83947AYI-147LF

Overview

The Renesas 83947AYI-147LF is a low skew clock fanout buffer and multiplexer IC designed for high-speed signal distribution. It accepts one input and provides nine LVCMOS/LVTTL outputs, operating at a maximum frequency of 250 MHz. The device supports core voltages of 2.5V and 3.3V, with an operating supply range of 2.375V to 3.6V. It features typical additive phase jitter of 20 fs (0.02 ps) RMS and propagation delay of 4.5 ns. Packaged in a 32-TQFP (7x7 mm) surface-mount format, it operates within a temperature range of -40°C to 85°C.

Feature Summary

• Provides one-to-nine clock fanout buffering with LVCMOS or LVTTL output compatibility
• Delivers low skew performance with minimal additive phase jitter for precise timing
• Integrates multiplexer functionality to support flexible clock routing architectures

Applications

• High-speed data acquisition systems requiring precise clock distribution
• Telecommunications infrastructure equipment
• Industrial control systems with multiple synchronized components

Procurement Notes

Verify the specific package variant and moisture sensitivity level prior to ordering. Confirm that the selected component meets the required voltage and temperature specifications for the target application environment. Ensure compliance with RoHS standards as indicated by the LF suffix. Cross-reference the datasheet for pin configuration details to guarantee correct PCB layout integration.

Selection Notes

Select this component when a single clock source must drive up to nine synchronous loads with minimal skew. It is suitable for applications requiring LVCMOS or LVTTL interface compatibility. Consider the 250 MHz maximum frequency limit and 3.3V/2.5V core voltage requirements. Evaluate the 32-TQFP package size against available board space constraints.

Part Context

This part belongs to the Renesas 83947A series of clock buffers and drivers. It is engineered for applications demanding high-frequency signal integrity and low jitter. The series supports various packaging options to accommodate different design constraints while maintaining consistent electrical performance characteristics across the product line.

Replacement Considerations

Consult official Renesas documentation for direct cross-references. Verify pin-out compatibility and electrical parameters before substituting with other clock buffer families.