74ACT251PC

Signal Switches, Multiplexers, Decoders Overview

The Fairchild Semiconductor 74ACT251PC is a high-speed CMOS octal multiplexer belonging to the 74ACT logic series. It features eight data inputs, three address select lines, and an active-low output enable input. The device provides complementary outputs in both true and complemented forms. It operates within a supply voltage range of 4.5V to 5.5V and supports through-hole mounting in a standard 16-pin plastic dual-in-line package (PDIP).

Signal Switches, Multiplexers, Decoders Feature Summary

• Provides complementary true and inverted outputs for flexible signal routing.
• Features active-low output enable control for bus-oriented system interfacing.
• Utilizes high-speed CMOS technology compatible with TTL logic levels.

Signal Switches, Multiplexers, Decoders Applications

• Data acquisition systems requiring multi-channel signal selection.
• Bus-oriented architectures needing controlled data path switching.
• Digital communication equipment utilizing parallel-to-serial conversion.

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify component authenticity by checking manufacturer markings against official datasheet specifications. Confirm the package type matches the required 16-pin DIP form factor. Ensure the operating temperature range aligns with your specific application environment requirements before finalizing procurement decisions.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when complementary outputs are necessary for differential signaling or logic inversion without additional gates. Consider the 74ACT series for superior speed compared to standard 74LS devices while maintaining TTL compatibility. Evaluate power consumption constraints as ACT series performance differs from AC series variants.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the widely adopted 74ACT family of digital logic integrated circuits. The 74ACT series bridges the performance gap between older TTL technologies and modern CMOS standards. It offers faster propagation delays than LS equivalents while retaining familiar pinouts and interface characteristics for legacy system upgrades.

Signal Switches, Multiplexers, Decoders Replacement Considerations

The 74AC251PC serves as a direct functional substitute, offering identical pinout and logic functions with potentially different electrical characteristics. Verify that the alternative variant meets the specific voltage and current requirements of the target circuit design.