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ULN2801A/ from ST,ST Microelectronics

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ULN2801A/

Manufacturer: ST

EIGHT DARLINGTON ARRAYS

Partnumber Manufacturer Quantity Availability
ULN2801A/,ULN2801A ST 250 In Stock

Description and Introduction

EIGHT DARLINGTON ARRAYS **ULN2801A**  
**Manufacturer:** STMicroelectronics (ST)  

### **Specifications:**  
- **Type:** High-Voltage, High-Current Darlington Transistor Array  
- **Configuration:** 8-channel (8 NPN Darlington pairs)  
- **Output Current per Channel:** 500 mA (max)  
- **Output Voltage (Collector-Emitter):** 50 V (max)  
- **Input Voltage (Base-Emitter):** 30 V (max)  
- **Input Compatibility:** TTL, CMOS, PMOS  
- **Clamp Diodes:** Built-in for inductive load protection  
- **Package Options:** DIP-18, SO-18  
- **Operating Temperature Range:** -20°C to +85°C  

### **Descriptions:**  
The ULN2801A is an 8-channel Darlington transistor array designed for interfacing low-level logic circuits with high-voltage/high-current peripheral loads. Each channel includes a Darlington pair with a common emitter and integrated suppression diodes for inductive load protection. It is widely used in relay, solenoid, lamp, and motor driving applications.  

### **Features:**  
- **High-Voltage/High-Current Drive:** Capable of driving loads up to 50 V and 500 mA per channel.  
- **Integrated Clamp Diodes:** Protects against back EMF from inductive loads.  
- **TTL/CMOS/PMOS Compatible Inputs:** Works with 5V TTL, CMOS, and PMOS logic levels.  
- **High Input Impedance:** Simplifies interfacing with logic circuits.  
- **Common-Cathode Clamp Diodes:** Allows easy connection to inductive loads.  
- **Wide Operating Temperature Range:** Suitable for industrial applications.  
- **Package Options:** Available in through-hole (DIP-18) and surface-mount (SO-18) packages.  

This device is commonly used in applications requiring multiple high-power switching, such as printers, industrial control systems, and automotive electronics.

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