内容提示: 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 ...
Pull up is to clamp an uncertain signal to a high level with a resistor, and the resistor also acts as a current limiter. In the same way, pull down means to clamp the uncertain signal to a low level through a resistor. To pull up is to input current to the device, and ...
1, indicate the chip pin on the pull-up or pull-down resistor is a resistor or equivalent resistor in the chip design. The design of pin internal resistance, for when the user does not need to use the pin functions, without external components, can set the pin to the default stat...
The most basic function of pull-up or pull-down resistors (collectively referred to as "pull resistors") is to clamp a signal line with an uncertain state to a high level (pull-up) or a low level (pull-down) through a resistor. Regardless of its specific usage, this basic function is...
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, ...
Let's take the button with a pull-up or pull-down resistor for example. The other digital input sensors are the same. They have the following differences:In wiring:The button with a pull-up resistorOne side of the resistor is connected to the input pin of Arduino, the other side of ...
Pull up resistor vs pull down; The Differences To better illustrate the differences between pull-up and pull-down resistors, I’ll be providing a side-to-side comparison through a table below: As observed, there aren’t much differences between both type resistors as they share vastly similar...
Part Number: TXS0102 Hi, I use TXS0102 for the tx rx pins of the BG95M3 GPS&GSM integrated circuit. In the datasheet of TXS0102, it tells me to pull down
To calculate the pull-down resistor value, it’s slightly different from the pull-up resistor value. Knowing that current is 100uA, we’ll take 0.5v as our pull-down voltage since the input is 0.8v. Thus, applying our R = V/I once again, but this time we don’t have to minus, ...
A TTL input is actually the emitter of a multiple emitter transistor. It wants to source current into some kind of load. The amount of current is a "standard TTL load" of 1.6 mA. The biggest pulldown resistor you could use would be 0.8V/1.6 mA or 500 ohms. A smaller resistor...