CD74HCT157MT

Overview

The CD74HCT157MT is a high-speed CMOS logic multiplexer manufactured by Texas Instruments. It belongs to the HCT series, designed for compatibility with HC/HCT logic families. The device integrates four independent 2-line-to-1-line data selectors within a single package. It operates within a supply voltage range of 4.5 V to 5.5 V and supports surface-mount installation in an SOIC-16 package. The component functions reliably across an extended temperature range from -40 °C to +85 °C, ensuring stable performance in industrial applications.

Feature Summary

• Integrates four independent 2-input multiplexers into a single compact package
• Provides high-speed signal routing capabilities suitable for digital systems
• Ensures TTL-compatible input levels through HCT logic family design

Applications

• Data routing in digital communication systems
• Signal selection in microprocessor-based control circuits
• Address decoding and bus switching applications

Procurement Notes

Verify the specific manufacturer datasheet for the CD74HCT157MT to confirm exact electrical characteristics and pinout configurations. Ensure that the selected component meets the required operating temperature and voltage specifications for the intended application environment. Cross-reference with official Texas Instruments documentation to validate package details and functional integrity before integration.

Selection Notes

Select this component when multiple independent 2-to-1 signal paths are required within a limited board space. The HCT series compatibility makes it suitable for systems interfacing with standard TTL or CMOS logic levels. Consider the SOIC-16 package for surface-mount assembly processes requiring moderate pin density and reliable thermal performance.

Part Context

This part is part of the broader CD74HCT logic family, which offers high-speed operation with TTL-compatible inputs. The multiplexer configuration allows for efficient management of multiple data sources, directing one of two inputs to a single output based on control signals. This functionality is essential for managing data flow in complex digital architectures.

Replacement Considerations

Compatible substitutes include other 2-to-1 multiplexers from the same logic family, such as the CD74HC157 or equivalent parts from other manufacturers offering identical pinouts and logical functions. Verify voltage tolerance and propagation delay specifications to ensure seamless replacement without circuit modification.