4541 - Programmable timer

The 4541 is a programmable CMOS timer (shorter timing durations) with selectable single-shot or astable modes. It features a built-in oscillator, external RC timing, a programmable divider, and a reset input. It operates from 3V to 15V and is ideal for timing, delay, or oscillator applications. The 4541 offers high noise immunity, low power consumption, and flexible timing control, making it useful in various digital timing circuits.

Applications

• Programmable delay timers (in appliances or automation for timed operations)
• Astable Oscillator: generates square waves for clocks or blinking lights
• Monostable Timer: one-shot pulse generator triggered by an event
• Watchdog Timer: reset microcontrollers if they hang
• Frequency generator: Low-frequency clock source

Specifications/Features

📄 CD4541B datasheet (103 kB)

Connections