8T39S11ANLGI

Clock Buffers, Drivers Overview

The 8T39S11ANLGI is a high-performance clock fanout buffer and multiplexer manufactured by Renesas Electronics. It features a 3:11 input-to-output ratio, accepting differential or crystal inputs and distributing them to ten differential outputs plus one single-ended reference output. The device supports maximum frequencies of 2 GHz for LVPECL and LVDS outputs, and 250 MHz for HCSL outputs. It operates on a supply voltage range of 2.375V to 3.465V within an ambient temperature range of -40°C to 85°C. Packaged in a 48-VFQFPN (7x7 mm) with an exposed pad, it is designed for low phase noise applications.

Clock Buffers, Drivers Feature Summary

• Supports input selection from two differential pairs or a crystal oscillator interface.
• Provides ten configurable differential outputs (LVPECL, LVDS, HCSL) and one single-ended reference output.
• Achieves low additive RMS phase jitter of 26 fs at 156.25 MHz.
• Features synchronous output enable to prevent clock glitches during switching.

Clock Buffers, Drivers Applications

• High-frequency clock distribution in data communications systems
• Timing synchronization for networking equipment
• Low jitter clock buffering for high-speed digital circuits

Clock Buffers, Drivers Procurement Notes

Verify the component status as obsolete before procurement planning. Confirm package dimensions match the 48-VFQFPN (7x7 mm) specification with a 0.5 mm pitch. Ensure compatibility with the specified 2.375V to 3.465V supply voltage range and -40°C to 85°C operating temperature limits for the target application environment.

Clock Buffers, Drivers Selection Notes

Select this component when a 3:11 fanout ratio with mixed input/output levels is required. It is suitable for designs needing up to 2 GHz differential output frequency. Consider the pin-selectable configuration options for output types. Verify that the system can accommodate the specific power supply modes and thermal requirements associated with the VFQFPN package.

Clock Buffers, Drivers Part Context

This part belongs to the 8T39S family of clock buffers. It shares architectural similarities with variants like the 8T39S11A but differs in packaging and suffix designation. The NLGI suffix indicates the specific tray packaging and lead-free composition. It serves as a direct replacement for legacy components requiring similar fanout capabilities in high-speed timing applications.

Clock Buffers, Drivers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Due to the obsolete status, alternative sourcing requires verification of functional equivalence with current Renesas inventory or third-party compatible devices.