仕様
| 属性 | 値 |
| Package / Case | Tape & Reel (TR),Cut Tape (CT) |
| Part Status | Active |
| Type | 555 Type, Timer/Oscillator (Single) |
| Frequency | 3MHz |
| Voltage - Supply | 1.5V ~ 15V |
| Supply Current | 150 µA |
| Operating Temperature | -40°C ~ 85°C |
| Supplier Device Package | 8-SOIC |
概要
Description
The LMC555CMX/NOPB is a low-power CMOS version of the classic 555 timer IC, designed by Texas Instruments. It offers similar functionality to the standard 555 but with lower power consumption, wider voltage range (1.5V to 15V), and improved performance in battery-operated and precision timing applications.
Key features:
- Low power consumption (ideal for portable devices).
- High output drive capability (up to 50mA).
- Improved timing accuracy compared to bipolar 555 timers.
- Compatible with standard 555 pinouts for easy replacement.
Applications include oscillators, timers, pulse generation, and delay circuits. The NOPB suffix indicates it is lead-free (RoHS compliant).
This IC is a versatile, energy-efficient alternative to traditional 555 timers, suitable for modern low-voltage designs.
Key features:
- Low power consumption (ideal for portable devices).
- High output drive capability (up to 50mA).
- Improved timing accuracy compared to bipolar 555 timers.
- Compatible with standard 555 pinouts for easy replacement.
Applications include oscillators, timers, pulse generation, and delay circuits. The NOPB suffix indicates it is lead-free (RoHS compliant).
This IC is a versatile, energy-efficient alternative to traditional 555 timers, suitable for modern low-voltage designs.
Equivalent
The LMC555CMX/NOPB is a CMOS version of the 555 timer. Equivalent alternatives include:
- TS555 (STMicroelectronics)
- ICM7555 (Maxim Integrated/Renesas)
- TLC555 (Texas Instruments)
- NA555 (Texas Instruments, standard 555 but widely compatible)
These offer similar functionality, though specifications like voltage range, power consumption, and speed may vary slightly. Check datasheets for exact compatibility.
- TS555 (STMicroelectronics)
- ICM7555 (Maxim Integrated/Renesas)
- TLC555 (Texas Instruments)
- NA555 (Texas Instruments, standard 555 but widely compatible)
These offer similar functionality, though specifications like voltage range, power consumption, and speed may vary slightly. Check datasheets for exact compatibility.
Pinout
The LMC555CMX/NOPB is a CMOS version of the classic 555 timer IC, packaged in an 8-pin SOIC.
Pin Functions:
1. GND – Ground
2. TRIG – Trigger input (starts timing when < 1/3 VCC)
3. OUT – Timer output (high/low based on state)
4. RESET – Active-low reset (halts timing when low)
5. CONT – Control voltage (bypass with capacitor for stability)
6. THRES – Threshold input (ends timing when > 2/3 VCC)
7. DISCH – Discharge (connects to ground during discharge phase)
8. VCC – Power supply (1.5V to 15V)
This low-power variant operates similarly to the standard 555 but with improved performance in CMOS technology.
Pin Functions:
1. GND – Ground
2. TRIG – Trigger input (starts timing when < 1/3 VCC)
3. OUT – Timer output (high/low based on state)
4. RESET – Active-low reset (halts timing when low)
5. CONT – Control voltage (bypass with capacitor for stability)
6. THRES – Threshold input (ends timing when > 2/3 VCC)
7. DISCH – Discharge (connects to ground during discharge phase)
8. VCC – Power supply (1.5V to 15V)
This low-power variant operates similarly to the standard 555 but with improved performance in CMOS technology.
Manufacturer
The LMC555CMX/NOPB is manufactured by Texas Instruments (TI), a leading American semiconductor company. TI specializes in designing and producing analog and embedded processing chips for various industries, including automotive, industrial, and consumer electronics. Known for innovation and reliability, TI is a major player in the global electronics market.
Application
The LMC555CMX/NOPB, a low-power CMOS version of the 555 timer, is widely used in:
- Timing circuits: Precision timing, pulse generation, and delays.
- Oscillators: Square wave and clock signal generation.
- PWM control: Motor speed and LED dimming.
- Sensor interfaces: Signal conditioning for light, temperature, or proximity sensors.
- Consumer electronics: Toys, alarms, and timers.
- Industrial systems: Automation and process control.
Its low power consumption and wide voltage range (1.5V–15V) make it suitable for battery-operated and portable devices.
- Timing circuits: Precision timing, pulse generation, and delays.
- Oscillators: Square wave and clock signal generation.
- PWM control: Motor speed and LED dimming.
- Sensor interfaces: Signal conditioning for light, temperature, or proximity sensors.
- Consumer electronics: Toys, alarms, and timers.
- Industrial systems: Automation and process control.
Its low power consumption and wide voltage range (1.5V–15V) make it suitable for battery-operated and portable devices.
Package
The LMC555CMX/NOPB is available in an SOIC-8 package. This surface-mount package is compact and suitable for automated assembly processes. It has 8 pins and is commonly used in low-power, precision timing applications. The "NOPB" suffix indicates it is lead-free (RoHS compliant).
