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LMC555CTP/NOPB is low-power CMOS 555 timer for delay, pulse generation, PWM and simple switch control circuits

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Integrated Circuits ICs
lmc555.pdf
Specifications
Manufacturer:
TI
Product Number:
LMC555CTP/NOPB
Description:
IC OSC SINGLE TIMER 3MHZ 8-UFBGA
Highlight:

low-power CMOS 555 timer

,

555 timer for delay circuits

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555 timer with PWM control

Introduction
LMC555CTP/NOPB - Low-Power CMOS 555 Timer

The LMC555CTP/NOPB is a low-power CMOS version of the classic 555 timer IC from TI, designed for delay, pulse generation, PWM, and simple switch control circuits.

Core Functionality

This IC integrates comparators, voltage divider resistors, flip-flop, discharge transistor, and output stage in a single package. It operates across a wide voltage range of 1.8V to 18V with low supply current and features rail-to-rail swing capability with reduced noise compared to bipolar 555 timers.

Package Information: CTP denotes plastic DIP through-hole package; NOPB indicates lead-free packaging tray.
Operating Modes
Astable Mode

Generates continuous adjustable square-wave clock signals without external trigger. Ideal for pulse generation, LED flashing, and tone circuits.

Monostable Mode

Single trigger pulse outputs fixed-duration delay signals. Used for timing applications, debouncing, and delayed switching control.

Bistable Mode

Two trigger inputs form a simple latch circuit for switch state locking and anti-jitter key detection applications.

Typical Applications
  • Timing circuits: Power-on delay, automatic shutdown timer, time delay switch
  • Pulse & signal generation: Clock pulse source, LED flash controller, buzzer audio generator
  • Switch control: Touch switch, anti-jitter key circuit, simple logic latch
  • Signal conditioning: Signal debouncing, pulse width modulation (PWM) signal generation
  • Low-power portable equipment: Battery-powered toy timing, portable indicator light drive
Key Advantages

Low power consumption, wide voltage range, minimal external components, flexible timing adjustment, reduced noise, and simplified circuit design.

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