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Name: NE556DRE4
Brand: Texas Instruments
SKU: NE556DRE4
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 NE556DRE4

Part No.:: NE556DRE4

Manufacturer:: Texas Instruments

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

Datasheet:: NE556DRE4.pdf

Description:: IC OSC TIMER DUAL 100KHZ 14-SOIC

In Stock:: 3884

Quantity:: Add To Cart

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NE556DRE4 Specifications

Package/Case:
14-SOIC (0.154, 3.90mm Width)
Packaging:
Tape & Reel (TR)
Series:
-
ProductStatus:
Discontinued at Mosen
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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NE556DRE4 information

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NE556DRE4 Typical application Circuitry

NE556DRE4

The NE556DRE4 is an integrated circuit that can produce precise time delays or oscillations. It is a dual precision timer device. It's essentially two NE555 timers in a single package, offering more functionality while saving space. The NE556DRE4 is widely used in a variety of applications including pulse generation, timing, delay, sequential timing, and as a flip-flop element.

Characteristic Features:

- The NE556DRE4 contains two independent 555 timer circuits that can run in astable or monostable modes.

- It can be used in a variety of applications due to its broad range of supply voltages.

- The chip provides high output current capability, allowing it to drive TTL or relay loads directly.

Application Scenario & Detailed Circuit Integration:

Consider integrating the NE556DRE4 in a sequential timer circuit, where two separate timing events need to be controlled independently, such as in-home automation systems for controlling lights or motors.

1. Power Supply Connection: Connect a stable power source to the VCC pin (e.g., PIN 14) of the NE556DRE4. Ensure the power supply voltage is within the recommended range for the chip. Ground the GND pin (e.g., PIN 7).

2. First Timer Configuration (Monostable Operation): Connect a resistor between the VCC pin and the discharge pin (DISCH1, PIN 1) and a capacitor from the threshold pin (THRS1, PIN 2) to the ground. The NE556DRE4's first timer is now set to trigger on a negative input pulse at the trigger pin (TRIG1, PIN 6), producing a stable time delay defined by the resistor-capacitor (RC) pair.

3. Second Timer Configuration (Astable Operation): Set up the second timer for continuous oscillation by connecting two resistors and a capacitor. Connect the first resistor between VCC and the discharge pin (DISCH2, PIN 13), the second resistor between DISCH2 and the threshold pin (THRS2, PIN 12), and a capacitor from THRS2 to the ground. The control voltage pin (CV2, PIN 11) can be left open or used for modulating the oscillation frequency.

4. Output Utilization: Utilize the outputs of both timers (OUT1, PIN 5 and OUT2, PIN 9) to control your devices, such as lights or motors. Ensure the connected devices do not exceed the current rating of the NE556DRE4 outputs.

5. Decoupling Capacitor: Place a decoupling capacitor close to the VCC and GND pins of the NE556DRE4 to filter out noise and provide a stable operation.

Design Considerations:

When utilizing the NE556DRE4 in circuit design, take into account the following:

1. Stability of Power Supply: Make that the NE556DRE4's power supply is steady and operating within the suggested voltage range. Variations in voltage may have an impact on timing precision.

2. Component Selection for Timing: Choose the resistor and capacitor values for the RC networks carefully, based on the desired timing intervals. The timing accuracy is directly affected by these components' precision and stability.

3. Heat Dissipation: If the NE556DRE4 is expected to drive heavy loads, consider heat dissipation needs, as the chip may generate heat during operation.

4. Interference and Noise Mitigation: Incorporate filtering strategies to mitigate potential interference or noise, especially if the circuit is part of a larger system with various electronic components.

By carefully considering these points, the NE556DRE4 can be effectively integrated into a sequential timing application, providing reliable and precise control for various automated systems or processes.

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6. What is the process for return or replacement of NE556DRE4?

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 NE556DRE4 we delivered, we will accept the replacement or return of the NE556DRE4 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 NE556DRE4.

(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