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Name: NE556DR
Brand: Texas Instruments
SKU: NE556DR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Any Feature, including a modified Existing Feature, that is not an Existing Feature.

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Texas Instruments NE556DR

Part No.:: NE556DR

Manufacturer:: Texas Instruments

Package:: 14-SOIC (0.154, 3.90mm Width)

Datasheet:: NE556DR.pdf

Description:: IC OSC TIMER DUAL 100KHZ 14SOIC

In Stock:: 2752

Quantity:: Add To Cart

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NE556DR Specifications

Package/Case:
14-SOIC (0.154, 3.90mm Width)
Packaging:
Tape & Reel (TR),Cut Tape (CT),Digi-Reel®,Bulk
Series:
-
ProductStatus:
Active
Type:
555 Type, Timer/Oscillator (Dual)
Count:
-
Frequency:
100kHz
Voltage-Supply:
4.5V ~ 16V
Current-Supply:
20 mA
OperatingTemperature:
0°C ~ 70°C

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NE556DR information

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NE556DR Typical application Circuitry

NE556DR

The NE556DR is a dual precision timer IC, functioning as two NE555 timers in a single package. It's a highly versatile chip used for generating accurate time delays and oscillations, widely employed in a multitude of applications ranging from simple timing circuits to complex sequential systems.

Applications of NE556DR:

The NE556DR is commonly used in timing circuits, pulse generation, sequential timing, tone generation, and in precision timing solutions. Its reliability and flexibility make it a preferred choice in consumer electronics, industrial controls, and even in hobbyist projects for pulse generation and timing operations.

Key Features of NE556DR:

1. Dual Timer Functionality: Contains two independent timers that can be used simultaneously or separately.

2. Adjustable Duty Cycle: Provides precise control over the output waveforms.

3. High Output Current: Capable of driving TTL or relay outputs.

Detailed Circuit Connection for a Sequential Timing Circuit:

In a sequential timing circuit scenario, where the NE556DR is used to drive a series of events in sequence, the setup involves the following detailed steps:

1. Power Supply Connection:

- VCC Connection: Connect the VCC pin (Pin 14) of the NE556DR to the positive terminal of the power supply.

- Ground Connection: Connect the GND pin (Pin 7) to the ground of the power supply.

2. Timer 1 Configuration (First Stage):

- Trigger Connection: Connect the trigger pin (Pin 6) to a momentary push button switch that connects to ground when pressed.

- Threshold and Discharge: Connect a resistor (R1) from VCC to the threshold pin (Pin 2) and the discharge pin (Pin 1). Also, connect a capacitor (C1) from the threshold pin (Pin 2) to the ground. This sets the timing interval.

- Output Connection: Connect the output pin (Pin 5) to the input of the next stage or to an LED for indication.

3. Timer 2 Configuration (Second Stage):

- Trigger Connection: Connect the trigger pin (Pin 8) to the output of the first timer.

- Threshold and Discharge: Connect a resistor (R2) from VCC to the threshold pin (Pin 12) and the discharge pin (Pin 13). Also, connect a capacitor (C2) from the threshold pin (Pin 12) to the ground. This sets the timing interval for the second stage.

- Output Connection: Attach Pin 9, the output pin, to either the following step in the sequence or an LED to indicate the condition.

4. Decoupling Capacitor:

- Noise Reduction: Place a decoupling capacitor close to the VCC and GND pins to minimize power supply noise.

Circuit Design Considerations:

When designing a circuit with the NE556DR, consider the following:

1. Stable Power Supply: Ensure that the power supply is stable and clean to prevent timing inaccuracies due to voltage fluctuations.

2. Component Selection: Carefully select the resistors (R1, R2) and capacitors (C1, C2) to achieve the desired timing intervals. The timing interval can be calculated based on the formula T = 1.1 * R * C.

3. Decoupling for Noise Suppression: Implement proper decoupling techniques to minimize noise, especially if the circuit is part of a larger system with potential interference.

4. Output Load: Consider the current driving capability of the NE556DR and ensure that the connected load does not exceed the maximum output current specifications.

In conclusion, the NE556DR is a versatile and reliable component for creating precise timing and sequential circuits. A thorough understanding of its operation, combined with careful circuit design and component selection, is crucial for leveraging its capabilities in a wide range of applications.

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6. What is the process for return or replacement of NE556DR?

All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the NE556DR we delivered, we will accept the replacement or return of the NE556DR only when all of the below conditions are fulfilled:

(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

(2)We are informed of the defect described above within 90 days after the delivery of NE556DR.

(3)The PartNo is unused and only in the original unpacked packaging.

Two processes to return the products:

(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations