MC14541BDG is a CMOS programmable timer for delay and low-frequency clock in industrial, consumer and automotive circuits
CMOS programmable timer IC
,industrial delay timer IC
,automotive low-frequency clock IC
The MC14541BDG is a CMOS programmable timer for delay and low-frequency clock generation in industrial, consumer, and automotive circuits. This integrated circuit from ON Semiconductor's 4000-series logic family provides accurate, long-duration time delays without requiring complex external timing circuits.
This device integrates an internal oscillator circuit, frequency divider chain, output logic, and reset control unit on a single chip. Timing period is determined by external resistor and capacitor components connected to the oscillator pin.
Sets base clock frequency with external R and C components
Provides multiple frequency division coefficients for flexible time scaling
Two operating modes: one-shot delay and free-running oscillator
CMOS rail-to-rail output with high driving capability
A trigger signal initiates a single fixed delay cycle. Output stays low during countdown, then switches high and remains latched until master reset is activated. Ideal for single delay trigger tasks.
Continuously cycles timing sequence, generating a stable square wave signal with user-defined period. Functions as a low-frequency clock generator for slow digital circuits.
- Industrial Timing Control - Delay relays, motor startup delay, equipment power-off delay, automatic shutdown timers
- Consumer Electronic Products - Appliance timing functions, LED flashing controllers, battery-powered toy circuits
- Alarm & Security Systems - Delay trigger for sensors, alarm signal hold timer, delayed buzzer activation
- Low-Frequency Clock Generation - Slow clock source for microcontrollers, pulse signal generation
- Automotive Auxiliary Circuits - Interior light delay control, window lift delay timer, warning light timing
- General Logic Circuit Delay - Signal debouncing, sequential logic delay matching, power supply startup protection
- Minimal external components - Only one resistor and one capacitor required for timing setup
- Ultra-wide adjustable timing range covering microseconds to hour-level delays
- Low power consumption suitable for battery-operated portable devices
- Broad operating voltage (3V to 18V) supports both low-voltage and industrial circuits
- High ESD tolerance and strong anti-interference performance for harsh environments
| Parameter | Specification |
|---|---|
| Supply Voltage Range | 3V to 18V |
| Quiescent Current | Extremely low |
| Noise Immunity | High |
| Operation | Fully static, no minimum clock frequency requirement |
