HCF4536| Datasheet

HCF4536, HCF4536BEY

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HCF4536B
PROGRAMMABLE TIMER
s

s s

24 FLIP-FLOP STAGES - COUNTS FROM 20 TO 224 LAST 16 STAGES SELECTABLE BY BCD SELECT CODE GROUP SELECT INDICATES ONE OR MORE PRIORITY INPUTS QUIESCENT CURRENT SPECIFIED UP TO 20V STANDARDIZED SYMMETRICAL OUTPUT CHARACTERISTICS 5V, 10V AND 15V PARAMETRIC RATINGS INPUT LEAKAGE CURRENT II = 100nA (MAX) AT VDD = 18V TA = 25 C 100% TESTED FOR QUIESCENT CURRENT MEETS ALL REQUIREMENTS OF JEDEC JESD13B "STANDARD SPECIFICATIONS FOR DESCRIPTION OF B SERIES CMOS DEVICES"

DIP

ORDER CODES
PACKAGE DIP TUBE HCF4536BEY T&R

DESCRIPTION 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. It PIN CONNECTION

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

October 2002

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