74ACT157MTCX

Signal Switches, Multiplexers, Decoders Overview

The onsemi 74ACT157MTCX is a high-speed quad 2-input multiplexer housed in a 16-lead Thin Shrink Small Outline Package (TSSOP). It selects four bits of data from two sources using common Select and Enable inputs, presenting the selected data in true form. 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 characteristics include TTL-compatible inputs, outputs capable of sourcing or sinking 24 mA, and propagation delays ranging from 1.5 ns to 10.5 ns depending on the signal path and load conditions.

Signal Switches, Multiplexers, Decoders Feature Summary

• Features TTL-compatible inputs for direct interfacing with standard logic families.
• Provides high drive capability with outputs capable of sourcing and sinking 24 mA.
• Reduces quiescent current and output impedance by 50% compared to previous generations.

Signal Switches, Multiplexers, Decoders Applications

• Moving data between two groups of registers to common output busses.
• Implementing gating functions as a function generator.
• Selecting data sources in digital control systems.

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify that the specific ordering code includes the 'X' suffix to confirm tape and reel packaging availability. Confirm compatibility with the 4.5V to 5.5V supply voltage range required for ACT series operation. Ensure the design accounts for the specified maximum input edge rate of 125 mV/ns to maintain signal integrity. Check for any specific environmental compliance declarations if required by the target application standards.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when TTL-compatible inputs are necessary alongside high-speed switching capabilities. The 24 mA output drive strength makes it suitable for driving moderate loads without additional buffering. Consider the TSSOP package constraints regarding thermal dissipation and board space. Verify that the system power supply remains strictly within the 4.5V to 5.5V window to ensure correct logic thresholds and performance specifications.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the 74AC/ACT logic family, specifically designed for high-speed digital applications. The AC/ACT157 serves as a quad 2-input multiplexer, functioning as a 4-pole, 2-position switch controlled by a single Select input. It is manufactured under Fairchild Semiconductor technology, now part of onsemi, utilizing FACT architecture for improved performance metrics over earlier standard logic devices.

Signal Switches, Multiplexers, Decoders Replacement Considerations

Direct substitutes include the SN74AHC157PW and SN74AHC157PWR from Texas Instruments. These alternatives offer similar functionality but may differ in specific electrical parameters such as propagation delay and drive strength. Verify pinout compatibility and voltage level matching before implementation.