8535AG-31LF

Overview

The Renesas Electronics 8535AG-31LF is a low skew, high performance 1-to-4 fanout buffer designed for clock distribution. It translates single-ended LVCMOS or LVTTL inputs to four differential 3.3V LVPECL outputs. The device supports selectable crystal or clock inputs and operates within a supply voltage range of 3.135 V to 3.465 V. Key electrical parameters include a maximum propagation delay of 1.65 ns and a maximum output frequency of 266 MHz. It is housed in a 20-pin TSSOP package with an operating temperature range of 0°C to +70°C.

Feature Summary

• Converts single-ended LVCMOS/LVTTL or crystal inputs to four differential 3.3V LVPECL outputs
• Maximum output frequency of 266 MHz with typical output skew of 30 ps
• Internally synchronized output enable to eliminate runt pulses during asynchronous assertion/deassertion
• Operates on a full 3.3V supply with a maximum propagation delay of 1.65 ns

Applications

• High-performance clock distribution networks requiring low skew
• Systems utilizing HiPerClockS technology for precise timing
• Digital signal processing equipment requiring LVCMOS to LVPECL translation
• Telecommunications infrastructure demanding stable clock signals

Procurement Notes

Verify the specific suffix '31' against the datasheet to confirm the exact input/output configuration and temperature grade. Ensure the RoHS compliance status matches project requirements, as lead-free variants exist within the family. Confirm the 20-TSSOP package dimensions align with PCB layout constraints before finalizing procurement.

Selection Notes

Select this component when a 1-to-4 fanout ratio from single-ended CMOS/TTL to differential LVPECL is required. Compare the 1.65 ns propagation delay and 266 MHz limit against system timing budgets. Consider the 0°C to +70°C commercial temperature range; if industrial temperatures are needed, verify alternative part numbers within the 8535 series.

Part Context

This component belongs to the Renesas (formerly ICS) 8535 series of HiPerClockS fanout buffers. It serves as a bridge between standard logic levels and high-speed differential signaling. The 'AG' designation typically indicates lead-free packaging, while 'LF' confirms RoHS compliance. It replaces older generations like the ICS8535I-31 in modern designs.

Replacement Considerations

The 8535AGI-31LF is a verified equivalent offering an extended -40°C to +85°C operating temperature range compared to the 0°C to +70°C range of the 8535AG-31LF. Both share identical pinouts and electrical characteristics but differ in environmental rating.