74ACT257SCX

Signal Switches, Multiplexers, Decoders Overview

The onsemi 74ACT257SCX is a quad 2-input multiplexer with 3-state outputs, housed in a 16-lead SOIC package. It selects four bits of data from two sources using a common data select input, presenting the selected data in true form. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports an operating temperature range of -40°C to +85°C. Propagation delays are specified at 7.5 ns maximum for inputs to outputs and 10.5 ns maximum for the select input to output at 5.0 V.

Signal Switches, Multiplexers, Decoders Feature Summary

• Features noninverting 3-state outputs that can be switched to a high impedance state via a common Output Enable input.
• Includes TTL-compatible inputs for direct interfacing with standard logic systems.
• Supports multiplexer expansion by allowing outputs to be tied together.
• Provides high drive capability with outputs capable of sourcing or sinking 24 mA.

Signal Switches, Multiplexers, Decoders Applications

• Bus-oriented system interfaces requiring tri-state control
• Data routing between multiple sources in digital circuits
• Multiplexer expansion configurations

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific ordering code suffix against manufacturer documentation to confirm package type and tape/reel availability. Confirm RoHS compliance status and material composition details through official datasheets or compliance reports before finalizing procurement specifications.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when a quad 2-input multiplexer with 3-state outputs is required for bus applications. Ensure the design accommodates the 4.5 V to 5.5 V supply voltage range and utilizes the common data select input for synchronized switching across all four channels.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the 74AC/74ACT logic family, specifically designed as a quad 2-input multiplexer. It is manufactured by onsemi (formerly Fairchild Semiconductor) and is available in various packages including SOIC, SOP, TSSOP, and PDIP. The 'SC' designation indicates the 16-lead Small Outline Integrated Circuit package.

Signal Switches, Multiplexers, Decoders Replacement Considerations

Compatible substitutes include the 74AC257SCX and other variants within the 74AC257/74ACT257 series. Verify pinout compatibility and electrical characteristics such as propagation delay and supply voltage ranges when substituting.