DEV Community

WilliamLee003
WilliamLee003

Posted on

ULN2003A vs ULN2803A? Who is better?

ULN2803A and ULN2003A are Darlington array ICs used to interface Logic circuits, such as microcontroller circuits, to high power devices. During the early days of your electronics tour, you may not understand the difference between these two ICs. This blog is to give you an idea about the major difference between these two ICs.

If you want to learn more, you can follow te below link to see the article about these product.
ULN2003A is a seven-channel Darlington array used to interface microcontrollers to high voltage, high current devices such as solenoids, lamps, relays, etc. It has the capacity to drive 500mA into a single channel, up to 250mA per channel if four of the seven channels are active and 125 mA per channel if all the seven channels are active. Its output has clamp diodes for transient suppression to protect the low-power microcontroller circuits.
The ULN2003 is the replacement for the ULN2803 when using the Prop-1 Trainer Board or when using P7 (Prop-1) or P15 (Prop-2 and Prop-SX) for serial communications with devices like the AP-8, DC-16, FC-4, and RC-4.

Image description

ULN2803 is an eight-channel Darlington array used to interface microcontrollers to high voltage, high current devices such as solenoids, lamps, relays, etc. It has the capacity to drive 500mA into a single channel, up to 250mA per channel if four of the eight channels are active and 125 mA per channel if all the eight channels are active. Its output has clamp diodes for transient suppression to protect the low-power microcontroller circuits. ULN2803 is commonly used for controlling large seven-segment displays.

Image description

Billboard image

The Next Generation Developer Platform

Coherence is the first Platform-as-a-Service you can control. Unlike "black-box" platforms that are opinionated about the infra you can deploy, Coherence is powered by CNC, the open-source IaC framework, which offers limitless customization.

Learn more

Top comments (0)

A Workflow Copilot. Tailored to You.

Pieces.app image

Our desktop app, with its intelligent copilot, streamlines coding by generating snippets, extracting code from screenshots, and accelerating problem-solving.

Read the docs

👋 Kindness is contagious

Please leave a ❤️ or a friendly comment on this post if you found it helpful!

Okay