ON Semiconductor 74LS125DR2 Quad Bus Buffer

The 74LS125DR2 is a high-performance, quad bus buffer produced by ON Semiconductor, designed to provide interface buffering for a wide range of digital applications. This integrated circuit features four independent non-inverting buffer gates with 3-state outputs, making it an ideal component for driving bus lines or buffer memory address registers.

Key Features

• Logic Type: Quad Non-Inverting Buffers with 3-State Outputs
• Logic Family: LS
• Supply Voltage Range: 4.75V to 5.25V
• Output Drive Capability: Capable of driving 15 LS-TTL loads
• High-Level Output Current: -0.4 mA
• Low-Level Output Current: 8 mA
• Propagation Delay Time: 9.5 ns (max)
• Operating Temperature Range: 0°C to 70°C
• Package: SOIC-14 (SMD)

Product Description

The 74LS125DR2 is a versatile quad buffer that features non-inverting 3-state outputs, which can be placed in a high-impedance state, effectively disconnecting the output from the rest of the circuit. This is particularly useful in bus-oriented systems where multiple outputs can share a common bus line without interference.

Each buffer has its own output enable input, which controls the state of the corresponding output. When the output enable input is high, the output is in a high-impedance state, regardless of the input signal. When the output enable input is low, the buffer's output actively reflects the input signal, providing a high drive capability suitable for heavy loads.

The 74LS125DR2 operates over a supply voltage range of 4.75V to 5.25V and offers a high noise immunity characteristic of the LS logic family. Its propagation delay is minimized, ensuring fast response times for critical applications. The device comes in a space-saving SOIC-14 package, which is widely used in surface-mount technology (SMT), making it suitable for compact PCB designs.

With its robust design and ON Semiconductor's commitment to quality, the 74LS125DR2 is a reliable choice for systems requiring high-speed, low-power operation and the ability to drive multiple loads without signal degradation.