74ACT257PC

Signal Switches, Multiplexers, Decoders Overview

The Fairchild Semiconductor 74ACT257PC is a quad 2-input multiplexer featuring non-inverting 3-state outputs. It operates on a single supply voltage ranging from 4.5V to 5.5V. The device provides high output drive capability with current ratings of 24mA for both high and low states. It is housed in a 14-pin DIP package and supports an operating temperature range from -40°C to +85°C.

Signal Switches, Multiplexers, Decoders Feature Summary

• Quad 2-input multiplexing architecture with common data select inputs
• Non-inverting 3-state outputs allowing direct bus interfacing
• TTL-compatible input logic levels for system integration

Signal Switches, Multiplexers, Decoders Applications

• Bus-oriented data routing systems
• Multiplexer expansion by tying outputs together
• Data selector circuits in industrial control

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific manufacturer origin, as Fairchild Semiconductor assets were acquired by onsemi. Confirm RoHS compliance status and check for official Product Change Notices regarding obsolescence or lifecycle changes before finalizing procurement plans.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component for applications requiring quad multiplexing with 3-state output control. Ensure the design accommodates the 14-pin DIP footprint and that the 4.5V to 5.5V supply range aligns with the target system power rails.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the 74ACT logic family, designed for high-speed CMOS operation with TTL-compatible inputs. It serves as a standard data selector within digital logic circuits, offering balanced propagation delays and robust noise immunity for reliable signal switching.

Signal Switches, Multiplexers, Decoders Replacement Considerations

Public confirmed substitute part numbers include MC74ACT257DG and 74ACT257MTC_Q.