Description 

BU4001B series ICs are 2-input positive logic NOR gates, each with four built-in circuits. A buffer achieved by an inverter 

added at the gate output improves the input / output propagation characteristics and minimizes variation in the propagation 

time caused by an increase in the load capacitance. BU4011B series ICs are 2-input positive logic NAND gates. Four 

circuits are contained on a single chip. An inverter-based buffer is included at the gate output, enabling improved input / 

output propagation characteristics, and an increased load capacitance minimizes fluctuations in the propagation time. 

BU4030B and BU4070B series ICs are exclusive OR gates, each with four built-in circuits. An inverter-based buffer was 

incorporated at the gate output for enhanced I/O voltage characteristics, and the load capacitance has been increased in 

order to minimize fluctuations in the propagation time. BU4081B series are 2-input positive logic AND gates with four circuits 

mounted on a single chip. An inverter-type buffer was added to the gate output, improving input/output transmission speed, 

and an increased load capacitance suppresses fluctuations in the transmission time. BU4093B series ICs are 4-circuit, 

2-input NAND gates whose input pins all have a Schmitt trigger function. BU4069UB series ICs are 6-circuit inverters with no 

buffers. A single-stage gate configuration reduces propagation time. BU4584B series ICs are inverter-type Schmitt trigger 

circuits, each incorporating 6 circuits in a single chip. 

●Features 

 1) Low power consumption 

 2) Broad operating supply voltage range: 3V to 16V 

 3) High input impedance 

 4) High fan out 

 5) L-TTL2 and LS-TTL1 inputs can be directly driven 

 6) All outputs are equipped with buffers (except for BU4069UB) 

●Applications 

These products are suitable for applications requiring low power consumption and a high degree of noise tolerance 

The BU4030B/BU4070B series can be used in digital comparators and parity circuits 

The BU4093B series are suitable as line receivers, waveform shaping and multi-vibrators, etc. 

The BU4584B series can be used in waveform shaping circuits for inputs with a slow rise time and fall time

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