74ACT11257PW

Signal Switches, Multiplexers, Decoders Overview

The Texas Instruments 74ACT11257PW is a quadruple 2-line to 1-line data selector/multiplexer with 3-state outputs, housed in a 20-pin TSSOP package. It operates within a supply voltage range of 4.5 V to 5.5 V and supports an operating temperature from –40°C to 85°C. The device features TTL-voltage compatible inputs and utilizes an EPIC CMOS process. Propagation delays are specified between 6.4 ns and 9.4 ns depending on the signal path.

Signal Switches, Multiplexers, Decoders Feature Summary

• TTL-voltage compatible inputs allow direct interfacing with system buses without level shifting.
• Three-state outputs provide high-impedance states to prevent bus loading when disabled.
• Flow-through architecture optimizes printed circuit board layout for high-speed applications.

Signal Switches, Multiplexers, Decoders Applications

• Bus interface routing from multiple sources in high-performance systems
• Multiplexing signals from 4-bit data sources to output data lines
• Data selection in bus-organized digital architectures

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific ordering suffix against the manufacturer's current Package Option Addendum to confirm lead finish and moisture sensitivity levels. Ensure the procurement matches the active status designation. Confirm RoHS compliance details align with project requirements before finalizing orders.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component for designs requiring quad multiplexing with 3-state control. Verify that the 4.5 V to 5.5 V supply voltage range matches the system power rails. Consider the TSSOP package dimensions for PCB footprint constraints and ensure thermal management meets the specified operating temperature limits.

Signal Switches, Multiplexers, Decoders Part Context

This device belongs to the 74ACT logic family, utilizing Enhanced-Performance Implanted CMOS technology. It serves as a standard logic solution for data routing tasks. The PW suffix specifically denotes the Shrink Small-Outline (TSSOP) plastic package variant available from Texas Instruments.

Signal Switches, Multiplexers, Decoders Replacement Considerations

Direct substitutes include the 74ACT11257DW (SOIC package) and 74ACT11257DBR (SSOP package). Cross-referencing pinouts and electrical characteristics is required when substituting packages.

Signal Switches, Multiplexers, Decoders FAQ

Are the inputs compatible with TTL logic levels?

Yes, the inputs are explicitly designed to be TTL-voltage compatible.

What is the function of the OE input?

The Output Enable (OE) input controls the three-state outputs; a high logic level places the outputs in a high-impedance state.