IDT74FCT257TQ

Overview

The IDT74FCT257TQ is a FAST CMOS quad 2-input multiplexer manufactured by Integrated Device Technology. It features four independent 2-to-1 multiplexing circuits housed in a 48-pin Plastic Dual In-Line Package (PDIP). The device operates on a single voltage supply source and utilizes through-hole mounting technology. As part of the 74FCT logic series, it provides high-speed data selection capabilities for digital systems requiring multiple input channels.

Feature Summary

• Contains four independent 2:1 multiplexer circuits
• Utilizes FAST CMOS technology for high-speed operation
• Designed for single voltage supply applications

Applications

• Digital signal routing
• Data selection in logic circuits
• Input channel switching

Procurement Notes

Verify the manufacturer origin, as IDT was acquired by Renesas Electronics. Confirm the package type is PDIP-48 with a 0.600-inch width. Ensure the datasheet matches the specific revision for electrical characteristics. Check for obsolescence status given the acquisition history. Validate that the component meets required logic family specifications.

Selection Notes

Select this component when a quad 2-input multiplexer is required in a DIP package. Ensure the design supports single-supply operation compatible with FCT logic levels. Verify pin compatibility if replacing older 74FCT variants. Consider the 48-pin footprint availability during PCB layout. Confirm thermal requirements align with standard DIP packaging constraints.

Part Context

This component belongs to the 74FCT logic family, which bridges TTL and CMOS performance. The IDT74FCT257 series is widely used in legacy and industrial systems. Integration into modern designs requires attention to supply voltage compatibility. The PDIP-48 package offers robust mechanical stability for through-hole assembly processes.

Replacement Considerations

Check for direct equivalents from Renesas Electronics following the IDT acquisition. Verify pinout compatibility with other 74FCT257 variants. Ensure logical function remains identical for seamless substitution.