74AC251PC

Signal Switches, Multiplexers, Decoders Overview

The Fairchild Semiconductor 74AC251PC is an octal multiplexer belonging to the 74AC logic series. It features a single circuit configuration that selects one of eight data inputs for transmission to a single output. The device operates on a single power supply ranging from 2V to 6V and supports through-hole mounting in a 16-PDIP package with a 0.300-inch width. It provides high drive capability with output source and sink currents of 24mA each. The component is rated for operation within a temperature range of -40°C to 85°C.

Signal Switches, Multiplexers, Decoders Feature Summary

• Provides 8-to-1 data selection functionality using common select lines
• Features high-current outputs capable of sourcing and sinking 24mA
• Supports wide voltage operation across a 2V to 6V single supply range

Signal Switches, Multiplexers, Decoders Applications

• Data routing in digital communication systems
• Address decoding for memory access
• Signal switching in bus-oriented architectures

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific manufacturer origin, as this part number has been produced by multiple entities including Fairchild Semiconductor and onsemi. Confirm the package dimensions match the required 16-DIP footprint. Check for RoHS compliance status if environmental regulations apply to the assembly process. Ensure the operating temperature range meets the system requirements.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when a single-channel 8-input multiplexer is required with robust drive strength. The AC series offers higher speed than standard TTL equivalents while maintaining compatible logic levels. Consider the 16-pin DIP package for prototyping or applications requiring through-hole assembly. Verify that the 2V to 6V supply range aligns with the system power rails.

Signal Switches, Multiplexers, Decoders Part Context

This device is part of the 74AC family of high-speed CMOS logic devices. It serves as a functional equivalent to other 8-to-1 multiplexers in the industry but is distinguished by its specific pinout and drive characteristics. The 74AC251 is often used in conjunction with decoders or other logic gates to manage complex data paths in embedded systems.

Signal Switches, Multiplexers, Decoders Replacement Considerations

The 74F251ASPC is a documented alternative offering similar multiplexing functions. Verify compatibility regarding input thresholds and output drive capabilities before substitution.