LMC555CMX

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LMC555CMX

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LMC555 - 555 TIMER WITH LOW POWE

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Specifications

Attribute Value
Package Bulk
ProductStatus Active
Type 555 Type, Timer/Oscillator (Single)
Frequency 3MHz
Voltage-Supply 1.5V ~ 15V
Current-Supply 150 µA
OperatingTemperature -40°C ~ 85°C
Package/Case 8-SOIC (0.154, 3.90mm Width)
SupplierDevicePackage 8-SOIC

Overview

Description

The LMC555CMX 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 (monostable/astable modes).
- Low supply current (~80µA typical).
- High output drive (up to 50mA).
- Rail-to-rail output swing for better signal integrity.
Applications include oscillators, timers, pulse generation, and delay circuits. The CMOS design reduces power waste, making it ideal for portable and energy-efficient devices.
Package: 8-pin SOIC (CMX suffix).
Compatible with standard 555 pinouts but optimized for modern designs.
For detailed specs, refer to the Texas Instruments datasheet.

Equivalent

The LMC555CMX is a CMOS version of the classic 555 timer. Equivalent alternatives include:
- TS555 (STMicroelectronics)
- ICM7555 (Maxim Integrated/Texas Instruments)
- TLC555 (Texas Instruments)
- NA555 (Texas Instruments, standard 555 but widely compatible)
These offer similar functionality with variations in power consumption, speed, or packaging. Verify specs for your specific needs.

Features

The LMC555CMX is a CMOS version of the classic 555 timer, offering low power consumption and improved performance. Key features:
- Low Power: Operates at 1.5V–15V, ideal for battery-powered devices.
- High Input Impedance: CMOS inputs reduce loading effects.
- Low Supply Current: Typically 100µA (vs. mA in bipolar 555).
- Wide Timing Range: From microseconds to hours.
- High Output Drive: Sinks/sources up to 50mA.
- Improved Precision: Lower timing errors vs. bipolar versions.
- Pin-Compatible: Direct replacement for NE555/SE555.
- Temperature Stability: Better performance over a wide range.
Applications include timers, oscillators, and pulse generators. Compact SOIC-8 package.

Pinout

The LMC555CMX is a CMOS version of the classic 555 timer IC, packaged in an 8-pin SOIC. 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 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 GND during output low)
8. VCC – Power supply (2V–15V for LMC555)
It operates similarly to the standard 555 but with lower power consumption and improved performance in CMOS technology.

Application

The LMC555CMX, a low-power CMOS version of the 555 timer IC, is widely used in:
- Timing circuits: Delays, pulse generation, and oscillators.
- Signal generation: Square, triangle, and PWM waveforms.
- Industrial controls: Sensor interfacing and motor drivers.
- Consumer electronics: LED flashers, toys, and alarms.
- Automotive: Lighting controls and simple timers.
- Medical devices: Low-power timing applications.
Its advantages include low power consumption, wide voltage range (1.5V–15V), and compatibility with standard 555 timers. Ideal for battery-operated and precision timing applications.

Package

The LMC555CMX is available in an SOIC-8 package. This surface-mount package has 8 pins and is compact, making it suitable for space-constrained applications. The SOIC-8 is a common package type for integrated circuits, offering good thermal and electrical performance.

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