MC74AC157DTR2G

Overview

The MC74AC157DTR2G is a quad 2-input multiplexer manufactured by onsemi, belonging to the 74AC logic series. It features four independent 2-to-1 data selectors housed in a 16-TSSOP surface-mount package with a 4.40mm width. The device operates on a single power supply ranging from 2V to 6V and supports an extended industrial operating temperature range of -40°C to +85°C. Electrical characteristics include high output drive capabilities of 24mA for both high and low states. The component complies with RoHS3 standards and carries an MSL rating of 1.

Feature Summary

• Integrates four independent 2-to-1 multiplexers within a single integrated circuit
• Provides high-current output drive capability suitable for direct interfacing loads
• Operates across a wide voltage range compatible with various digital logic families
• Designed for surface-mount assembly in compact electronic applications

Applications

• Data routing in digital communication systems
• Signal selection in microcontroller peripheral interfaces
• Address decoding in memory subsystems
• Input selection in test and measurement equipment

Procurement Notes

Verify the specific package variant, as the MC74AC157DTR2G designation corresponds to the TSSOP-16 form factor. Confirm compliance requirements against the official datasheet, noting RoHS3 status. Cross-reference the manufacturer part number with authorized distributor catalogs to ensure authenticity. Check for any recent product change notifications regarding manufacturing site or material declarations before finalizing procurement.

Selection Notes

Select this component when a quad 2-to-1 multiplexer function is required in space-constrained designs utilizing the TSSOP-16 footprint. Ensure the system voltage falls within the 2V to 6V operational range. Consider the 24mA output current capability for load driving requirements. Verify that the -40°C to +85°C temperature range meets the environmental specifications of the target application environment.

Part Context

This component is part of the broader 74AC logic family, which offers higher speed performance compared to standard 74LS equivalents while maintaining CMOS power efficiency. The MC74AC157DTR2G specifically addresses the need for multiple signal paths in a single package, reducing board space compared to discrete solutions. It serves as a fundamental building block for complex digital switching architectures.

Replacement Considerations

The MC74AC257DR2G is a documented substitute offering tri-state outputs for bus-oriented applications. Verify pin compatibility and electrical parameters against the original design requirements before substitution.