The DS2001CN is a discontinued high-current, high-voltage Darlington transistor array manufactured by National Semiconductor, now a part of Texas Instruments (TI). This device is designed to interface between low-level logic circuitry and higher current/voltage loads. It consists of seven NPN Darlington transistor pairs, each capable of sinking substantial current, making it suitable for driving a variety of loads such as relays, solenoids, lamps, and LED displays.

Applications

• Driving relays and solenoids in industrial control systems.
• Driving LED displays and indicator lights.
• Interfacing logic circuits with high-voltage or high-current devices.
• Use in motor control circuits.
• Driving thermal printers.

Features

• Seven independent Darlington transistor pairs in a single package.
• High output voltage capability (typically up to 50V).
• High output current sinking capability (typically up to 500mA per channel).
• Input compatible with various logic families, including TTL and CMOS.
• Internal suppression diodes for inductive loads.
• Available in a through-hole package for easy mounting.

Benefits

• Simplified interface between low-level logic and high-power loads.
• Reduced component count and board space requirements.
• Protection against voltage spikes from inductive loads.
• Increased reliability due to integrated design.
• Cost-effective solution for driving multiple loads.

Additional Details

The DS2001CN operates over a wide temperature range. Each Darlington pair includes an internal suppression diode, which protects the device from voltage transients generated when switching inductive loads. This feature is critical for applications involving relays and solenoids. The device's input structure allows for direct interfacing with TTL, CMOS, PMOS, and DTL logic levels. Due to its end-of-life status, finding direct replacements might be necessary for new designs.