LMC555CM

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LMC555CM

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IC OSC SINGLE TIMER 3MHZ 8-SOIC

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仕様

属性 値
Part Status Obsolete
Base Product Number LMC555
Type 555 Type, Timer/Oscillator (Single)
Frequency 3MHz
Voltage - Supply 1.5V ~ 15V
Current - Supply 150 µA
Operating Temperature -40°C ~ 85°C
Package 8-SOIC (0.154", 3.90mm Width)
Supplier Device Package 8-SOIC
Mounting Type Surface Mount
Packaging Tube

概要

Description

The LMC555CM is a low-power CMOS version of the classic 555 timer IC, manufactured by Texas Instruments. It offers similar functionality to the standard 555 but with lower power consumption, wider voltage range (1.5V–15V), and improved performance in battery-operated applications.
Key features:
- Precision timing (astable/monostable modes).
- Low supply current (~80µA typical at 5V).
- High output drive (up to 50mA).
- Rail-to-rail output swing.
Applications include oscillators, pulse generation, timers, and delay circuits. The CMOS design reduces power spikes, making it ideal for portable and energy-efficient devices.
Packaged in an 8-pin SOIC, it’s pin-compatible with the NE555 but with better efficiency.
For detailed specs, refer to the LMC555 datasheet.

Equivalent

The LMC555CM is a CMOS version of the classic 555 timer. Equivalent products include:
- TLC555 (Texas Instruments)
- ICM7555 (Maxim Integrated/Renesas)
- TS555 (STMicroelectronics)
- NA555 (Texas Instruments, standard 555 but similar functionality)
These are pin-compatible CMOS alternatives with low power consumption. For exact replacements, check datasheets for voltage/current specs.

Features

The LMC555CM is a CMOS version of the classic 555 timer, offering low-power operation and improved performance. Key features include:
- Low Power Consumption: Operates at a fraction of the power of bipolar 555 timers (e.g., 80 µA typical at 5V).
- Wide Supply Range: Works from 1.5V to 15V, making it versatile for battery-powered applications.
- High Output Drive: Sinks/sources up to 50 mA, compatible with TTL/CMOS.
- Low Threshold/Trigger Current: Reduces timing errors and improves accuracy.
- Improved Timing Stability: Less susceptible to supply voltage variations compared to bipolar versions.
- Pin-Compatible: Direct replacement for standard 555 timers (NE555, etc.).
- Low Input Bias Current: ~20 pA, minimizing leakage effects.
- ESD Protection: Enhanced robustness against electrostatic discharge.
Ideal for precision timing, pulse generation, and oscillator applications in portable and low-voltage systems.

Manufacturer

The LMC555CM is manufactured by Texas Instruments (TI), a leading American semiconductor company. TI specializes in designing and producing analog and embedded processing chips, widely used in electronics. Known for innovation, TI is a major player in the industry, offering components like the LMC555CM, a low-power CMOS version of the classic 555 timer IC. The company serves diverse markets, including industrial, automotive, and consumer electronics.

Application

The LMC555CM, a CMOS version of the classic 555 timer, is used in various applications due to its low power consumption and wide voltage range (1.5V–15V). Key areas include:
1. Timing Circuits – Precision delays, pulse generation.
2. Oscillators – Square/triangle wave generation.
3. LED Flashers & Blinkers – Automotive/indicator lights.
4. PWM Control – Motor speed/dimming circuits.
5. Sensors – Triggering alarms or timers.
6. Consumer Electronics – Toys, timers, and gadgets.
7. Battery-Powered Devices – Efficient operation in portable electronics.
Its small size, reliability, and versatility make it ideal for hobbyist projects and industrial designs.

Package

The LMC555CM is available in an SOIC-8 (Small Outline Integrated Circuit) package. This surface-mount package has 8 pins and is compact, making it suitable for space-constrained applications. It is a CMOS version of the classic 555 timer, offering low power consumption and compatibility with standard 555 timers. The SOIC-8 package is widely used in modern electronics.

Frequently Asked Questions


Q: What is the maximum frequency of the LMC555CM?
A: The LMC555CM can operate at a maximum frequency of 3MHz, suitable for precise timing applications.


Q: What voltage range does this timer support?
A: It supports a wide supply voltage range from 1.5V to 15V, offering flexibility for low-power designs.


Q: Is the LMC555CM a single or dual timer?
A: It is a single 555-type timer/oscillator, ideal for simple pulse generation or time delay circuits.


Q: What is the typical supply current consumption?
A: The typical supply current is only 150 μA, making it efficient for battery-powered devices.


Q: Can it operate in high-temperature environments?
A: Yes, its operating temperature range is -40°C to 85°C, ensuring reliable performance in industrial conditions.


Q: What package type is the LMC555CM available in?
A: It comes in an 8-SOIC surface-mount package, specifically the 8-SOIC (0.154", 3.90mm width).


Q: Is this part currently in production?
A: The part status is listed as Obsolete, so it may have limited availability or be replaced by newer alternatives.


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