ICS954148AF

Overview

The ICS954148AF is a Timing Control Hub (TCH) integrated circuit designed for Intel P4 platform applications. It serves as a single-chip clock solution, providing necessary timing signals for systems utilizing the Intel Brookdale chipset with PC133 or DDR memory. The device operates on a 3.3V supply voltage and supports surface-mount installation in a 56-BSSOP package. It functions without an internal Phase-Locked Loop (PLL), relying on external crystal inputs to generate precise clock outputs for CPU and peripheral synchronization.

Feature Summary

• Designed specifically for Intel P4 architecture and Brookdale chipset compatibility
• Integrates Timing Control Hub technology for centralized clock management
• Operates at 3.3V supply voltage with 0°C to +70°C industrial temperature range
• housed in a 56-lead BSSOP surface-mount package

Applications

• Desktop computer motherboards based on Intel P4 platforms
• Systems utilizing Intel Brookdale chipset architecture
• Memory subsystems requiring PC133 or DDR clock generation

Procurement Notes

Verify component authenticity through authorized Renesas distributors. Confirm package integrity for the 56-SSOP form factor prior to assembly. Ensure design compatibility with Intel P4 platform specifications. Check for end-of-life status or alternative recommendations from the manufacturer before finalizing procurement plans.

Selection Notes

Select this component when designing for legacy Intel P4 architectures requiring dedicated clock distribution. Verify that the system does not require an internal PLL, as this device lacks one. Ensure the PCB layout accommodates the 56-SSOP footprint and that the 3.3V power rail meets the specific current requirements of the TCH circuitry.

Part Context

The ICS954148AF belongs to the Timing Control Hub (TCH) family introduced by Integrated Circuit Systems (ICS), now part of Renesas Electronics. This series was developed to simplify motherboard design by integrating multiple clock generators and buffers into a single programmable device, reducing component count and board space for high-performance desktop processors.

Replacement Considerations

Consult Renesas official documentation for direct pin-compatible replacements. Evaluate newer TCH series devices if available, ensuring support for the target Intel chipset. Verify that any substitute maintains the 56-SSOP package and 3.3V operation constraints.