HCF4536B PROGRAMMABLE TIMER 0 24 FLIP-FLOP STAGES - COUNTS FROM 2 24 TO 2 LAST 16 STAGES SELECTABLE BY BCD SELECT CODE GROUP SELECT INDICATES ONE OR MORE PRIORITY INPUTS DIP QUIESCENT CURRENT SPECIFIED UP TO 20V STANDARDIZED SYMMETRICAL OUTPUT CHARACTERISTICS ORDER CODES 5V, 10V AND 15V PARAMETRIC RATINGS PACKAGE TUBE T & R INPUT LEAKAGE CURRENT DIP HCF4536BEY I = 100nA (MAX) AT V = 18V T = 25C I DD A 100% TESTED FOR QUIESCENT CURRENT MEETS ALL REQUIREMENTS OF JEDEC can be driven by an external clock or an RC JESD13BSTANDARD SPECIFICATIONS oscillator that can be constructed using on-chip FOR DESCRIPTION OF B SERIES CMOS components. Input IN1 serves as either the DEVICE external clock input or the input to the on-chip RC oscillator. OUT1 and OUT2 are connection DESCRIPTION terminals for the external RC components. In addition, an on-chip monostable circuit is provided HCF4536B is a monolithic integrated circuit to allow a variable pulse width output. Various fabricated in Metal Oxide Semiconductor timing functions can be achieved using technology available in DIP package. combinations of these capabilities. A logic1 on HCF4536B is a programmable timer consisting of the 8-BYPASS input enables a bypass of the first 24 ripple-binary counter stages. The salient 8 stages and makes stage 9 the first counter stage feature of this device is its flexibility. The device 24 of the last 16 stages. Selection of 1 of 16 outputs can count from 1 to 2 or the first 8 stages can be is accomplished by the decoder and the BCD bypassed to allow an output, selectable by a 4-bit inputs A, B, C, and D. MONO IN is the timing input code, from any one of the remaining 16 stages. It PIN CONNECTION October 2002 1/13 Obsolete Product(s) - Obsolete Product(s) HCF4536B for the on-chip monostable oscillator. Grounding one-shot circuit and controls its pulse width. A fast of the MONO IN terminal through a resistor of 10 test mode is enabled by a logic1 on 8-BYPASS, K or higher, disables the one shot circuit and SET, and RESET. This mode divides the 24-stage connects the decoder directly to the DECODE counter into three 8-stage sections to facilitate a OUT terminal. A resistor to V and a capacitor to fast test sequence. DD ground from the MONO IN terminal enables the INPUT EQUIVALENT CIRCUIT PIN DESCRIPTION PIN No SYMBOL NAME AND FUNCTION 9, 10, 11, 12 A, B, C, D Binary Select Input 1 SET Set input 2 RESET Reset Input Monostable OscillatorTim- 15 MONO IN ing Input 8Bypass input( bypass 6 8BYPASS the first 8 stages) External Clock Input or 3IN1 RC oscillator Input 4, 5 OUT1, OUT2 Outputs DECODE 13 Decode Out Terminal OUT CLOCK 7 Clock Inhibit Input INHIBIT OSC. 14 Oscillator Inhibit Input INHIBIT V 8 Negative Supply Voltage SS V 16 Positive Supply Voltage DD FUNCTIONAL DIAGRAM 2/13 Obsolete Product(s) - Obsolete Product(s)