant specifically provides a 1x output ratio. Other variants like 2308B-2 or 2308B-3 offer higher multiplication factors. The 'H' designation typically indicates high-drive output capability compared to standard variants.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult Renesas Electronics for current active replacements or cross-reference with similar zero-delay clock multipliers from other manufacturers if obsolescence is confirmed.