MPC9893AE

Overview

The MPC9893AE is a 2.5 V and 3.3 V compatible, PLL-based intelligent dynamic clock switch and generator designed for redundant clock distribution systems. It accepts two LVCMOS reference clock inputs and generates 12 phase-aligned outputs organized into two banks. The device features an on-chip Intelligent Dynamic Clock Switch (IDCS) that automatically detects failing reference clocks and switches to a redundant signal without output interruption or phase bumps. Operating within a frequency range of 7.5 MHz to 200 MHz, it provides low skew characteristics with a maximum output-to-output skew of 50 ps within a bank.

Feature Summary

• Intelligent Dynamic Clock Switch (IDCS) enables seamless failover between redundant LVCMOS clock inputs without phase bumps.
• Generates 12 phase-aligned LVCMOS outputs across two configurable banks supporting frequencies from 7.5 MHz to 200 MHz.
• Supports zero-delay configurations via external feedback connection between QFB and FB pins.
• Includes manual test mode (PLL bypass) and individual output enable/disable capabilities.

Applications

• Redundant clock distribution in telecommunications infrastructure
• High-performance networking equipment requiring synchronized clock sources
• Computer systems utilizing nested clock trees with zero-insertion delay requirements

Procurement Notes

Verify the specific suffix 'AE' corresponds to the 48-lead Pb-free LQFP package (Case 932-03). Confirm ambient operating temperature range is -40 °C to 85 °C. Ensure power supply filtering is implemented on the VCC_PLL pin using an RC filter to isolate analog noise, as specified in the application guidelines.

Selection Notes

Select this component when designing systems requiring automatic redundancy switching between two clock sources. Verify that the required output frequency falls within the 7.5–200 MHz range. Consider the internal VCO frequency and PLL feedback divider configuration if minimizing I/O jitter is critical for the specific application timing constraints.

Part Context

The MPC9893 belongs to the Advanced Clock Drivers family from Freescale Semiconductor. It is specifically engineered for applications demanding high reliability and precise timing synchronization. The device integrates both digital logic for clock switching and analog PLL circuitry to maintain signal integrity across varying load conditions.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Evaluate alternative clock generators based on LVCMOS compatibility, IDCS functionality, and package dimensions (48-lead LQFP).