規格
| 屬性 | 價值 |
| Package / Case | Tape & Reel (TR),Cut Tape (CT),Bulk |
| Part Status | Not For New Designs |
| 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-VSSOP |
概述
Description
The LMC555CMM 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 include:
- Low power draw (µA range)
- High output drive capability
- Rail-to-rail operation
- Small 8-pin VSSOP package
Applications include oscillators, timers, pulse generation, and delay circuits. The LMC555CMM is ideal for portable electronics, IoT devices, and energy-efficient systems where power efficiency is critical.
Its CMOS design reduces supply current spikes, improving stability compared to bipolar 555 variants. The CMM suffix denotes the VSSOP package, making it suitable for space-constrained designs.
For detailed specs, refer to the Texas Instruments datasheet.
Key features include:
- Low power draw (µA range)
- High output drive capability
- Rail-to-rail operation
- Small 8-pin VSSOP package
Applications include oscillators, timers, pulse generation, and delay circuits. The LMC555CMM is ideal for portable electronics, IoT devices, and energy-efficient systems where power efficiency is critical.
Its CMOS design reduces supply current spikes, improving stability compared to bipolar 555 variants. The CMM suffix denotes the VSSOP package, making it suitable for space-constrained designs.
For detailed specs, refer to the Texas Instruments datasheet.
Equivalent
The LMC555CMM (a CMOS version of the 555 timer) has several equivalents, including:
- TLC555 (Texas Instruments)
- ICM7555 (Maxim Integrated/Renesas)
- TS555 (STMicroelectronics)
- NA555 (Texas Instruments, standard bipolar version)
These are drop-in replacements with similar functionality, though some may vary in power consumption or voltage range. For exact compatibility, check datasheets.
- TLC555 (Texas Instruments)
- ICM7555 (Maxim Integrated/Renesas)
- TS555 (STMicroelectronics)
- NA555 (Texas Instruments, standard bipolar version)
These are drop-in replacements with similar functionality, though some may vary in power consumption or voltage range. For exact compatibility, check datasheets.
Pinout
The LMC555CMM is a CMOS version of the classic 555 timer IC, packaged in an 8-pin VSSOP. Its pin functions are as follows:
1. GND – Ground
2. TRIG – Trigger input (starts timing when ≤⅓ VCC)
3. OUT – Timer output
4. RESET – Active-low reset (disables timing when low)
5. CONT – Control voltage (bypass with capacitor for stability)
6. THRES – Threshold input (ends timing when ≥⅔ VCC)
7. DISCH – Open-drain discharge (connects to ground during output low)
8. VCC – Supply voltage (1.5V to 15V for LMC555)
It operates similarly to the standard 555 but with lower power consumption and improved performance in CMOS technology.
1. GND – Ground
2. TRIG – Trigger input (starts timing when ≤⅓ VCC)
3. OUT – Timer output
4. RESET – Active-low reset (disables timing when low)
5. CONT – Control voltage (bypass with capacitor for stability)
6. THRES – Threshold input (ends timing when ≥⅔ VCC)
7. DISCH – Open-drain discharge (connects to ground during output low)
8. VCC – Supply voltage (1.5V to 15V for LMC555)
It operates similarly to the standard 555 but with lower power consumption and improved performance in CMOS technology.
Application
The LMC555CMM, a CMOS version of the classic 555 timer, is widely used in:
- Timing circuits: Precision delays, pulse generation.
- Oscillators: Square wave generation for clocks and signals.
- PWM control: Motor speed regulation, LED dimming.
- Sensor interfaces: Triggering and signal conditioning.
- Consumer electronics: Toys, timers, alarms.
- Industrial systems: Automation and control circuits.
Its low power consumption, wide voltage range (1.5V–15V), and small footprint (SOIC package) make it ideal for portable and battery-operated devices.
- Timing circuits: Precision delays, pulse generation.
- Oscillators: Square wave generation for clocks and signals.
- PWM control: Motor speed regulation, LED dimming.
- Sensor interfaces: Triggering and signal conditioning.
- Consumer electronics: Toys, timers, alarms.
- Industrial systems: Automation and control circuits.
Its low power consumption, wide voltage range (1.5V–15V), and small footprint (SOIC package) make it ideal for portable and battery-operated devices.
