STMicroelectronics

M74HC365B1R

M74HC365B1R Description

The M74HC365B1R from STMicroelectronics is a high-performance 6-bit non-inverting buffer/driver integrated circuit (IC) designed for robust signal conditioning in digital systems. Housed in a 16-pin DIP (Dual In-line Package), this through-hole-mount device operates within a 2V to 6V supply voltage range, making it compatible with TTL and CMOS logic levels. As part of the 74HC series, it delivers balanced output current (7.8mA sink/source) and features low power consumption, ensuring efficient signal integrity in demanding applications. Though marked Obsolete, it remains relevant for legacy designs due to its REACH Unaffected and ROHS3 Compliant status, adhering to environmental regulations.

M74HC365B1R Features

• 6-Bit Non-Inverting Buffer: Ensures signal fidelity with no logic-level inversion.
• Wide Voltage Range (2V–6V): Supports mixed-voltage systems and backward compatibility.
• High Output Drive (7.8mA): Capable of driving capacitive loads or multiple inputs.
• Low Power Consumption: HC technology minimizes energy use in battery-operated devices.
• Robust Packaging: 16DIP tube packaging enhances durability for prototyping and industrial use.
• MSL 1 (Unlimited): No moisture sensitivity concerns for extended storage or handling.

Advantages Over Competitors: Unlike generic buffers, the M74HC365B1R offers symmetrical current sourcing/sinking, reducing signal skew in bidirectional applications. Its wide operating voltage outperforms fixed-voltage alternatives, while the through-hole design simplifies repairs in legacy systems.

M74HC365B1R Applications

• Bus Buffering: Isolates and strengthens signals in shared data buses (e.g., vintage computing).
• CMOS/TTL Interface: Bridges logic families in mixed-voltage PCBs.
• Industrial Control Systems: Reliable signal conditioning in harsh environments.
• Test Equipment: Provides stable signal amplification for measurement devices.
• Retro Electronics: Ideal for repairing or replicating obsolete digital hardware.

Conclusion of M74HC365B1R

The M74HC365B1R is a versatile, albeit obsolete, buffer IC that excels in signal integrity and voltage adaptability. Its high drive strength and low power profile make it suitable for legacy upgrades, industrial controls, and niche electronics. While newer alternatives exist, this device remains a pragmatic choice for designers prioritizing reliability and compatibility in constrained voltage environments.