IW4541B - IK Semiconductor

IW4541B Programmable Timer

TECHNICAL DATA IW4541B Programmable Timer High-Performance Silicon-Gate CMOS The IW4541B programmable timer consists of a 16-stage binary counter, an oscillator that is controlled by external R-C components (2 resistors and a capacitor), an automatic power-on reset circuit, and output control logic. The counter increments on positive-edge clock transitons .

Features

tate after 2N-1 counts and IW4541BD SOIC remains in that state until another MASTER RESET pulse is applied or TA = -55° to 125° C for all packages the MODE input is set to a logic “1”. Timing is initialized by setting the AUTO RESET input (pin 5) to logic “0”and turning power on. If pin 5 is set to logic “1”, the AUTO RESET circuit is disabled and counting will not start untill after a positive MASTER RESET pulse is applied and returns to a low level. The AUTO RESET consumes an appreciable amount of power and should not be used if low-power operation is desired. For reliable automatic power-on.