ic 555 pin configuration

ic 555 pin configuration. IC 555 or ne555 is ic which is often used for various series of timer, multivibrator, and clock generator. Before you use IC 555 you need to know the configuration of IC 555 pin first

This IC was designed and created by Hans R. Camenzind in 1970 and introduced in 1971 by Signetics

Its original name is SE555 / NE555 and is dubbed as “The IC Time Machine”

What is the meaning and function of each pin ic 555, why named 555?

Understand and function of each pin ic 555

It is named 555 because it is composed of three 5 kΩ resistors that are used on ic internal circuitry. This IC is now still widely used because of its ease, generosity and good stability

Until 2008, an estimated million units were produced each year. Depending on the manufacturer, this IC typically uses more than 20 transistors, 2 diodes and 15 resistors in a silicon semiconductor mounted on a 8 pin DIP pack

Read also simple transformerless power supply circuit

Function of each pin ic 555

The physical shape of IC 555 is as follows

ic 555 pin configuration
Ic ne555

Here’s the ic 555 pin configuration

Pin 1 (GND): This leg is functioning or Negative Terminal of the voltage source DC

Pin 2 (TRIG): serves as a trigger terminal, used to trigger Output to “High”
High conditions will occur when the voltage level on the Trigger leg is changed from High to <1 / 3Vcc (Smaller than 1 / 3Vcc)

Pin 3 (OUT): is an output terminal that has 2 states “High / HIgh” and “Low / Low “or 0 and 1

Pin 4 (RESET): Terminal Reset. Function to return ic to initial condition. If the 4th leg is grounded the IC Output will be low and cause the device to be OFF. Therefore, to ensure the IC is ON, the 4th leg is usually given a “High” signal

Pin 5 (CONT): as a Terminal Control Voltage, provides access to an internal voltage divider. By default, the specified voltage is 2/3 Vcc

Pin 6 (THRES): Threshold terminal, used to make Output to “Low”. The “Low” condition of this Output will occur when the Feet 6 or Threshold Feet is changed from Low to> 1 / 3Vcc (greater than 1 / 3Vcc)

Pin 7 (DISCH): Terminal Discharge. At the “Low” Output, the 7 foot impedance is “Low”. While at the Output “High”, Impedance leg 7 is “High”. The discharge foot is usually associated with a capacitor that serves as a timing interval determinant. The capacitor will charge and discharge along with the impedance on the leg 7. The discharge time determines the Timing Interval of IC555

Pin 8 (Vcc): Positive terminal DC voltage source of about 4.5V or 16V according to the 5V admin experience is sufficient

Similarly an article about the understanding and function of each pin IC 555. Please read also another article about how to convert stereo input into mono

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