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Name: NA555DR
Brand: Texas Instruments
SKU: NA555DR
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 NA555DR

Part No.:: NA555DR

Manufacturer:: Texas Instruments

Package:: 8-SOIC (0.154, 3.90mm Width)

Datasheet:: NA555DR.pdf

Description:: IC OSC SGL TIMER 100KHZ 8-SOIC

In Stock:: 162268

Quantity:: Add To Cart

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NA555DR Typical application Circuitry

NA555DR

The NA555DR is a highly versatile and widely used integrated circuit known as a timer or oscillator. It's capable of producing precise time delays or oscillation and is commonly used in a variety of electronic applications, such as pulse generation, LED blinking, tone generation, precision timing, and sequential timing.

Application Scenario: Pulse Width Modulation (PWM) for Motor Control

A typical application of the NA555DR is in generating PWM signals for controlling the speed of a DC motor. In this scenario, the NA555DR is used to generate a variable duty cycle square wave that controls the power supplied to the motor.

Features of Parameters

The following attributes define the NA555DR:

-Wide Operating Voltage Range: appropriate for a wide range of power sources.- High Output Current Capability: Can drive different types of loads.

- Adjustable Duty Cycle: Provides versatility in controlling different parameters of the output signal.

Circuit Connection Detail

Implementing the NA555DR in a PWM motor control circuit involves detailed attention to the following pin connections:

1. Ground (Pin 1): Connect this pin directly to the system ground. A stable ground connection is vital for the operation of the NA555DR.

2. Trigger (Pin 2): Connect this pin to the threshold point where the timer's output changes state. In PWM applications, this pin is typically connected in a feedback loop from the output to control the duty cycle.

3. Output (Pin 3): This pin provides the generated PWM signal. Connect this pin to the control gate of a power transistor or MOSFET that drives the motor.

4. Reset (Pin 4): Connect this pin to a positive voltage if not used. If used, it can be connected to another control element for turning the timer on and off.

5. Control Voltage (Pin 5): This pin is usually connected to a capacitor to stabilize the control voltage. In some applications, it can be used to modulate the PWM signal.

6. Threshold (Pin 6): In PWM applications, this pin is typically connected to a timing capacitor that sets the frequency of the output waveform.

7. Discharge (Pin 7): Connect this pin to the timing capacitor. It discharges the capacitor in each cycle of the output waveform.

8. VCC (Pin 8): Attach this pin to the supply voltage that is positive. Make that the voltage for the NA555DR is within the stated range.

Design Considerations

When designing a circuit with the NA555DR, it's important to consider the following aspects:

- Stable Power Supply: Variations in the power supply can affect the performance of the NA555DR. Decoupling capacitors can be used to minimize power supply noise.

- Heat Dissipation: If the NA555DR is driving a high-current load, ensure proper heat dissipation to prevent the chip from overheating.

- Component Selection: The timing capacitor and resistors should be chosen accurately to produce the desired frequency and duty cycle for the PWM signal.

In conclusion, the NA555DR is a versatile and efficient timer IC, ideal for applications requiring precise timing or oscillation, such as PWM for motor control. A carefully designed circuit, considering power supply stability, heat dissipation, and accurate component selection, is crucial to fully harness the capabilities of the NA555DR.

NA555DR information

NA555DR Specifications

Package/Case:
8-SOIC (0.154, 3.90mm Width)
Packaging:
Tape & Reel (TR),Cut Tape (CT),Digi-Reel®
Series:
-
ProductStatus:
Active
Type:
555 Type, Timer/Oscillator (Single)
Count:
-
Frequency:
100kHz
Voltage-Supply:
4.5V ~ 16V
Current-Supply:
10 mA
OperatingTemperature:
-40°C ~ 105°C

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6. What is the process for return or replacement of NA555DR?

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 NA555DR we delivered, we will accept the replacement or return of the NA555DR 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 NA555DR.

(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