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NE555V
+物料清單IC OSC SINGLE TIMER 100KHZ 8DIP
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製造商德州儀器
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製造商部分 #NE555V
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數據表 NE555V DataSheet
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規格
| 屬性 | 價值 |
| Supplier | Texas Instruments |
| 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 |
概述
Description
This IC consists of two voltage comparators, a flip-flop, a discharge transistor, and a resistive divider network. It operates by charging and discharging a capacitor to generate precise time delays or oscillations. In astable mode, it outputs square waves, while in monostable mode, it creates a single pulse when triggered.
The 555 timer is prized for its simplicity, reliability, and ease of use, making it a staple in projects ranging from simple DIY circuits to complex industrial applications. Its adaptability allows it to function in timing, pulse generation, and waveform shaping tasks.
Equivalent
Features
1. Wide Supply Voltage Range: Operates from 4.5V to 16V, allowing flexibility in different electronic projects.
2. Timing Range: Capable of generating time delays from microseconds to hours by selecting appropriate resistor and capacitor values.
3. Adjustable Duty Cycle: Supports both monostable and astable modes, providing adjustable frequency and duty cycle outputs.
4. Output Compatibility: Delivers output currents up to 200 mA, suitable for driving various loads.
5. Temperature Stability: Offers stable operation across a wide temperature range, ensuring reliable performance.
6. Ease of Use: Simple design with few external components needed, making it easy to implement in circuits.
7. High Reliability: Features low power consumption with a low standby current, enhancing efficiency and longevity.
These features make the NE555V a popular choice for hobbyists and engineers working on timing and control applications.
Pinout
Here's a brief description of each pin:
1. Ground (GND): Pin 1 is connected to the ground (0V).
2. Trigger (TRIG): Pin 2 is the negative input to a comparator that starts the timing interval when it falls below 1/3 of the supply voltage.
3. Output (OUT): Pin 3 provides the output signal, which can be high or low, depending on the timer's state.
4. Reset (RESET): Pin 4 is used to reset the timer; it is active low and usually connected to VCC if not in use.
5. Control Voltage (CTRL): Pin 5 allows the modification of the threshold voltage, typically connected to a capacitor or left open.
6. Threshold (THRESH): Pin 6 is the positive input to a comparator that resets the flip-flop when it exceeds 2/3 of the supply voltage.
7. Discharge (DISCH): Pin 7 discharges the timing capacitor to ground when the output is low.
8. Supply Voltage (VCC): Pin 8 is connected to the positive supply voltage, typically between 4.5V and 15V.
Manufacturer
Additionally, other companies such as STMicroelectronics, NXP Semiconductors, and ON Semiconductor have also produced their own versions or equivalents of the 555 timer IC. Each of these companies operates in the semiconductor industry, focusing on various segments of the electronics market, including consumer electronics, automotive, industrial, and communications.
The 555 timer IC, including the NE555V version, is widely used due to its versatility and reliability in timing and oscillator applications. It has been a staple in electronics projects and professional applications since its introduction, thanks to its simplicity and low cost.
Application
1. Timers: Used for creating precise time delays or oscillations.
2. Pulse Generation: Ideal for generating single or repetitive pulse waveforms.
3. Oscillators: Employed in signal generation circuits, such as square wave oscillators.
4. Multivibrators: Functions as monostable, astable, and bistable multivibrators.
5. Frequency Division: Utilized in dividing frequency for clocks and signal processing.
6. PWM Generation: Used in Pulse Width Modulation (PWM) for motor speed control and LED dimming.
7. Tone Generation: Applied in creating audio tones for alarms and sound effects.
The NE555V is favored for its simplicity, reliability, and low cost.