Description: NE556N NE556 LM556 556 Dual Timer IC Bipolar IC Timer Oscillator DIP 14 Pin Dual Timer IC

NE556N NE556 LM556 556 Dual Timer Bipolar Oscillator Operational Amplifier Op-Amp IC OPAMP DIP-14 14 Pin Leads Dual In Line Package Chip

The NE556 dual monolithic timing circuit is a highly stable controller capable of producing accurate time delays or oscillation. In the time delay mode of op-eration, the time is precisely controlled by one exter-nal resistor and capacitor. For a stable operation as an oscillator, the free running frequency and the duty cycle are both accurately controlled with two exter-nal resistors and one capacitor. The circuit may be triggered and reset on falling waveforms, and the output structure can source or sink up to 200mA.

Features:

• Low turn off time.
• Maximum operating frequency greater than 500kHz.
• Timing from microseconds to hours.
• Operates in both astable and monostable modes.
• High output current can source or sink 200mA.
• Adjustable duty cycle.
• TTL compatible.
• Temperature stability of 0.005% per  ^oc.

Specifications:

• Two precision Timers in one single package
• Typical operating voltage is +5V, can withstand a maximum of +18V.
• The source/sink current of the output pin is 150mA
• Minimum Threshold voltage is 2.4 @ Vcc=5V
• Operating Temperature is 70 degree Celsius.
• Available in 14-pin PDIP, SOIC, and VSSOP packages

Note: The above values are mentioned for PDIP package, Complete Technical Details can be found at the NE556 datasheet given at the end of this page.

Alternatives Dual Timer IC

LM556

Where to use NE556 IC

The NE556 IC is the dual version of NE555 IC, meaning the NE556 has two timers inside it. As we know 555 ICs have been used for a long time now due to their reliable properties and applications. The NE556 can also be used for all those application additionally since this works with CMOS technology we can have two timers inside a single package with improved characteristics.

So if you are looking for a modern replacement for the 555 Timer IC then NE556 might be the right choice for you.

Difference Between 555 and 556 IC

The NE556 is the successor of the classic 555 Timer IC. It has two Timers inside a single package. This reduces the form factor and complexity of the system. Functionality and pin description wise both 555 and 556 are identical.

How to use NE556 IC

Application wise both NE555 and NE556 are one and the same, so if you want to know the basic of the Timer IC then read through the NE555 page. Since the NE556 is a 14-pin dual timer package there are two sets of all the timer pins (Threshold, Out, Trigger, Control Voltage, Discharge) and both the timer share the same Vcc and ground pins.

Timer IC’s are the most commonly used ICs for timing and Pulse generation applications. They can adopt itself into various applications due to its different operating modes. They are very simple to understand and if we take a look at the components present inside as shown below.

There are three resistors of value 5K, which gives this IC it’s iconic name “555 Timer”. It has dual comparators and flip-flop which will make this IC operated in three different modes such as Astable, Monostable and Bistable(Schimitt) Mode.

Applications

• Time Delay Generation
• Pulse Width Modulation
• Pulse generation
• Precision Timing
• Sequential Timing circuits

Package Include:

• 1 x NE556N NE556 LM556 556 Dual Timer IC Bipolar IC Timer Oscillator DIP 14 Pin Dual Timer IC