KA555D

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KA555D

+BOM

IC OSC SINGLE TIMER 8-SOP

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Specifications

Attribute Value
Supplier onsemi
Package Tube
ProductStatus Obsolete
Type 555 Type, Timer/Oscillator (Single)
Voltage-Supply 4.5V ~ 16V
Current-Supply 7.5 mA
OperatingTemperature 0°C ~ 70°C
Package/Case 8-SOIC (0.154, 3.90mm Width)
SupplierDevicePackage 8-SOIC

Overview

Description

The KA555D is a precision timer device widely used in electronic circuits for generating precise time delays or oscillations. It is an adaptation of the classic 555 timer, packaged in a small-outline integrated circuit (SOIC) form for compact applications. The device operates in three primary modes: monostable, astable, and bistable, allowing it to be used in various applications, including timers, pulse generation, and oscillators.
Monostable mode enables the KA555D to produce a single output pulse of a set duration in response to an input trigger. In astable mode, the timer functions as an oscillator, continuously generating a square wave output with a frequency determined by external resistors and capacitors. The bistable mode, or flip-flop mode, allows the device to toggle its output state based on input triggers.
The KA555D is valued for its reliability, low cost, and ease of use, making it ideal for hobbyists and professionals alike in timing and pulse generation applications. Its compact size and wide operating voltage range further enhance its versatility in various electronic projects.

Equivalent

The KA555D is a variant of the 555 timer IC. Equivalent products include the NE555, LM555, SE555, and TLC555. These ICs are commonly used for timing applications, pulse generation, and oscillators, and they share similar pin configurations and functionalities. Always check the datasheet for specific electrical characteristics and package type to ensure compatibility with your application.

Features

The KA555D is a precision timer IC, commonly used in timing and pulse generation applications. Key features include:
1. Operating Voltage: It typically operates between 4.5V and 16V, making it versatile for different circuits.

2. Timing Precision: The KA555D provides stable time delays and oscillations, with precise control over timing intervals.
3. Output Types: It offers both monostable and astable modes, allowing for single or continuous pulse generation.
4. Current Output: The IC can source or sink up to 200mA of load current, suitable for driving LEDs, relays, and other components.
5. Temperature Stability: It has good temperature stability, ensuring consistent performance across a range of environmental conditions.
6. Low Power Consumption: The device consumes minimal power, enhancing efficiency in battery-powered applications.
7. Adjustable Duty Cycle: The duty cycle can be modified with external resistors and capacitors, providing flexibility in waveform generation.
These features make the KA555D a popular choice for timing solutions in electronic projects and applications.

Pinout

The KA555D is a precision timer IC, similar to the popular NE555 timer. It is commonly used for generating time delays, oscillation, and as a flip-flop element in electronic circuits. The KA555D is typically housed in an 8-pin Dual In-line Package (DIP).
Here is a concise description of its pin functions:
1. GND (Pin 1): Ground reference voltage, typically connected to 0V.
2. Trigger (Pin 2): Input for triggering the timer; a falling edge on this pin starts the timing interval.
3. Output (Pin 3): The output of the timer. This pin will supply or sink current depending on the timer's mode.
4. Reset (Pin 4): Resets the timer when a low voltage is applied. If not used, it should be connected to VCC.
5. Control Voltage (Pin 5): Allows setting a different threshold voltage; often connected to a capacitor for timing control.
6. Threshold (Pin 6): Compares the voltage applied to it with a reference voltage; used to reset the flip-flop.
7. Discharge (Pin 7): Open collector output; discharges a capacitor between intervals.
8. VCC (Pin 8): Supply voltage, typically between 4.5V and 16V.
The KA555D operates in three modes – monostable, astable, and bistable, based on external components connected to it.

Manufacturer

The KA555D is manufactured by Fairchild Semiconductor, which is a company that specializes in the production of semiconductors. Fairchild was a well-known and pioneering company in the semiconductor industry, contributing significantly to its development. It was originally founded in 1957 and became famous for its role in the creation of silicon transistors and integrated circuits. Fairchild Semiconductor has been involved in the design, manufacturing, and supply of a wide range of semiconductor products used in various applications, including consumer electronics, automotive, industrial, and computing.
In 2016, Fairchild Semiconductor was acquired by ON Semiconductor (now known as onsemi), a company that continues to focus on semiconductor solutions. onsemi offers a diverse portfolio of products including power and signal management, logic, discrete, and custom devices for a variety of applications and industries, emphasizing energy-efficient solutions.
The KA555D itself is a variant of the 555 timer IC, which is widely used in electronic circuits for applications such as timers, pulse generation, and oscillator functions.

Application

The KA555D is a timer IC commonly used in various electronic applications. Its primary application areas include:
1. Timing Circuits: Used for generating precise time delays.
2. Oscillator Circuits: Functions as a square wave oscillator for frequency generation.
3. Pulse Width Modulation (PWM) Controllers: Employed in controlling power delivery.
4. Sequential Timers: Utilized in creating sequences of events.
5. Frequency Dividers: Helps in dividing frequency in digital circuits.
6. Tone Generation: Used in audio and sound applications for generating tones.
7. LED and Light Flashers: Controls the on-off timing of LEDs.
8. Schmitt Trigger: Utilized in converting noisy signals into clean digital signals.
These features make it versatile in both analog and digital circuits.

Package

The KA555D is typically available in an 8-pin Small Outline Integrated Circuit (SOIC) package. This surface-mount package is compact, making it suitable for applications where space is limited.