CY74FCT646TQCT

Overview

The CY74FCT646TQCT is an octal bus transceiver manufactured by Texas Instruments, belonging to the 74FCT logic series. It features non-inverting data transmission with three-state outputs and operates within a supply voltage range of 4.75V to 5.25V. The device provides high drive capability with output currents of 32mA for high states and 64mA for low states. It is housed in a 24-SSOP package suitable for surface mount applications and functions across an industrial temperature range of -40°C to 85°C.

Feature Summary

• Octal bus transceiver architecture supporting eight-bit data transfer
• Three-state outputs enabling direct connection to system buses
• Non-inverting signal polarity for straightforward data routing

Applications

• Memory mapping systems
• Clock drivers
• Bus-oriented transmissions

Procurement Notes

Verify component authenticity through authorized distributors as this part is obsolete. Confirm RoHS3 compliance and moisture sensitivity level 2 status during intake inspection. Check for lead integrity on the 24-SSOP package before soldering. Ensure storage conditions prevent humidity absorption prior to reflow processes.

Selection Notes

Select this component for designs requiring high-speed octal data transfer with strong drive capabilities. Consider the 24-SSOP footprint constraints and thermal requirements for the operating environment. Evaluate power consumption characteristics against system budget limits when integrating into dense circuit layouts.

Part Context

This integrated circuit belongs to the Texas Instruments 74FCT family, designed for fast CMOS technology applications. It serves as a critical interface element in digital systems, facilitating efficient data movement between microprocessors and peripheral devices while maintaining signal integrity over standard bus architectures.

Replacement Considerations

The CY7446ATQCT is documented as a similar substitute part number available from Texas Instruments.