74ACT11257N

Signal Switches, Multiplexers, Decoders Overview

The SN74ACT11257N is a quadruple 2-line to 1-line data selector/multiplexer with 3-state outputs manufactured by Texas Instruments. It operates within a supply voltage range of 4.5 V to 5.5 V and supports an operating temperature range from -40°C to 85°C. The device features TTL-voltage compatible inputs and utilizes the EPIC (Enhanced-Performance Implanted CMOS) process. Key electrical characteristics include high-level output current of -24 mA and low-level output current of 24 mA. Propagation delays are specified with maximum values up to 9.4 ns depending on signal path.

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 specific part number matches the required package type, as the 74ACT11257 family includes various surface mount and through-hole options. Confirm RoHS compliance status and lead finish details against the latest manufacturer documentation before ordering. Ensure design specifications align with the recommended operating conditions for voltage and temperature ranges.

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 faster switching speeds compared to standard AC logic while maintaining compatibility with TTL input levels. Consider the PDIP-20 package for through-hole prototyping or assembly requirements where surface mount technology is not feasible.

Signal Switches, Multiplexers, Decoders Part Context

This device belongs to the Texas Instruments 74ACT logic family, which employs Enhanced-Performance Implanted CMOS technology. The family is designed for high-speed digital applications requiring fast propagation delays and low power consumption. The 74ACT11257 specifically addresses data routing needs in complex digital systems requiring isolated bus connections.

Signal Switches, Multiplexers, Decoders Replacement Considerations

Check for equivalent parts such as the 74FCT11257 or 74HC11257 if voltage levels or speed requirements differ. Verify pinout compatibility and electrical characteristics before substituting with other manufacturers' multiplexer ICs.