74AC251SCX

Signal Switches, Multiplexers, Decoders Overview

The onsemi 74AC251SCX is an 8-input digital multiplexer housed in a 16-lead Small Outline Integrated Circuit (SOIC) package. It operates within a supply voltage range of 2.0V to 6.0V and supports an operating temperature from -40°C to +85°C. The device provides both true and complementary 3-STATE outputs capable of sourcing or sinking 24 mA. Propagation delays are specified at 8.5 ns at 3.3V and 6 ns at 5V, with a maximum quiescent supply current of 40 µA.

Signal Switches, Multiplexers, Decoders Feature Summary

• Provides multifunctional capability as a universal function generator for logic functions of four variables
• Features on-chip select logic decoding for efficient data selection
• Includes both true and complementary 3-STATE outputs for flexible bus expansion

Signal Switches, Multiplexers, Decoders Applications

• Data routing between multiple sources
• Universal function generation
• Bus expansion systems

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific ordering code suffix against manufacturer documentation to confirm package type and tape/reel availability. Ensure the component meets required environmental standards and that the SOIC-16 physical dimensions align with the target PCB footprint constraints.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when an 8-channel multiplexing solution with high-speed CMOS performance is required. Consider the 74ACT251 variant if TTL-compatible input thresholds are necessary for interfacing with legacy logic families.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the 74AC series of high-speed CMOS logic devices. It serves as a core building block for digital signal routing and data selection applications, offering reduced power consumption compared to earlier generations while maintaining robust output drive capabilities.

Signal Switches, Multiplexers, Decoders Replacement Considerations

The 74ACT251SCX is a documented alternative within the same family, providing compatible functionality with TTL-compatible inputs.