| Drivers per package | 7 |
| Switching voltage (Max) (V) | 50 |
| Output voltage (Max) (V) | 50 |
| Peak output current (mA) | 500 |
| Delay time (Typ) (ns) | 250 |
| Input compatibility | CMOS, TTL |
| Vol @ lowest spec current (Typ) (mV) | 900 |
| Iout/ch (Max) (mA) | 500 |
| Iout_off (Typ) (uA) | 50 |
| Rating | Catalog |
- 500-mA-Rated Collector Current (Single Output)
- High-Voltage Outputs . . . 50 V
- Output Clamp Diodes
- Inputs Compatible With Various Types of Logic
- Relay-Driver Applications
The ULN2004AI is a high-voltage, high-current Darlington transistor array. This device consists of seven npn Darlington pairs that feature high-voltage outputs with common-cathode clamp diodes for switching inductive loads. The collector-current rating of a single Darlington pair is 500 mA. The Darlington pairs can be paralleled for higher-current capability. Applications include relay drivers, hammer drivers, lamp drivers, display drivers (LED and gas discharge), line drivers, and logic buffers.
The ULN2004AI has a 10.5-k. series base resistor for each Darlington pair for operation directly with TTL or 5-V CMOS devices.