HCF4536B

HCF4536B is a monolithic integrated circuit fabricated in Metal Oxide Semiconductor technology available in DIP package.

HCF4536B is a programmable timer consisting of 24 ripple-binary counter stages. The salient feature of this device is its flexibility. The device can count from 1 to 2²⁴ or the first 8 stages can be bypassed to allow an output, selectable by a 4-bit code, from any one of the remaining 16 stages. HCF4536B can be driven by an external clock or an RC oscillator that can be constructed using on-chip components. Input IN1 serves as either the external clock input or the input to the on-chip RC oscillator. OUT1 and OUT2 are connection terminals for the external RC components. In addition, an on-chip monostable circuit is provided to allow a variable pulse width output. Various timing functions can be achieved using
combinations of these capabilities. A logic "1" on
the 8-BYPASS input enables a bypass of the first
8 stages and makes stage 9 the first counter stage
of the last 16 stages. Selection of 1 of 16 outputs
is accomplished by the decoder and the BCD
inputs A, B, C, and D. MONO IN is the timing input