IDT74FCT257ATSOG

Overview

The IDT74FCT257ATSOG is a quad multiplexer from the FCT logic family, manufactured by Renesas Electronics. It features four independent 2-input selectors housed in a 16-pin Small Outline Package (SOP). The device operates on a single 5V supply and supports an operating temperature range of -40°C to +85°C. Outputs are three-state capable, allowing for bus-oriented applications. Propagation delay is typically 5 ns at nominal supply voltage with a 50 pF load.

Feature Summary

• Provides four independent 2-to-1 multiplexing channels within a single integrated circuit
• Features three-state outputs to facilitate direct connection to system buses without external drivers
• Utilizes Fast CMOS technology to deliver high-speed switching performance with low power consumption

Applications

• Bus-oriented memory address decoding
• Data routing in communication systems
• Signal selection in test and measurement equipment

Procurement Notes

Verify component authenticity through authorized distributors or official manufacturer channels. Confirm package integrity and pin alignment against the SOP-16 specification. Ensure storage conditions comply with moisture sensitivity level requirements to prevent soldering defects during surface mount assembly processes.

Selection Notes

Select this component when designing circuits requiring multiple independent signal paths controlled by common select lines. The FCT series offers compatibility with standard TTL logic levels while maintaining CMOS noise immunity. Consider the 16-pin footprint constraints and thermal dissipation capabilities relative to the specific PCB layout environment.

Part Context

This part belongs to the broader 74FCT logic family, which bridges the performance gap between standard TTL and CMOS technologies. The IDT branding indicates its origin from Integrated Device Technology prior to corporate acquisitions. It serves as a functional equivalent to other industry-standard quad multiplexer configurations within the same voltage and speed class.

Replacement Considerations

Cross-reference with CD74FCT257 or similar quad 2-input multiplexers in SOP-16 packages. Verify pinout compatibility and electrical characteristics such as propagation delay and output drive strength before substitution.