49FCT805SOG

Overview

The 49FCT805SOG is a dual clock driver and distribution buffer manufactured by Renesas Electronics. It operates with a 1:5 multiplication factor, providing two independent banks of drivers. The device accepts LVCMOS inputs and generates CMOS, LVCMOS, or TTL outputs. It supports maximum output frequencies up to 166 MHz and functions within a supply voltage range of 4.75V to 5.25V. Packaged in a 20-SOIC (0.295", 7.50mm wide) surface-mount format, it is designed for high-speed clock distribution applications requiring low skew and signal integrity.

Feature Summary

• Dual 1:5 fanout clock buffer architecture
• Supports CMOS, LVCMOS, and TTL output types
• Maximum operating frequency of 166 MHz
• Operates on a single 5V supply (4.75V–5.25V)

Applications

• High-speed clock distribution networks
• Address bus distribution systems
• Point-to-point transmission line driving

Procurement Notes

The 49FCT805SOG is officially listed as obsolete and no longer manufactured by Renesas Electronics. Procurement is restricted to remaining stock from authorized distributors or secondary market suppliers. Verification of component authenticity and lot traceability is critical due to the end-of-life status. Designers should evaluate alternative components for new production runs.

Selection Notes

Select this component only if legacy compatibility with existing 49FCT805T series designs is required. Ensure the application utilizes a 5V logic environment compatible with CMOS/TTL outputs. Verify that the 20-SOIC package dimensions fit the PCB footprint constraints. For new designs, consider modern replacements such as the 8L30210NLGI8 which offers similar functionality in an active lifecycle.

Part Context

This part belongs to the 49FCT805T family of Fast Clock Drivers. The 'SOG' suffix denotes the specific 20-SOIC package variant. The product line was originally developed by Integrated Device Technology (IDT) before being acquired by Renesas Electronics. Documentation may still reference IDT part numbers alongside the current Renesas designations.

Replacement Considerations

The 8L30210NLGI8 is identified as a similar replacement option available from Renesas Electronics. This substitute maintains comparable clock buffering capabilities but requires verification of pinout compatibility and electrical parameter alignment with the original 49FCT805SOG specifications.