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I love the little case they come in, and they all seem to be genuine NE555 ICs. All the ones I've used in projects and testing have worked well. Great price, and a super useful IC to have on hand.
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The 555 timer IC is an integrated circuit (chip) used in a variety of timer, pulse generation, and oscillator applications. The ic 555 can be used to provide time delays, as an oscillator, and as a flip-flop element. Derivatives provide up to four timing circuits in one package. These 555 timer ICs are precision timing circuits capable of producing accurate time delays or oscillations.
In the time-delay or monostable mode of operation, the timed interval is controlled by a single external resistor and capacitor network. In the astable mode of operation, the frequency and duty cycle can be controlled independently with two external resistors and a single external capacitor. The threshold and trigger levels normally are two-thirds and one-third, respectively, of VCC. These levels can be altered by the use of the control voltage terminal. When the trigger input falls below the trigger level, the flip-flop is set and the output goes high. If the trigger input is above the trigger level and the threshold input is above the threshold level, the flip-flop is reset and the output is low. The reset (RESET) input can override all other inputs and can be used to initiate a new timing cycle. When RESET goes low, the flip-flop is reset and the output goes low. When the output is low, a low-impedance path is provided between discharge (DISCH) and ground. The output circuit is capable of sinking or sourcing current up to 200 mA. The operation is specified for supplies of 5 V to 15 V. With a 5-V supply, output levels are compatible with TTL inputs. The NE555 is characterized for operation from 0°C to 70°C. This is characterized for operation from –40°C to 85°C. The NE555 is characterized for operation over the full military range of –55°C to 125°C. Features of the 555 timers are: Supply voltage between 4.5 and 18 volts. supply current 3 to 6 mA, and a Rise/Fall time of 100 nSec.
IC 555 pin diagram
The IC 555 is used in many circuits, for example, a One-shot pulse generator in Monostable mode as an Oscillator in Astable Mode or in Bistable mode to produce a flip/flop type action. It is also used in many types of other circuits for the achievement of various purposes for instance Pulse Amplitude Modulation (PAM), Pulse Width Modulation (PWM), etc. This IC 555 can be configured to use as a monostable multivibrator, an astable multivibrator. If you want to use this 555 timer ic in your projects, there are a few essential components that are helpful are breadboard or vero board , switch , jumper wires , resistors , capacitors and batteries .
Also check 8 Pin DIP IC Socket Base Adaptor available on the Robocraze website. it is designed for 8-pin integrated circuits (ICs) commonly used in electronic devices like timers, oscillators, and digital logic circuits. The socket has a molded notch for proper orientation, making it easy to insert and remove ICs
Supply voltage | 5 - 15 V |
Output current | 225mA |
Junction temperature | 150 °C |
Dimensions (mm) LxWxH | 9.81 x 4.57 x 6.35 |
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The name 555 Timers comes from the fact that three 5kΩ resistors are connected internally to form a voltage divider network between the supply voltage at pin 8 and ground at pin 1.
The 555 timer works by dividing the supply voltage into three parts using three 5kΩ resistors. Two comparators compare these voltages to the input voltage before setting or resetting a flip-flop.
The 555-timer power supply has a wide voltage range of +5 to +18 volts. The 555 timer is drawing 200 mA as its load current. The TTL drives the output of the 555 timer, which has a high output current. The 555 timer has a temperature stability of 50 ppm/degree when changing the temperature.
The IC 555 is used for following applications:
The standard 555 timer IC is composed of two diodes, twenty-five transistors, and fifteen resistors housed in an eight-pin dual in-line package. This timer is known as a 555 Timer because it contains three 5 Kilo-Ohm resistors connected in series to form a voltage divider pattern.
VCC (Voltage Common Collector) has a higher voltage than GND (ground). VCC is a device's power input. It could be either positive or negative in terms of GND. When only a positive power supply is used, VSS (Voltage Source Supply) denotes ground or zero.
The 555 timer generates a square wave when set to astable mode of operation. This configuration is done with an external resistor and capacitor that determines the frequency of the square wave that can be used directly in the TTL circuit. In a monostable mode, a pulse of a certain duration is generated, at the end of which the timer returns to its previous state The working principle of such an 8-pin timer chip is the set and reset of the two flip-flops it contains. Set and reset times are determined by external resistors and capacitors.
555 Timer IC is very popular IC and is mostly used in timing related 555 timer applications. IC NE555 can be used for several purposes like;
Yes, NE555 Timer IC and 555 Timer IC are same. The NE555 is the part number to the timer IC. Generally, the NE555 IC is called by the name 555 Timer IC.
The timer 555 IC circuit consist of Flip-Flops circuit, Comparator and Voltage Divider. The primary function of a 55 Timer IC is to generate precise Timing pulse. It is also used to act as a relaxation oscillator in a 555 circuit.
The IC 555 working has 3 modes of operation:
The 555 timer ic working of all the 3 states are as mentioned below:
The basic elements of 555 timer IC are 25 transistors, 2 diodes, 15 resistors, 2 comparators, flipflop, voltage divider and an discharge transistor.
We can generate clock signals of varying frequencies by varying the values of the external resistors and capacitors of the 555 timer and We can generate clock signals of any frequency.
Pin 5 of the 555 Timer is the control pin. This makes the oscillator cycle more consistent. This pin can also be used to change the internal voltage reference, allowing you to change the oscillator frequency or duty cycle.
I love the little case they come in, and they all seem to be genuine NE555 ICs. All the ones I've used in projects and testing have worked well. Great price, and a super useful IC to have on hand.
A cost-effective and the best solution for electronics projects. This IC delivers reliable timing functions.
This is a great purchase from Robocraze. the IC offers a dependable solution for precise timing in my circuits.
This timer IC is great. I have used it to make an alarm circuit and it working accurately.
It's been 3 months I have been using this and it offers consistent performance in a variety of applications.
I can easily and confidently add this IC to my circuit designs because of its simple pinout. It saves me time and makes prototyping easier.
The size of this 555 chip really hits you when you see it. I've used them for a few prototypes, and they've been reliable. Definitely considering buying them again when needed.
None have failed, seems to be all good 555 chips.
I only tested about 20% but they all worked fine and appear to be new.
This is a versatile timer great for oscillator timer circuits. A number of projects is easily designed and used in a number of configuration.
I haven't checked them all for function, but seem fine.
Great value
. Every IC I have used so far works great.
I have not tried each and every IC but I have used the 555s to make a few Christmas light flashers.