74ACT11257NG4

Signal Switches, Multiplexers, Decoders Overview

The Texas Instruments 74ACT11257NG4 is a quadruple 2-line to 1-line data selector/multiplexer with 3-state outputs. 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 (Enhanced-Performance Implanted CMOS) process. Propagation delays range from 6.4 ns to 9.4 ns depending on the signal path, while output drive capabilities reach ±24 mA.

Signal Switches, Multiplexers, Decoders Feature Summary

• TTL-voltage compatible inputs allow direct interfacing with standard logic systems.
• Three-state outputs interface directly with system buses without loading data lines when disabled.
• Flow-through architecture optimizes printed circuit board layout efficiency.
• Center-pin VCC and GND configurations minimize high-speed switching noise.

Signal Switches, Multiplexers, Decoders Applications

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

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify that the component matches the specific N package designation for standard plastic DIP construction. Confirm the presence of the 'G4' suffix indicates lead-free and RoHS compliance status as defined by manufacturer specifications. Ensure the ordering information aligns with current production data sheets to validate active status and availability parameters before finalizing procurement decisions.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when a quad multiplexer with three-state outputs is required for bus-oriented designs. The ACT series provides speed comparable to LS logic but with CMOS power consumption. Verify that the 4.5 V to 5.5 V supply requirement fits the target system voltage rails. Consider the through-hole DIP package constraints if PCB space allows for larger footprints compared to surface-mount alternatives.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the 74ACT logic family, designed for high-speed digital applications requiring low power dissipation. It serves as a quadruple version of the single-channel multiplexer functions found in other members of the series. The device integrates four independent 2-to-1 selectors, each capable of driving a system bus via its three-state output capability.

Signal Switches, Multiplexers, Decoders Replacement Considerations

Substitute parts must maintain the same logical function and package type. Compatible options include the 74AC11257 or 74HC11257 variants, provided they support the required voltage range and pinout compatibility. Verify that any replacement maintains the three-state output functionality and propagation delay characteristics suitable for the application timing requirements.