9DB104BFLFT

Application Specific Clock/Timing Overview

The ICS9DB104 is a four-output differential buffer compliant with the Intel DB400 specification, designed for PCI-Express and next-generation I/O devices. It operates at frequencies up to 200MHz with cycle-to-cycle jitter under 50ps and output skew under 50ps. The device provides four 0.7V current-mode differential output pairs and supports zero-delay buffer or fanout modes via the BYPASS#/PLL pin. Powered by a nominal 3.3V supply, it features SMBus configuration, spread spectrum modulation tolerance, and power management controls including PD# and SRC_STOP#. Available in 28-pin SSOP and TSSOP packages.

Application Specific Clock/Timing Feature Summary

• Four 0.7V current-mode differential output pairs supporting up to 200MHz operation
• Compliance with Intel DB400 Differential Buffer Specification for PCI-Express
• Cycle-to-cycle jitter < 50ps and output skew < 50ps
• SMBus serial interface for frequency selection and bandwidth programming
• Spread spectrum modulation tolerant (0 to -0.5% down spread, +/- 0.25% center spread)

Application Specific Clock/Timing Applications

• PCI-Express clock distribution
• Next generation I/O devices
• Server systems requiring tight ppm accuracy clocks

Application Specific Clock/Timing Procurement Notes

Verify package type availability as the component is marked 'Not recommended for new designs'. Confirm RoHS compliance status through ordering suffixes (LF/LN). Check manufacturer documentation for end-of-life status and potential obsolescence before procurement planning.

Application Specific Clock/Timing Selection Notes

Select based on required output count (four differential pairs) and operating frequency (up to 200MHz). Ensure input clock source compatibility with CK409/CK410 generators. Choose between SSOP (F) or TSSOP (G) packages based on board space constraints. Verify SMBus controller compatibility for configuration.

Application Specific Clock/Timing Part Context

Manufactured by Integrated Circuit Systems, Inc. (ICS), this part belongs to the 9DB series of PLL-based clock drivers. It serves as a buffer for main clock generators like the ICS952601 or ICS95410. The device is now under Renesas Electronics Corporation following acquisitions.

Application Specific Clock/Timing Replacement Considerations

Public confirmed substitute part numbers are not available in the provided datasheet. Consult manufacturer documentation for legacy replacement recommendations.