8P34S1102NLGI

Clock Buffers, Drivers Overview

The 8P34S1102NLGI is a high-performance differential LVDS fanout buffer designed for distributing 1PPS signals or high-frequency, low additive phase-noise clock and data signals. It features one differential input pair (CLK, nCLK) and two low skew output pairs (Q0, nQ0; Q1, nQ1). The device supports fail-safe operation and operates from a full 1.8V or 2.5V power supply. Key electrical parameters include a maximum input frequency of 1.5 GHz, typical output skew of 3 ps, maximum propagation delay of 400 ps, and typical RMS additive phase jitter of 34 fs at 156.25 MHz. It is housed in a lead-free 16-lead VFQFPN package with an operating temperature range of -40°C to +85°C.

Clock Buffers, Drivers Feature Summary

• Two low skew, low additive jitter LVDS output pairs
• One differential clock input pair accepting LVDS and CML levels
• Maximum input clock frequency: 1.5 GHz
• Output skew: 3 ps (typical); Propagation delay: 400 ps (maximum)
• Low additive phase jitter, RMS: 34 fs (typical) at fREF = 156.25MHz, 12kHz–20MHz
• Device current consumption: 40 mA typical at 1.8V; 50 mA typical at 2.5V

Clock Buffers, Drivers Applications

• Clock distribution for PCI Express Gen 1-5
• Distribution of 1PPS (one pulse per second) signals
• High-speed clock and data signal fanout

Clock Buffers, Drivers Procurement Notes

Verify the ordering suffix 'NLGI' corresponds to the tube packaging configuration as specified in the Renesas datasheet. Confirm that the component meets RoHS 6 compliance requirements. Ensure the application environment stays within the specified ambient temperature range of -40°C to +85°C and case temperature limit of +105°C during operation.

Clock Buffers, Drivers Selection Notes

Select this component when a single differential input must be distributed to two LVDS outputs with minimal skew. Verify compatibility with input signal standards such as LVDS or CML. Ensure the power supply voltage matches either the 1.8V or 2.5V specification. Consider the thermal resistance characteristics of the 16-VFQFPN package for heat dissipation in the target design.

Clock Buffers, Drivers Part Context

The 8P34S1102NLGI belongs to the 8P34S1102 series of differential LVDS fanout buffers manufactured by Renesas Electronics Corporation. This series is characterized by its ability to handle high-frequency signals with very low additive phase noise, making it suitable for precision timing applications requiring well-defined performance and repeatability across multiple channels.

Clock Buffers, Drivers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.

Clock Buffers, Drivers FAQ

What input signal levels does the 8P34S1102 support?

The differential CLK and nCLK inputs accept LVDS and CML differential input levels.

How is fail-safe operation defined for this device?

Fail-safe operation allows the clock inputs to be held at a DC voltage of up to 4.6V without damaging the device or the input pins when the device is powered down.

What is the typical RMS additive phase jitter specification?

The typical RMS additive phase jitter is 34 fs when measured at fREF = 156.25 MHz with a square wave input, VDD = 1.8V ± 5% or 2.1V - 2.7V, VPP = 1V, and an integration range of 12 kHz – 20 MHz.