Pull-down resistors work in the same manner as pull-up resistors, except that they pull the pin to a logical low value. They are connected between ground and the appropriate pin on a device. An example of a pull-down resistor in a digital circuit can be seen in the following figure. P...
Pull-up resistors are defined as resistors which are used to ensure that a wire is pulled to a high logical level in the absence of an input signal. This means that pull-down resistors are connected between ground and the appropriate pin on a device. Though they are less common than pull...
上拉电阻与下拉电阻（Pull-up resistor and pull-down resistor）1, when the TTL driving circuit of COMS circuit, if the high level is lower than the minimum high level COMS circuit output TTL circuit (usually 3.5V), then you need to pull in the resistance of the output end of the TTL, ...
ThePCIe-6509has user-configurable pull-up and pull-down resistors. The DIO lines on thePCIe-6509are connected to anNI ASICthat contains a weak pull-down resistor(47 kΩ, typical), and each DIO line is connected to a software-selectable strong pull-up resistor(4.7 kΩ, typical), as ...
to connect with pull or pull down resistors 2) OD or OC (open drain or open collector pin pin type), this type of external pull-up resistors to achieve line and function (at the same time, a plurality of output can be directly connected. Typical applications are: multiple chips on...
The pull-up or pull-down resistors are used ONLY with digital input pins. If we use a pull-up resistor, one side of the resistor is connected to the digital input pin and the other side is connected to VCC ⇒ That is why it is called pull-up If we use a pull-down resistor, on...
What is the purpose of Pull up and Pull down resistors and how the absence of these will affect the circuits? Thanks Answers: 1.by Papabravo The purpose of these resistors is to force an output or input to go to a defined state. This may happen for lots of different...
And this is exactly why we use pull up and pull down resistors. Pull up resistors pull up a pin to a HIGH state. Pull down resistors pull down a pin to a LOW state. Therefore, we have well-defined pins. When pins are well defined, we have control over the circuit. When pins...
THE INTERNAL PULL-UP RESISTORS WHAT IS A PULL-UP / PULL-DOWN RESISTOR 18.Oct.2024 INTRODUCTION When using a microcontroller or any other digital logic devices we encounter the concept of pull-up resistors. They ensure us to maintain the desired state of a logic circuit, whatever the conditi...
Pull-up and pull-down resistors are a critical part of many electronic circuits. In this article, we'll learn what they do, how they work, and how to use them in your own circuits.