M74HCT688RM13TR

Comparators Overview

The M74HCT688RM13TR is an 8-bit identity comparator from STMicroelectronics, belonging to the HCT logic series. It features active low outputs indicating equality (A=B) and utilizes a 20-SOIC package. The device operates with a maximum supply voltage of 5.5V and supports a propagation delay of 32ns at 4.5V with a 50pF load. It provides output currents of 4mA for both high and low states, ensuring robust digital signal processing in parallel comparison applications.

Comparators Feature Summary

• Provides precise 8-bit magnitude comparison functionality
• Features active low outputs for direct equality indication
• Utilizes Schmitt-trigger inputs for noise immunity

Comparators Applications

• Parallel digital data comparison circuits
• Address decoding systems
• Data validation logic modules

Comparators Procurement Notes

Verify the specific suffix RM13TR against official STMicroelectronics documentation to confirm the tape-and-reel packaging configuration. Ensure compatibility with standard SOIC-20 footprints during PCB layout. Cross-reference the datasheet revision date to validate electrical characteristics against current design requirements.

Comparators Selection Notes

Select this component when an 8-bit identity comparator with HCT-compatible input levels is required. It is suitable for designs needing active low equality signals. Consider the 20-SOIC package constraints and verify that the 4mA output drive capability meets the downstream load requirements without additional buffering.

Comparators Part Context

This part belongs to the M74HCT688 family of 8-bit identity comparators manufactured by STMicroelectronics. It is designed for high-speed digital applications requiring reliable magnitude comparison. The HCT series ensures compatibility with standard TTL logic levels while offering CMOS power efficiency.

Comparators Replacement Considerations

Check for equivalent 8-bit identity comparators from other manufacturers with matching pinouts and electrical specifications. Verify that alternative parts support the same 20-SOIC package and HCT input voltage thresholds.