Thông số kỹ thuật
| thuộc tính | Giá trị |
| 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 |
Tổng quan
Description
The NE555D is a timer IC widely used in electronics for generating precise time delays or oscillation. It belongs to the 555 timer family, which is known for its versatility, ease of use, and reliability. Housed in an 8-pin SOIC package, the NE555D operates in three main modes: monostable, astable, and bistable.
In monostable mode, the NE555D generates a single pulse of a specific duration in response to a trigger signal. In astable mode, it operates as an oscillator, producing a continuous square wave output, useful for clock pulses or LED flashes. In bistable mode, it functions as a basic flip-flop or latch.
The device operates with a supply voltage ranging from 4.5V to 15V, offering flexibility for various applications. It features a low power consumption and high output drive capability, allowing it to control a wide range of loads. The NE555D is popular in both hobbyist and professional circuits due to its simplicity and adaptability across numerous electronic projects.
In monostable mode, the NE555D generates a single pulse of a specific duration in response to a trigger signal. In astable mode, it operates as an oscillator, producing a continuous square wave output, useful for clock pulses or LED flashes. In bistable mode, it functions as a basic flip-flop or latch.
The device operates with a supply voltage ranging from 4.5V to 15V, offering flexibility for various applications. It features a low power consumption and high output drive capability, allowing it to control a wide range of loads. The NE555D is popular in both hobbyist and professional circuits due to its simplicity and adaptability across numerous electronic projects.
Equivalent
The NE555D is a variant of the 555 timer IC. Equivalent products include the LM555, SE555, and the TLC555, which offer similar functionalities. These ICs are used for timing applications, such as oscillation and pulse generation. Ensure the compatibility of electrical specifications like supply voltage and temperature range for specific applications when choosing an equivalent.
Features
The NE555D is a highly stable timer integrated circuit commonly used for generating precise time delays and oscillation. Key features include:
1. Timing from Microseconds to Hours: Offers adjustable time delays ranging from microseconds to several hours.
2. Astable and Monostable Operation: Can function in both astable (oscillator) and monostable (timer) modes.
3. Wide Supply Voltage Range: Operates on a voltage range from 4.5V to 15V, suitable for TTL and CMOS logic levels.
4. High Output Drive Capability: Can source or sink up to 200 mA of output current, capable of driving TTL loads.
5. Low Power Consumption: Consumes minimal power in idle states.
6. Temperature Stability: Provides reliable performance over a wide temperature range.
7. Adjustable Duty Cycle: Allows the duty cycle to be set with external resistors and capacitors.
8. Simple to Use: Requires few external components, making it easy to integrate into various circuits.
9. Available in DIP-8 and SOIC-8 Packages: Offers flexibility in design and application.
These features make the NE555D versatile for applications in timing, pulse generation, and oscillator functions.
1. Timing from Microseconds to Hours: Offers adjustable time delays ranging from microseconds to several hours.
2. Astable and Monostable Operation: Can function in both astable (oscillator) and monostable (timer) modes.
3. Wide Supply Voltage Range: Operates on a voltage range from 4.5V to 15V, suitable for TTL and CMOS logic levels.
4. High Output Drive Capability: Can source or sink up to 200 mA of output current, capable of driving TTL loads.
5. Low Power Consumption: Consumes minimal power in idle states.
6. Temperature Stability: Provides reliable performance over a wide temperature range.
7. Adjustable Duty Cycle: Allows the duty cycle to be set with external resistors and capacitors.
8. Simple to Use: Requires few external components, making it easy to integrate into various circuits.
9. Available in DIP-8 and SOIC-8 Packages: Offers flexibility in design and application.
These features make the NE555D versatile for applications in timing, pulse generation, and oscillator functions.
Pinout
The NE555D is an 8-pin integrated circuit used for timing applications. Here is a brief overview of its pin count and functions:
1. Pin 1 (GND): Ground reference voltage.
2. Pin 2 (Trigger): Activates the timer when the voltage falls below 1/3 of the supply voltage.
3. Pin 3 (Output): Outputs the signal; it can either source or sink current.
4. Pin 4 (Reset): Resets the timer; active low. Connect to VCC if not used.
5. Pin 5 (Control Voltage): Allows changing the threshold voltage; typically connected to a capacitor if unused.
6. Pin 6 (Threshold): Resets the flip-flop when the voltage exceeds 2/3 of the supply voltage.
7. Pin 7 (Discharge): Discharges the timing capacitor to ground.
8. Pin 8 (VCC): Supply voltage, typically between 4.5V and 15V.
The NE555D can operate in monostable, astable, and bistable modes, making it versatile for various timing and oscillator applications.
1. Pin 1 (GND): Ground reference voltage.
2. Pin 2 (Trigger): Activates the timer when the voltage falls below 1/3 of the supply voltage.
3. Pin 3 (Output): Outputs the signal; it can either source or sink current.
4. Pin 4 (Reset): Resets the timer; active low. Connect to VCC if not used.
5. Pin 5 (Control Voltage): Allows changing the threshold voltage; typically connected to a capacitor if unused.
6. Pin 6 (Threshold): Resets the flip-flop when the voltage exceeds 2/3 of the supply voltage.
7. Pin 7 (Discharge): Discharges the timing capacitor to ground.
8. Pin 8 (VCC): Supply voltage, typically between 4.5V and 15V.
The NE555D can operate in monostable, astable, and bistable modes, making it versatile for various timing and oscillator applications.
Manufacturer
The NE555D is a variant of the 555 timer IC, which is manufactured by several companies, including Texas Instruments (TI). Texas Instruments is a major American technology company that designs and manufactures semiconductors and integrated circuits. The company is one of the largest producers of analog and embedded processing chips and serves a wide range of industries, including automotive, industrial, consumer electronics, and communications. TI is known for its innovation in analog technology and its role in developing and advancing semiconductor solutions.
Application
The NE555D is a versatile timer IC used in various applications. It is commonly used for creating precise time delays and oscillators, making it ideal for generating clock pulses in digital circuits. It operates in monostable mode for pulse generation and in astable mode for continuous oscillation. Other applications include PWM (Pulse Width Modulation) for motor speed control, frequency division, tone generation in audio circuits, and LED flashers. Its simplicity and reliability make it popular in both hobbyist projects and professional designs, such as in alarms, timer circuits, and waveform generators.
Package
The NE555D is a variant of the 555 timer IC that comes in a Small Outline Integrated Circuit (SOIC) package. This package type is surface-mounted and typically has a smaller footprint compared to the traditional Dual In-line Package (DIP), making it suitable for applications requiring compact design.
