M74HC365B1R

Overview

The M74HC365B1R is a hex bus buffer with three-state outputs manufactured by STMicroelectronics. It belongs to the HC logic series and utilizes silicon gate C2MOS technology. The device features six non-inverting buffers controlled by two enable inputs, G1 and G2. Outputs are enabled only when both enables are low; otherwise, they enter a high-impedance state. It operates within a voltage range of 2 V to 6 V. The component is housed in a 16-DIP package and supports surface mount or through-hole installation styles depending on variant specifics, though this specific suffix indicates DIP.

Feature Summary

• Hex bus buffer configuration with three-state output capability
• Dual enable input control for simultaneous output activation
• High noise immunity with static discharge protection circuits
• Pin and function compatible with standard 74 series 365

Applications

• Data bus buffering in digital systems
• Driving capacitive loads in communication interfaces
• Isolating data lines in microcontroller applications

Procurement Notes

Verify the exact package type and lead configuration against the datasheet before ordering. Confirm RoHS compliance status as manufacturing processes may update. Check for AEC-Q100 qualification if automotive grade requirements apply. Ensure storage conditions meet moisture sensitivity level specifications to prevent damage during soldering.

Selection Notes

Select this component when a hex buffer with three-state outputs is required for bus arbitration. Consider the operating voltage range and propagation delay characteristics relative to system speed. Evaluate power dissipation limits under maximum load conditions. Compare pin compatibility with existing designs to ensure direct replacement feasibility without schematic changes.

Part Context

This part is part of the M74HC365 family of advanced high-speed CMOS devices. It serves as a logical extension of the legacy 74HC365 series, offering improved performance metrics while maintaining backward compatibility. The device is designed for general-purpose digital applications requiring reliable signal buffering and isolation.

Replacement Considerations

• MC74HC365ADTR2G