74ACTQ153PC

Signal Switches, Multiplexers, Decoders Overview

The MC74ACTQ153PC is a high-speed dual 4-input multiplexer from the FACT Quiet Series, manufactured by onsemi (formerly Fairchild Semiconductor). It features common select inputs and individual active-LOW enable inputs for each section. The device operates within a supply voltage range of 4.5V to 5.5V and supports an operating temperature range of -40°C to +85°C. Key electrical parameters include a propagation delay of up to 13.5 ns at 5.0V, TTL-compatible inputs, and outputs capable of sourcing or sinking 24 mA. It is housed in a 16-Lead Plastic Dual-In-Line Package (PDIP).

Signal Switches, Multiplexers, Decoders Feature Summary

• Guaranteed simultaneous switching noise level and dynamic threshold performance for reduced EMI.
• Improved latch-up immunity compared to standard ACT series devices.
• TTL-compatible inputs allowing direct interfacing with TTL logic systems.
• Outputs source and sink 24 mA, providing robust drive capability.

Signal Switches, Multiplexers, Decoders Applications

• Data routing and selection in digital communication systems.
• Function generation for creating specific logic functions of three variables.
• Implementation of 2-pole, 4-position switch equivalents in control circuits.

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the package type matches the required footprint; the 'PC' suffix denotes a 16-Lead PDIP. Confirm that the design accounts for the specified 4.5V to 5.5V VCC range. Ensure thermal management meets the -40°C to +85°C operating limits. Check for any recent Product Change Notifications (PCN) regarding manufacturing site or material changes. Validate that the 24 mA output current rating aligns with downstream load requirements.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when low electromagnetic interference is critical due to its quiet series characteristics. Choose it over standard AC/ACT variants if improved latch-up protection is required. Verify compatibility with TTL input voltage levels if interfacing with legacy logic families. Consider the PDIP package constraints for PCB layout and assembly methods compared to surface-mount alternatives.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the 74ACT family of high-speed CMOS logic devices. It is functionally similar to the 74AC153 but offers faster speeds and TTL-compatible inputs. The 'Q' designation indicates the Quiet Series, optimized for noise reduction. It serves as a dual multiplexer alternative to single-function logic gates in complex data path applications.

Signal Switches, Multiplexers, Decoders Replacement Considerations

The 74ACT153SC is a pin-compatible SOIC variant. The 74ACTQ153MTCX is a TSSOP alternative. Standard 74ACT153 devices lack the guaranteed noise specifications. Verify package dimensions and lead pitch when substituting with non-Q series parts.

Signal Switches, Multiplexers, Decoders FAQ

What is the logic function of the Enable inputs?

The Enable inputs (Ea, Eb) are active-LOW. When HIGH, the corresponding outputs are forced LOW. When LOW, the multiplexer selects data based on the Select inputs.

How does the ACTQ153 handle simultaneous switching?

It guarantees simultaneous switching noise levels and dynamic threshold performance, minimizing crosstalk and ground bounce during multiple output transitions.

Can this device be used as a function generator?

Yes, in addition to multiplexing, it can generate any two functions of three variables using the data inputs and select lines.