MPC9817EN

Overview

The MPC9817 is a PLL-based clock generator designed for PowerQUICC and PowerPC microprocessor applications. It generates system clocks at selectable frequencies of 25, 33, 50, or 66 MHz using a 25-MHz reference input from an external source or integrated crystal oscillator. The device provides five low-skew LVCMOS processor outputs and three buffered 25-MHz reference outputs. Operating on a single 3.3V supply within an extended temperature range of -40°C to +85°C, it supports computing, networking, and telecommunications environments in a 20-lead SSOP package.

Feature Summary

• Configurable output frequencies: 25, 33, 50, or 66 MHz via FSEL pins
• Eight total LVCMOS outputs (five configurable, three fixed 25-MHz references)
• Integrated Pierce oscillator supporting 25-MHz parallel resonant crystals
• Low cycle-to-cycle jitter (150 ps) and period jitter (100 ps)

Applications

• PowerQUICC and PowerPC microprocessor clock generation
• PCI bus frequency generation (33/66 MHz)
• Telecommunications and networking equipment
• Ethernet PHY clock sourcing

Procurement Notes

Verify the manufacturer origin carefully as the datasheet indicates Freescale Semiconductor was acquired by Integrated Device Technology (IDT). Confirm RoHS compliance status and lead-free packaging availability with current suppliers, as legacy stock may differ from modern production runs.

Selection Notes

Select this component when a 3.3V supply and specific 25/33/50/66 MHz outputs are required for Power architecture systems. Ensure the design accommodates the 20-SSOP footprint and utilizes the FSEL pin configuration for the desired frequency bank. Verify crystal load capacitance requirements if using the internal oscillator.

Part Context

Originally manufactured by Freescale Semiconductor, this part belongs to the IDT NetCOM family of clock generators following the acquisition of Freescale's Timing Solutions Organization. It serves as a specialized timing solution for embedded processing systems requiring precise multi-frequency clock distribution.

Replacement Considerations

Check for updated revisions from IDT or Renesas. No direct public substitute part numbers are confirmed in the provided documentation.