M74HC148RM13TR

Overview

The M74HC148RM13TR is a priority encoder manufactured by STMicroelectronics, belonging to the 74HC logic series. It integrates one 8-to-3 line encoder circuit within a single package. The device operates on a single power supply with a voltage range of 2V to 6V. It utilizes a 16-SOIC surface-mount package with a width of 3.90mm. The component supports output currents of 5.2mA for both high and low states. It functions reliably across an extended temperature range from -55°C to 125°C.

Feature Summary

• Encodes eight active-low input lines into three-bit binary codes with priority handling
• Provides active-low outputs for data representation and group signal indication
• Features enable inputs for cascading multiple units or system control

Applications

• Keyboard encoding systems
• Interrupt request management
• Data multiplexing circuits

Procurement Notes

Verify the specific suffix RM13TR against official datasheets to confirm the SOIC-16 package and tape-and-reel packaging configuration. Confirm RoHS compliance status as required by project specifications. Check current lifecycle status as this part may be discontinued. Ensure compatibility with existing PCB footprints before finalizing procurement decisions.

Selection Notes

Select this component when an 8-to-3 priority encoding function is required in HC logic families. Verify that the 2V to 6V operating voltage range matches the system power supply. Ensure the 16-SOIC package dimensions fit the available board space. Consider the -55°C to 125°C temperature rating for industrial or automotive environments requiring wide thermal stability.

Part Context

This integrated circuit belongs to the standard 74HC family of high-speed CMOS logic devices. It provides compatible performance with previous 74HCT and 74HC generations while offering improved speed and lower power consumption. The device is designed for general-purpose digital logic applications requiring reliable binary encoding functionality in compact surface-mount packages.

Replacement Considerations

SN74HC148DR from Texas Instruments is listed as a direct substitute.