49FCT3805BQG8

Overview

The 49FCT3805BQG8 is a dual 1-to-5 non-inverting clock driver manufactured by Renesas Electronics. Built using advanced dual metal CMOS technology, it operates at 3.3V and features two independent driver banks with individual output enable controls. The device includes a 'heartbeat' monitor output for diagnostics and PLL driving, which mirrors the input signal. It is designed for high-speed clock distribution requiring low skew and high signal quality, supporting single point-to-point transmission line driving.

Feature Summary

• Dual 1:5 fanout configuration with independent output enable control per bank
• Integrated heartbeat monitor output identical to standard outputs for diagnostics
• Low capacitance inputs with hysteresis for improved signal integrity
• Advanced dual metal CMOS technology optimized for 3.3V operation

Applications

• High-speed clock distribution systems
• Address distribution networks requiring low skew
• PLL driving applications
• Single point-to-point transmission line driving

Part Context

This component belongs to the 49FCT series of clock drivers. It serves as an evolution of earlier FCT3805 variants, specifically engineered for 3.3V logic families. The device replaces older 5V counterparts like the 49FCT805, offering lower power consumption while maintaining high-speed performance characteristics suitable for modern digital systems.

Replacement Considerations

Direct pin-compatible replacements within the same family include the 49FCT3805BQGI8 (tape and reel) or the 49FCT3805BQG (tube). When substituting, verify that the replacement package matches the QSOP-20 form factor and confirm voltage compatibility, as 5V variants such as the 49FCT805 are not electrically compatible.