49FCT805APYGI8

Overview

The 49FCT805APYGI8 is a dual clock driver and distribution IC manufactured by Renesas Electronics Corporation. It features two independent banks of drivers, each providing a 1:5 fanout ratio with CMOS or LVTTL outputs. The device operates within a supply voltage range of 3V to 3.6V and supports an industrial operating temperature range of -40°C to 85°C. Packaged in a 20-SSOP (0.209 inch / 5.30mm wide) surface-mount housing, it is designed for high-speed clock distribution applications requiring low skew and high signal quality.

Feature Summary

• Dual independent driver banks with 1:5 fanout per bank
• CMOS/LVTTL input and output compatibility
• Low capacitance inputs for high-speed performance
• RoHS3 compliant and lead-free construction

Applications

• High-speed clock distribution networks
• Address bus distribution systems
• Point-to-point transmission line driving
• Diagnostics and PLL driving via heartbeat monitor

Procurement Notes

Verify the current lifecycle status before procurement, as the 49FCT805APYG8 variant is listed as End-of-Life (EOL) in public distributor records. Confirm that the specific suffix 'I8' corresponds to the active inventory version rather than the discontinued standard package. Cross-reference the manufacturer's official discontinuance notifications to ensure long-term availability for new designs.

Selection Notes

Select this component when a dual-bank 1:5 fanout buffer is required for 3.3V logic systems. Ensure the application demands CMOS or LVTTL interface standards. Verify that the 20-SSOP package dimensions fit the PCB layout constraints. Consider the 49FCT3805 series if integrated diagnostics or heartbeat monitoring features are necessary for system reliability.

Part Context

This part belongs to the 49FCT family of fast CMOS clock drivers. It shares architectural similarities with the 49FCT3805 but lacks the dedicated diagnostic heartbeat monitor found in the 3805 variant. The device is part of Renesas's broader portfolio of timing solutions, which includes programmable generators and jitter attenuators.

Replacement Considerations

Public data lists PI49FCT32805QE from Diodes Incorporated as a similar alternative. Verify pinout compatibility and electrical specifications against the original datasheet before substitution.