仕様
| 属性 | 値 |
| Package | Tube |
| ProductStatus | Obsolete |
| Type | 555 Type, Timer/Oscillator (Single) |
| Frequency | 100kHz |
| Voltage-Supply | 4.5V ~ 16V |
| Current-Supply | 10 mA |
| OperatingTemperature | 0°C ~ 70°C |
| Package/Case | 8-DIP (0.300, 7.62mm) |
| SupplierDevicePackage | 8-PDIP |
概要
Description
The LM555CN is a popular timer integrated circuit (IC) used for generating precise time delays or oscillations. It is a variant of the 555 timer IC, which was first introduced by Signetics. The LM555CN operates in three main modes: monostable (one-shot mode), astable (free-running oscillator), and bistable (flip-flop). These modes allow it to perform various timing, pulse generation, and oscillator functions.
The IC operates with a supply voltage ranging from 4.5V to 15V, making it versatile for different applications. It provides output levels that can drive TTL (Transistor-Transistor Logic) circuits and offers a high output current capability.
The LM555CN is typically housed in an 8-pin dual in-line package (DIP), making it easy to use on breadboards and in prototyping. Essential components like resistors and capacitors are used externally to set the timing intervals. Its reliability, cost-effectiveness, and simplicity have made it a staple in educational, hobbyist, and industrial electronics projects.
The IC operates with a supply voltage ranging from 4.5V to 15V, making it versatile for different applications. It provides output levels that can drive TTL (Transistor-Transistor Logic) circuits and offers a high output current capability.
The LM555CN is typically housed in an 8-pin dual in-line package (DIP), making it easy to use on breadboards and in prototyping. Essential components like resistors and capacitors are used externally to set the timing intervals. Its reliability, cost-effectiveness, and simplicity have made it a staple in educational, hobbyist, and industrial electronics projects.
Equivalent
The LM555CN is a popular timer IC, and its equivalents include the NE555, SE555, and TLC555, among others. These versions are often interchangeable and can be used in similar applications like timers, pulse generation, and oscillators. The NE555 is a general-purpose equivalent, while the TLC555 offers lower power consumption. Always check the datasheets for any differences in electrical characteristics to ensure compatibility with your specific application.
Features
The LM555CN is a versatile timer IC used in various applications for generating precise timing and oscillation. Key features include:
1. Operating Voltage: It supports a wide range of supply voltages from 4.5V to 16V, making it suitable for both TTL and CMOS logic levels.
2. Timing Intervals: Capable of generating time delays from microseconds to hours, depending on the external resistor and capacitor values.
3. Modes: It operates in monostable (single-shot) and astable (oscillating) modes, providing flexibility for different timing applications.
4. Output: The output can drive TTL loads and source or sink up to 200 mA, which is useful for driving LEDs, relays, or other components.
5. Temperature Range: It operates effectively over a temperature range from 0°C to 70°C.
6. Low Power Consumption: The device has a low standby current, making it efficient for battery-powered applications.
7. Pin Configuration: It comes in an 8-pin DIP package, simplifying integration into circuits.
These features make the LM555CN a popular choice for applications like pulse generation, LED flashers, and timer circuits.
1. Operating Voltage: It supports a wide range of supply voltages from 4.5V to 16V, making it suitable for both TTL and CMOS logic levels.
2. Timing Intervals: Capable of generating time delays from microseconds to hours, depending on the external resistor and capacitor values.
3. Modes: It operates in monostable (single-shot) and astable (oscillating) modes, providing flexibility for different timing applications.
4. Output: The output can drive TTL loads and source or sink up to 200 mA, which is useful for driving LEDs, relays, or other components.
5. Temperature Range: It operates effectively over a temperature range from 0°C to 70°C.
6. Low Power Consumption: The device has a low standby current, making it efficient for battery-powered applications.
7. Pin Configuration: It comes in an 8-pin DIP package, simplifying integration into circuits.
These features make the LM555CN a popular choice for applications like pulse generation, LED flashers, and timer circuits.
