LM555CMM

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LM555CMM

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LM555 HIGHLY STABLE 555 TIMER

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Thông số kỹ thuật

thuộc tính Giá trị
Package Bulk
ProductStatus Active
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-TSSOP, 8-MSOP (0.118, 3.00mm Width)
SupplierDevicePackage 8-VSSOP

Tổng quan

Description

The LM555CMM is a CMOS version of the classic 555 timer IC, designed by Texas Instruments. It offers low power consumption, high precision, and wide operating voltage (2V to 18V).
### Key Features:
- Monostable & Astable Operation – Generates precise time delays or oscillations.
- Low Power – Consumes less current than the standard 555.
- Small Package – Comes in an 8-pin VSSOP (CMM) for space-constrained designs.
- Improved Performance – Reduced supply current spikes and better frequency stability.
### Applications:
- Pulse generation
- LED flashers
- Oscillators
- Timers & delays
The LM555CMM is ideal for battery-powered and portable electronics due to its efficiency and compact size.
Would you like a datasheet or circuit examples?

Equivalent

The LM555CMM is a CMOS version of the classic 555 timer. Equivalent alternatives include:
- TLC555 (Texas Instruments) – Low-power CMOS version.
- ICM7555 (Maxim/Texas Instruments) – CMOS-based, low power.
- NE555 (TI/STMicroelectronics) – Standard bipolar version (higher power).
- LMC555 (TI) – CMOS, wider voltage range.
- TS555 (STMicroelectronics) – Low-power CMOS.
For drop-in replacements, check pin compatibility and voltage/power requirements. CMOS versions (e.g., TLC555, ICM7555) are preferred for low-power apps.

Features

The LM555CMM is a CMOS version of the classic 555 timer IC, offering improved performance in a small 8-pin VSSOP package. Key features:
- Low Power Consumption: CMOS design reduces power usage compared to bipolar versions.
- Wide Supply Range: Operates from 2V to 18V, suitable for battery-powered applications.
- High Accuracy: Stable timing with low drift over temperature.
- Fast Reset: Quick response to reset signals.
- Low Trigger/Threshold Current: Compatible with high-impedance control circuits.
- Output Sink/Source Capability: Up to 100mA, driving TTL/CMOS loads.
- Astable/Monostable Modes: Flexible for pulse generation, delays, or oscillation.
- Small Footprint: Ideal for space-constrained designs.
Common uses: timers, PWM, tone generation, and sequential timing. The CMOS version minimizes power while retaining 555 functionality.

Pinout

The LM555CMM is a 8-pin SOIC (Small Outline Integrated Circuit) version of the classic 555 timer IC. Its pin functions are as follows:
1. GND – Ground (0V reference).
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. CTRL – Control voltage (modulates threshold).
6. THR – Threshold input (ends timing when >2/3 Vcc).
7. DIS – Discharge (connects to ground during discharge phase).
8. VCC – Positive supply voltage (4.5V–16V).
The LM555CMM operates in monostable (one-shot) or astable (oscillator) modes, commonly used for timing, pulse generation, and delay circuits. Its compact SOIC-8 package makes it suitable for space-constrained designs.

Application

The LM555CMM is a versatile timer IC used in various applications, including:
1. Timers & Delays – Precision timing circuits.
2. Oscillators – Generating clock pulses (astable mode).
3. Pulse Generation – Creating PWM signals.
4. LED Flashers – Blinking lights.
5. Motor Control – Speed regulation.
6. Switch Debouncing – Cleaning noisy signals.
7. Voltage-Controlled Oscillators (VCOs) – Frequency modulation.
8. Alarms & Sensors – Triggering events.
Its low cost, reliability, and ease of use make it popular in consumer electronics, automotive systems, and industrial controls.

Package

The LM555CMM is available in an 8-pin VSSOP (Mini Small Outline Package). This surface-mount package is compact, measuring approximately 3mm x 3mm, making it suitable for space-constrained applications. The "MM" suffix denotes the VSSOP variant, while "C" indicates the commercial temperature range (0°C to 70°C). It’s a smaller alternative to the traditional 8-pin DIP or SOIC packages.

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