74AC139PC

Signal Switches, Multiplexers, Decoders Overview

The onsemi 74AC139PC is a dual 2-line to 4-line decoder/demultiplexer from the 74AC logic family. It features two independent decoders with active-low mutually exclusive outputs, each accepting two address inputs and providing four decoded outputs. The device operates within a supply voltage range of 2 V to 6 V and supports a maximum clock frequency of 133 MHz. Packaged in a 16-lead Plastic Dual-In-Line (PDIP) format, it functions across an industrial temperature range of -40°C to +85°C.

Signal Switches, Multiplexers, Decoders Feature Summary

• Dual independent 1-of-4 decoding capability
• Active-low mutually exclusive outputs
• TTL-compatible input levels

Signal Switches, Multiplexers, Decoders Applications

• Memory address decoding
• Data routing systems
• Industrial control logic

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific manufacturer source for the 74AC139PC designation, as historical records indicate Fairchild Semiconductor as the original producer before acquisition by onsemi. Confirm RoHS compliance status and package tolerance specifications against current datasheets prior to integration into production designs.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when dual independent decoding is required within a single package. The AC series offers higher speed performance compared to standard HC variants. Ensure the application environment remains within the specified -40°C to +85°C operating temperature range and that the power supply voltage stays between 2 V and 6 V.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the 74AC logic family, known for high-speed CMOS performance. It serves as a functional equivalent to other industry-standard dual decoder ICs. The PDIP-16 package provides through-hole mounting options suitable for prototyping and legacy board designs requiring robust mechanical stability.

Signal Switches, Multiplexers, Decoders Replacement Considerations

Cross-reference with MC74AC139MG or SN74AC139 for pin-compatible alternatives. Verify electrical characteristics match requirements when substituting with devices from different manufacturers.