IDT74FCT257TP

Signal Switches, Multiplexers, Decoders Overview

The IDT74FCT257TP is a quad 2-input multiplexer belonging to the 74FCT logic series. It features TTL-compatible input and output levels, supporting non-inverting signal selection. The device operates within a supply voltage range of 2.7V to 3.6V or 4.5V to 5.5V. It is housed in a 48-pin DIP package with through-hole mounting. Key electrical parameters include a maximum propagation delay of 5ns at 50pF load, high drive capabilities with -32mA high-level and 64mA low-level output currents, and an operating temperature range from -40°C to +85°C.

Signal Switches, Multiplexers, Decoders Feature Summary

• Quad configuration providing four independent 2-to-1 data selectors
• TTL-compatible interface for direct integration with standard logic families
• High-current output drivers capable of driving heavy capacitive loads

Signal Switches, Multiplexers, Decoders Applications

• Data routing in digital communication systems
• Signal selection in microprocessor-based control circuits
• Address/data bus switching in embedded systems

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific suffix 'TP' confirms the 48-pin PDIP package and through-hole construction. Confirm the manufacturer source, as IDT assets are managed by Renesas Electronics. Ensure the component status is active if new production is required. Cross-reference pinout diagrams with the official datasheet to ensure compatibility with existing PCB footprints.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when a quad multiplexer with TTL compatibility is required. The 48-pin DIP package suits prototyping and through-hole manufacturing processes. Consider the 5ns propagation delay and current drive specifications against system timing requirements. Verify that the dual voltage ranges (2.7-3.6V and 4.5-5.5V) align with the target power supply architecture.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the 74FCT family, which combines Fast CMOS speed with TTL compatibility. The 74FCT257 specifically implements quad 2-input multiplexing functionality. Integrated Device Technology was acquired by Renesas Electronics, which now manages the product line. The device is designed for high-speed digital applications requiring reliable signal routing.

Signal Switches, Multiplexers, Decoders Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.