8535AG-31LFT

Overview

The 8535AG-31LFT is a low skew, high-performance clock buffer manufactured by Renesas Electronics Corporation. It functions as a 1-to-4 fanout buffer that translates single-ended LVCMOS or LVTTL clock inputs into four differential 3.3V LVPECL outputs. The device supports maximum output frequencies up to 266 MHz and operates within a supply voltage range of 3.135 V to 3.465 V. It features selectable crystal or clock inputs and includes an internally synchronized output enable to prevent runt pulses. The component is housed in a 20-TSSOP package with dimensions of 6.50 mm x 4.40 mm.

Feature Summary

• Translates LVCMOS/LVTTL inputs to four differential 3.3V LVPECL outputs
• Maximum operating frequency of 266 MHz
• Typical output skew of 30 ps and maximum part-to-part skew of 200 ps
• Internally synchronized output enable to eliminate runt pulses

Applications

• High-speed data acquisition systems requiring precise clock distribution
• Telecommunications infrastructure utilizing LVPECL logic families
• Test and measurement equipment demanding low jitter clock signals

Procurement Notes

Verify the specific suffix 'T' indicates tape and reel packaging versus tube packaging for other variants. Confirm RoHS compliance status through official manufacturer documentation, as lead-free designations may vary by production batch. Ensure the input signal levels match the specified LVCMOS or LVTTL requirements for proper translation to LVPECL outputs.

Selection Notes

Select this component when a single-ended CMOS/TTL source must drive multiple LVPECL loads with minimal skew. Compare propagation delay specifications against system timing budgets. Verify that the 20-TSSOP package footprint aligns with the PCB layout constraints and thermal management requirements of the target application.

Part Context

This part belongs to the HiPerClockS family of high-performance clock solutions from Integrated Device Technology (IDT), now part of Renesas Electronics. It serves as a direct replacement for legacy parts such as the ICS8535I-11. The device is designed to provide well-defined performance and repeatability for applications requiring strict clock synchronization.

Replacement Considerations

The datasheet explicitly states that this component replaces the ICS8535I-11. Users migrating from previous generations should consult migration guides for functional differences.