Description

The ULN2074B is a transistor array within the category of transistors (BJT) - Arrays, designed to interface logic with a broad range of high voltage and high current loads. This device features four NPN darlington switches which are each capable of delivering up to 1.5 A with a minimum breakdown threshold of 80 V and a sustaining voltage of 50 V. The ULN2065B, ULN2067B, ULN2069B, and ULN2071B varieties come equipped with integral suppression diodes intended for inductive loads and share a common emitter. On the other hand, the ULN2075B and ULN2077B varieties boast of isolated darlington pinouts and are ideal for applications such as emitter follower configurations. With regards to the input compatibility, The ULN2065B, ULN2069B and ULN2075B varieties are compatible with popular 5 V logic families, while the ULN2067B, ULN2071B and ULN2077B varieties are compatible with 6-15 VCMOS and PMOS. The ULN2069B and ULN2071B versions come with a pre-driver stage which offers additional gain thereby reducing the load on the control logic.

Specifications and features

• OUTPUT CURRENT TO 1.5 A EACH DARLINGTON
• MINIMUM BREAKDOWN 80 V
• SUSTAINING VOLTAGE AT LEAST 50 V
• INTEGRAL SUPPRESSION DIODES (ULN2065B, ULN2067B, ULN2069B and ULN2071B)
• ISOLATED DARLINGTON PINOUT (ULN2075B and ULN2077B)
• COMPATIBLE VERSIONS WITH ALL POPULAR LOGIC FAMILIES

Application Scenarios

The ULN2074B is ideal for interface logic with high current and high voltage loads applications. Due to the different variations available, this device is also useful in applications requiring integral suppression diodes and those requiring isolated darlington pinouts.

Comparison

• Can interface logic with a broad range of high voltage and high current loads.
• Different variations available to cater for various requirements in applications including integral suppression diodes and isolated darlington pinouts.
• Compatible with popular logic families.

• The device is not compatible with all logic families, limiting its application in some scenarios.
• May require a pre-driver stage for applications where additional gain is necessary.