HCF4541B is a monolithic integrated circuit produced by Honeywell Corporation. It is mainly used as a timer and uses metal oxide semiconductor technology. It has two packaging forms: DIP and SOP. The device consists of a 16-stage binary counter, an oscillator controlled by two external resistors and a capacitor, an output control logic and an automatic power-on reset circuit. The counter can change at the positive edge clock transition and can be cleared by the MASTER RESET input. The output of this timer is the Q or Q output from the 8th, 13th, or 16th counter stage. The choice of the stage depends on the time.
The HCF4541B is a monolithic integrated circuit fabricated in Metal Oxide Semiconductor technology. It functions as a 16-stage binary counter, an oscillator controlled by external resistors and a capacitor, an output control logic, and an automatic power-on reset circuit. The device operates with very slow clock rise and fall times and features a built-in low-power RC oscillator, though an external clock can be applied to pin 3.
| Oscillator Frequency Range | DC to 100KHz |
|---|---|
| Supply Voltage | 3 to 20 V |
| Operating Temperature | -55 to +125 °C |
| Output Drive Current (Source) | -10 mA (at 5V) |
| Output Drive Current (Sink) | 10 mA (at 5V) |
| Input Capacitance | 7.5 pF |
| Package Types | DIP and SOP |
The oscillator frequency range is from DC to 100KHz.
Yes, an external clock applied to pin 3 can be used instead of the oscillator.
The quiescent current is typically 0.04 mA at 5V.