Texas Instruments SN7417N Hex Buffer/Driver, DIP14

The Texas Instruments SN7417N is a Hex Buffer/Driver integrated circuit designed for robust signal interfacing. It features high-voltage open-collector outputs, making it ideal for interfacing with high-level circuits such as MOS or for driving high-current loads including indicator lamps and relays. Characterised for use as a buffer for driving TTL inputs, this device ensures reliable logic level translation and signal integrity.

Key to its design is a high sink-current capability of 40mA and a minimum output breakdown voltage of 15V, providing ample drive strength and voltage tolerance for demanding applications. The circuit performs the Boolean function Y=A in positive logic and is fully compatible with most TTL logic families, ensuring easy integration into existing designs.

To simplify system design and enhance signal quality, the inputs incorporate clamping diodes which minimise transmission-line effects. This results in more stable operation and reduces the need for external protection components. With a typical power dissipation of 145mW and an average propagation delay of just 14ns, the SN7417N offers an efficient and responsive solution for digital logic buffering.

Key Features

• High Sink-Current: Capable of sinking up to 40mA, perfect for driving lamps or relay coils.
• Open-Collector Outputs: Facilitates interfacing with higher voltage circuits (like MOS) and allows for wired-OR configurations.
• Input Clamping Diodes: Simplify PCB design by suppressing voltage transients and minimising transmission-line effects.
• Wide Compatibility: Inputs are fully compatible with most TTL circuits, featuring defined input thresholds (2V High-level, 0.8V Low-level).
• Stable Operation: Operates from a 5V supply (4.75V to 5.25V) within a commercial temperature range of 0°C to 70°C.

Supplied in a standard 14-pin DIP package, this robust buffer/driver from a,