ROHM Semiconductor

BU4011B

BU4011B Description

The BU4011B from ROHM Semiconductor is a quad 2-input NAND gate integrated circuit (IC) belonging to the 4000B series, designed for reliable digital logic operations. Housed in a 14-pin DIP (Dual In-line Package) with through-hole mounting, this IC operates over a wide voltage range of 3V to 16V, making it versatile for various logic-level applications. With a maximum propagation delay of 40ns at 15V and 50pF load, it ensures efficient signal processing in low-to-medium-speed digital circuits. The device features low quiescent current (4 µA max), enhancing power efficiency, and supports output currents of 1.2mA (High) and 3mA (Low), enabling robust drive capabilities.

BU4011B Features

• Logic Type: Quad 2-input NAND gate with 4 independent circuits in a single package.
• Wide Voltage Range: 3V–16V operation, compatible with TTL and CMOS logic levels.
• Low Power Consumption: 4 µA max quiescent current ideal for battery-powered systems.
• High Noise Immunity: Input logic levels of 1.5V–4V (Low) and 3.5V–11V (High) ensure reliable operation in noisy environments.
• Robust Output Drive: 1.2mA (High) / 3mA (Low) current capability for interfacing with multiple loads.
• Durable Packaging: Through-hole DIP for easy prototyping and repair.
• Compliance: ROHS3 compliant, REACH unaffected, and EAR99 classified for global use.

BU4011B Applications

The BU4011B is ideal for:

• Digital Logic Systems: Used in combinational logic circuits, flip-flops, and oscillators.
• Industrial Control: Reliable operation in harsh environments due to wide voltage tolerance.
• Consumer Electronics: Power-efficient logic gates for remote controls, timers, and display drivers.
• Automotive Electronics: Suitable for low-power sensor interfaces and signal conditioning.
• Prototyping & Education: Easy-to-use DIP package for breadboard-based designs.

Conclusion of BU4011B

The BU4011B stands out as a versatile, low-power NAND gate IC with wide voltage compatibility and high noise immunity, making it suitable for diverse digital applications. While marked as obsolete, its durability, efficiency, and ease of integration ensure continued relevance in legacy systems, industrial controls, and educational projects. ROHM Semiconductor’s adherence to ROHS3 and REACH standards further underscores its reliability for environmentally conscious designs.