74AC257PC

Signal Switches, Multiplexers, Decoders Overview

The Fairchild Semiconductor 74AC257PC is a quad 2-input multiplexer with 3-state outputs. It operates on a single supply voltage ranging from 4.5V to 5.5V. The device features non-inverting true outputs and can source or sink up to 24mA of current. It is housed in a 16-pin DIP package and functions within an operating temperature range of -40°C to +85°C.

Signal Switches, Multiplexers, Decoders Feature Summary

• Quad 2-input multiplexing capability with common data select inputs
• Non-inverting 3-state outputs for direct bus interfacing
• High output drive capability sourcing and sinking 24mA

Signal Switches, Multiplexers, Decoders Applications

• Bus-oriented system data routing
• Multiplexer expansion by tying outputs together
• Data selector applications requiring high impedance states

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific manufacturer origin, as Fairchild Semiconductor's logic division was acquired by onsemi. Confirm that the part number corresponds to the legacy Fairchild designation rather than the current onsemi equivalent. Check for RoHS compliance status and ensure the package type matches the required 16-DIP form factor for your design constraints.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when a quad 2-to-1 multiplexer with tri-state outputs is required for 5V logic systems. Ensure the application benefits from the 24mA drive strength and the ability to interface directly with bus structures. Verify that the 16-pin DIP package fits the available board space and mounting requirements.

Signal Switches, Multiplexers, Decoders Part Context

This component belongs to the 74AC series of advanced CMOS logic devices. It serves as a data selector within digital circuits, allowing multiple data sources to be routed to a single output line based on control signals. The 3-state feature enables connection to shared data buses without electrical interference.