The ULN2003A-ULN2004A ULN2001A-ULN2002A are a high voltage, high current darlington arrays each containing seven open collector darlington pairs with common emitters, 500mA per channel, 600mA peak, 50V, integrated suppression diodes, TTL/CMOS/PMOS/DTL compatible inputs, inputs pinned opposite outputs.
The ULN2001A, ULN2002A, ULN2003A and ULN2004A are high‑voltage, high‑current Darlington arrays with seven open‑collector drivers per package. Each channel can handle 500 mA continuous (600 mA peak) and includes integrated suppression diodes for inductive loads. The devices are compatible with TTL, CMOS, DTL, PMOS and other common logic families.
The datasheet lists absolute maximum ratings, thermal data, electrical characteristics, test circuits, and detailed mechanical dimensions for both DIP‑16 and SO‑16 packages. It also includes typical performance graphs such as collector current versus input current and duty‑cycle curves.
| Output current per driver | 500 mA (600 mA peak) |
|---|---|
| Output voltage | 50 V |
| Input voltage (ULN2002A/D‑2003A/D‑2004A/D) | 30 V |
| Continuous collector current | 500 mA |
| Thermal resistance (junction‑ambient) | 70 °C/W (max) |
The maximum output voltage is 50 V.
The typical input current is 0.93 mA.
The maximum junction‑to‑ambient thermal resistance is 70 °C/W.
Yes, they are also available in a small outline SO‑16 package.