74ACT257PC

Signal Switches, Multiplexers, Decoders Overview

The MC74ACT257PC is a quad 2-input multiplexer with 3-state outputs manufactured by onsemi. It selects four bits of data from two sources using a common data select input, presenting the selected data in true form at the outputs. The device features noninverting 3-state outputs that can be switched to a high impedance state via a common Output Enable (OE) input, facilitating direct interfacing with bus-oriented systems. It operates within a supply voltage range of 4.5V to 5.5V and supports an operating temperature range of -40°C to +85°C.

Signal Switches, Multiplexers, Decoders Feature Summary

• Quad 2-input multiplexer architecture with 3-state outputs
• Noninverting output logic for true data presentation
• Common Output Enable (OE) input for high-impedance switching
• TTL-compatible inputs for ACT series devices

Signal Switches, Multiplexers, Decoders Applications

• Bus-oriented system interfacing
• Data selection between two sources
• Multiplexer expansion by tying outputs together

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify component authenticity through official manufacturer channels or authorized distributors. Confirm package type matches the 16-Lead Plastic Dual-In-Line (PDIP) specification. Check RoHS compliance status as required by project specifications. Ensure the part number suffix corresponds to the correct packaging variant. Validate lead times and availability directly with suppliers due to potential obsolescence status.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when a quad 2-input multiplexer with 3-state outputs is required for bus-oriented applications. Consider the TTL-compatible inputs if interfacing with legacy logic families. Verify that the PDIP package fits the board layout constraints. Ensure the operating voltage range aligns with the system's 5V power supply. Evaluate propagation delay requirements against the datasheet specifications.

Signal Switches, Multiplexers, Decoders Part Context

This component belongs to the 74ACT logic family, which offers AC speed performance with TTL-compatible inputs. It is part of a broader range of multiplexers and demultiplexers designed for digital signal routing. The 74ACT series is known for reduced power consumption compared to older logic families while maintaining robust noise immunity and drive capabilities suitable for various digital circuit applications.

Signal Switches, Multiplexers, Decoders Replacement Considerations

Check for equivalent parts from other manufacturers offering similar functionality and pin compatibility. Verify electrical characteristics such as propagation delay and output current capabilities. Ensure the replacement component supports the same PDIP package style. Confirm that the substitute part meets the required operating temperature and voltage specifications.