49FCT805SOG8

Overview

The 49FCT805SOG8 is a dual clock driver and distribution integrated circuit manufactured by Renesas Electronics. It operates within a supply voltage range of 4.75V to 5.25V and supports input/output types including CMOS and LVTTL. The device features a 1:5 multiplication factor for each of its two independent circuits, packaged in a 20-SOIC (0.295", 7.50mm wide) surface-mount package. It is rated for an operating temperature range of -40°C to +85°C. This component is classified as a fan-out buffer/driver within the 49FCT series.

Feature Summary

• Dual independent 1:5 clock buffering circuits
• Supports CMOS and LVTTL input/output logic levels
• Operates on a single 5V supply (4.75V–5.25V)
• Industrial temperature rating (-40°C to +85°C)

Applications

• Clock signal distribution in high-speed digital systems
• Fan-out buffering for TTL/CMOS compatible loads
• System timing architecture in industrial equipment

Procurement Notes

This component is officially discontinued and no longer manufactured. Verification of availability should focus on surplus or secondary market sources rather than direct manufacturer channels. Buyers must confirm the authenticity of stock from third-party distributors due to the end-of-life status. Compliance with RoHS3 standards is documented in official product change notifications.

Selection Notes

Designers requiring this specific 1:5 dual buffer configuration should evaluate the 8L30210NLGI8 as a verified alternative recommended by Renesas. Selection criteria must account for the transition from the legacy 49FCT series to newer platform architectures. Pin compatibility and electrical specifications should be cross-referenced against the target application's voltage and load requirements before substitution.

Part Context

The 49FCT805SOG8 belongs to the IDT/Renesas 49FCT family of fast CMOS clock drivers. It was previously marketed under the IDT brand name prior to Renesas' acquisition. The 'SOG8' suffix denotes the SOIC-20 package type and tape-and-reel packaging format. This part represents a standard solution for distributing clock signals in legacy 5V logic designs.

Replacement Considerations

Renesas recommends the 8L30210NLGI8 as a functional replacement for the 49FCT805SOG8. Designers should verify pinout compatibility and electrical parameter alignment between the legacy 49FCT device and the suggested 8L30210NLGI8 substitute.