74ACT139PC

Signal Switches, Multiplexers, Decoders Overview

The Fairchild Semiconductor 74ACT139PC is a dual 2-line-to-4-line decoder/demultiplexer from the 74ACT series. It operates within a supply voltage range of 4.5V to 5.5V and features TTL-compatible inputs. The device is housed in a 16-pin Plastic Dual-In-Line Package (PDIP) with a standard 0.300-inch width. It supports an operating temperature range from -40°C to +85°C.

Signal Switches, Multiplexers, Decoders Feature Summary

• Dual independent decoding sections
• TTL-compatible input levels
• Inverted output polarity

Signal Switches, Multiplexers, Decoders Applications

• Address decoding for memory systems
• Demultiplexing data streams
• Control signal distribution

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific suffix 'PC' corresponds to the PDIP package variant. Confirm RoHS compliance status as indicated by manufacturer documentation. Ensure the source document explicitly identifies Fairchild Semiconductor as the original manufacturer rather than a distributor alias.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when dual 2-to-4 decoding is required with TTL interface compatibility. The ACT series offers higher speed compared to LS variants while maintaining similar power consumption profiles suitable for general logic applications.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the 74AC/74ACT family of high-speed CMOS logic devices. The 74ACT139 specifically provides two independent decoders, distinguishing it from single-decoder counterparts like the 74HC139 or 74LS139.

Signal Switches, Multiplexers, Decoders Replacement Considerations

Cross-reference with 74ACT139N or 74ACT139SC for alternative packaging options such as SOIC.