The DS8859AJ is a dual high-voltage peripheral driver from National Semiconductor (now Texas Instruments), designed for interfacing low-level logic signals to high-voltage or high-current loads. Each driver in the DS8859AJ can drive inductive loads such as relays, solenoids, and stepper motors, and also features transient suppression diodes for protection. This device is particularly suitable for applications requiring robust and reliable control of external devices.

Applications:

• Relay drivers: Controlling relays in industrial control systems and automotive applications.
• Solenoid drivers: Driving solenoids in machinery and automation equipment.
• Stepper motor drivers: Providing the necessary current to drive stepper motors.
• Lamp drivers: Driving incandescent lamps and other lighting elements.
• Hammer drivers: Driving print hammers in dot matrix printers.
• Line drivers: Driving signals over long distances with minimal signal degradation.
• High-voltage switches: Switching high-voltage signals in various applications.

Features:

• Dual high-voltage drivers: Provides two independent driver channels.
• High output voltage: Capable of withstanding up to 80V.
• High output current: Each driver can deliver up to 300mA.
• Transient suppression diodes: Protect the driver from inductive kickback.
• TTL and DTL compatibility: Interfaces easily with standard logic families.
• High speed switching: Enables fast and efficient control of loads.
• Wide operating temperature range: Suitable for use in harsh environments.

Benefits:

• Simplified interface between logic circuits and high-power loads.
• Reduced component count due to integrated dual drivers.
• Increased system reliability due to robust design and protection features.
• Improved system performance with high current and voltage handling capabilities.
• Easy to use and integrate into existing designs.

Additional Details:

The DS8859AJ typically comes in an 8-pin DIP (Dual In-line Package). The transient suppression diodes are crucial for protecting the driver from voltage spikes generated when switching inductive loads. The device is suitable for applications where precise and reliable control of high-voltage or high-current loads is required. Its compatibility with TTL and DTL logic families makes it easy to interface with a wide range of microcontrollers and other digital circuits.