The eight NPN Darlington-connected transistors in this family of arrays are ideally suited for interfacing between low logic level digital circuitry (such as TTL, CMOS, or PMOS/NMOS) and the higher current/voltage requirements of lamps, relays, printer hammers, or other similar loads for a broad range of computer, industrial, and consumer applications. All devices feature open–collector outputs and free-wheeling clamp diodes for transient suppression.
ULN2804 Pinout
ULN2804 Pin Configuration
| PIN NO | PIN NAME | DESCRIPTION |
|---|---|---|
| 1 | 1B | Input Pin1B |
| 2 | 2B | Input Pin 2B |
| 3 | 3B | Input Pin 3B |
| 4 | 4B | Input Pin 4B |
| 5 | 5B | Input Pin 5B |
| 6 | 6B | Input Pin 6B |
| 7 | 7B | Input Pin 7B |
| 8 | 8B | Input Pin 8B |
| 9 | GND | Ground Pin |
| 10 | COM | Common Pin |
| 11 | 8C | Output Pin 8C |
| 12 | 7C | Output Pin 7C |
| 13 | 6C | Output Pin 6C |
| 14 | 5C | Output Pin 5C |
| 15 | 4C | Output Pin 4C |
| 16 | 3C | Output Pin 3C |
| 17 | 2C | Output Pin 2C |
| 18 | 1C | Output Pin 1C |
ULN2804 SOP-18 BJT – Bipolar Transistor Integration Features
| Name of the product | ULN2804 |
| Product Category | Serial Transistor |
| Product Sub-Category | BJT – Bipolar Transistor Integration |
| Package Type | SOP-18-300mil |
| Mounting Type | SMD |
| Number of Pins | 18 |
| Transistor Polarity | NPN |
| Output Voltage | 50V |
| Collector current | 500mA |
| hFE | 1000 |
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