Pinout
The LM555CN is an 8-pin DIP (Dual In-line Package) version of the 555 timer IC. Here are the pin functions:
1. Pin 1 (Ground/GND): Connected to the negative supply voltage.
2. Pin 2 (Trigger): Activates the timer when the voltage drops below 1/3 of the supply voltage.
3. Pin 3 (Output): Outputs the timer's signal, either high or low.
4. Pin 4 (Reset): Resets the timer when held low, but usually connected to the positive supply if not used.
5. Pin 5 (Control Voltage): Modifies the threshold voltage. Normally connected to ground via a capacitor for noise reduction.
6. Pin 6 (Threshold): Resets the flip-flop controlling the output when it exceeds 2/3 of the supply voltage.
7. Pin 7 (Discharge): Discharges the timing capacitor to ground when the output is low.
8. Pin 8 (VCC): Connected to the positive supply voltage, ranging typically from 4.5V to 15V.
The LM555CN can be used in various applications, such as monostable and astable multivibrators, due to its versatility and ease of implementation.
1. Pin 1 (Ground/GND): Connected to the negative supply voltage.
2. Pin 2 (Trigger): Activates the timer when the voltage drops below 1/3 of the supply voltage.
3. Pin 3 (Output): Outputs the timer's signal, either high or low.
4. Pin 4 (Reset): Resets the timer when held low, but usually connected to the positive supply if not used.
5. Pin 5 (Control Voltage): Modifies the threshold voltage. Normally connected to ground via a capacitor for noise reduction.
6. Pin 6 (Threshold): Resets the flip-flop controlling the output when it exceeds 2/3 of the supply voltage.
7. Pin 7 (Discharge): Discharges the timing capacitor to ground when the output is low.
8. Pin 8 (VCC): Connected to the positive supply voltage, ranging typically from 4.5V to 15V.
The LM555CN can be used in various applications, such as monostable and astable multivibrators, due to its versatility and ease of implementation.
Manufacturer
The LM555CN is a variant of the 555 timer IC, initially designed by Signetics, which was later acquired by Philips Semiconductors (now NXP Semiconductors). However, the 555 timer IC is manufactured by multiple semiconductor companies due to its popularity and widespread use. One of the prominent manufacturers of the LM555CN is Texas Instruments (TI), a global semiconductor design and manufacturing company. Texas Instruments is well-known for producing a wide range of analog and embedded processing products and is a leader in the semiconductor industry. The company supplies components for various applications, including industrial, automotive, personal electronics, and communications equipment.
Application
The LM555CN is a versatile timer IC widely used in various applications due to its reliability and ease of use. Common application areas include:
1. Timers: Used in time delay circuits, providing precise timing functions.
2. Oscillators: Functions as an astable oscillator for generating square waves.
3. Pulse Generation: Creates accurate pulse sequences for digital circuits.
4. Frequency Division: Utilized in frequency division applications.
5. PWM Generation: Used for Pulse Width Modulation in controlling motors or LED brightness.
6. Debouncing Switches: Helps eliminate noise from mechanical switches.
7. Tone Generation: Employed in audio applications to produce sound tones.
Its versatility makes it suitable for both hobbyist projects and industrial applications.
1. Timers: Used in time delay circuits, providing precise timing functions.
2. Oscillators: Functions as an astable oscillator for generating square waves.
3. Pulse Generation: Creates accurate pulse sequences for digital circuits.
4. Frequency Division: Utilized in frequency division applications.
5. PWM Generation: Used for Pulse Width Modulation in controlling motors or LED brightness.
6. Debouncing Switches: Helps eliminate noise from mechanical switches.
7. Tone Generation: Employed in audio applications to produce sound tones.
Its versatility makes it suitable for both hobbyist projects and industrial applications.
Package
The LM555CN is a timer IC typically housed in an 8-pin Dual In-line Package (DIP). This package format is popular for easy handling and prototyping on breadboards or through-hole circuits.
