Overview
The LM555CMX/NOPB is a highly stable timer IC produced by Texas Instruments. It is widely used for generating accurate time delays or oscillations and is a direct replacement for the SE555/NE555 timers. This device is available in an 8-pin SOIC package and is known for its versatility in various timing applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Manufacturer | Texas Instruments | |
| Package Type | SOIC-8 | |
| Supply Voltage | 4.5 to 16 | V |
| Supply Current (VCC = 5 V, RL = ∞) | 3 to 6 | mA |
| Supply Current (VCC = 15 V, RL = ∞) | 10 to 15 | mA |
| Output Current | Up to 200 | mA |
| Operating Temperature | 0 to 70 | °C |
| Storage Temperature | -65 to 150 | °C |
| Junction-to-Ambient Thermal Resistance | 170 | °C/W |
Key Features
- High Stability: The LM555CMX/NOPB is known for its high stability in generating time delays or oscillations.
- Direct Replacement: It is a direct replacement for SE555/NE555 timers, making it pin-to-pin compatible without requiring schematic or layout changes.
- Operating Modes: The device can operate in both astable (free-running) and monostable modes.
- Adjustable Duty Cycle: The duty cycle of the output pulse can be adjusted using external resistors and capacitors.
- Trigger and Reset: Additional terminals are provided for triggering or resetting the timer if desired.
- Output Compatibility: The output can source or sink up to 200 mA and is TTL compatible.
- Temperature Stability: The device has a temperature stability better than 0.005% per °C.
Applications
- Precision Timing: Used in applications requiring precise time delays or oscillations.
- Pulse Generation: Generates pulses for various timing needs.
- Sequential Timing: Used in sequential timing circuits.
- Time Delay Generation: Generates time delays ranging from microseconds to hours.
- Pulse Width Modulation (PWM): Can be used in PWM applications.
- Pulse Position Modulation (PPM): Used in PPM applications.
- Linear Ramp Generator: Can be configured as a linear ramp generator.
Q & A
- What is the LM555CMX/NOPB used for?
The LM555CMX/NOPB is used for generating accurate time delays or oscillations and is a direct replacement for SE555/NE555 timers.
- What are the operating modes of the LM555CMX/NOPB?
The device can operate in both astable (free-running) and monostable modes.
- What is the supply voltage range for the LM555CMX/NOPB?
The supply voltage range is from 4.5 V to 16 V.
- How much current can the output of the LM555CMX/NOPB source or sink?
The output can source or sink up to 200 mA.
- Is the LM555CMX/NOPB TTL compatible?
- What is the temperature stability of the LM555CMX/NOPB?
The temperature stability is better than 0.005% per °C.
- What package types are available for the LM555CMX/NOPB?
The device is available in an 8-pin SOIC package.
- Can the LM555CMX/NOPB be triggered and reset?
- What are some common applications of the LM555CMX/NOPB?
Common applications include precision timing, pulse generation, sequential timing, time delay generation, PWM, PPM, and linear ramp generation.
- What is the storage temperature range for the LM555CMX/NOPB?
The storage temperature range is from -65°C to 150°C.
