ST HCF4047B User Manual

HCF4047B

LOW POWER MONOSTABLE/ASTABLE MULTIVIBRATOR

■LOW POWER CONSUMPTION : SPECIAL CMOS OSCILLATOR CONFIGURATION

■MONOSTABLE (one - shot) OR ASTABLE (free-running) OPERATION

■TRUE AND COMPLEMENTED BUFFERED OUTPUTS

■ONLY ONE EXTERNAL R AND C REQUIRED

■BUFFERED 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"

DESCRIPTION

The HCF4047B is a monolithic integrated circuit fabricated in Metal Oxide Semiconductor technology available in DIP and SOP packages.

The HCF4047B consist of a gatable astable multivibrator with logic techniques incorporated to

			DIP	SOP
ORDER CODES
PACKAGE			TUBE	T & R
DIP			HCF4047BEY
SOP			HCF4047BM1	HCF4047M013TR

permit positive or negative edge-triggered monostable multivibrator action with retriggering and external counting options. Inputs include +TRIGGER -TRIGGER, ASTABLE, ASTABLE, RETRIGGER, and EXTERNAL RESET. Buffered outputs are Q, Q and OSCILLATOR. In all modes of operation, an external capacitor must be connected between C-Timing and RC-Common terminals, and an external resistor must be connected between the R-Timing and RC-Common terminals.

For operating modes see functional terminal connections and application notes.

PIN CONNECTION

September 2001

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HCF4047B

INPUT EQUIVALENT CIRCUIT	PIN DESCRIPTION
	PIN No	SYMBOL	NAME AND FUNCTION
	1	C	External Capacitor
	2	R	External Resistor
	3	RC COM-	External Connection to (1)
		MON	and (2)
	4	ASTABLE	Complement Astable
			Pulse
	5	ASTABLE	True Astable Pulse
	6	-TRIGGER	Negative Trigger Pulse
	8	+TRIGGER	Positive Trigger Pulse
	9	EXT. RESET	External Reset
	12	RETRIG-	Retrigger Mode Pulse
		GER
	13	OSC. OUT	Oscillator Output
	10,11	Q, Q	Q Outputs
	7	VSS	Negative Supply Voltage
	14	VDD	Positive Supply Voltage

BLOCK DIAGRAM

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HCF4047B

FUNCTIONAL TERMINAL CONNECTIONS

		TERMINAL CONNECTIONS			OUTPUT	OUTPUT PERIOD OR
	FUNCTION*			Input Pulse	PULSE
		to VDD	to VSS			PULSE WIDTH
					FROM
				to
	Astable Multivibrator
	Free Running	4, 5, 6, 14	7, 8, 9, 12	-	10, 11, 13	tA (10,11) = 4.40RC
	True Gating	4, 6, 14	7, 8, 9, 12	5	10, 11, 13
	Complement Gating	6, 14	5, 7, 8, 9, 12	4	10, 11, 13	tA (13) = 2.20RC
	Monostable Multivibrator
	Positive - Edge Trigger	4, 14	5, 6, 7, 9, 12	8	10, 11
	Negative - Edge Trigger	4, 8, 14	5, 7, 9, 12	6	10, 11
	Retriggerable	4, 14	5, 6, 7, 9	8, 12	10, 11	tM (10,11) = 2.48RC
	External Countdown**	14	5, 6, 7, 8, 9,	-	10, 11
			12

*In all cases external capacitor and resistor between pins, 1, 2 and 3 (see logic diagrams).

**Input pulse to Reset of External Counting Chip. External Counting Chip Output to pin 4.

LOGIC DIAGRAM

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HCF4047B

DETAIL FOR FLIP-FLOPS FF1 AND FF3 (a) AND FOR FLIP-FLOPS FF2 AND FF4 (b)

ABSOLUTE MAXIMUM RATINGS

Symbol	Parameter	Value	Unit
VDD	Supply Voltage	-0.5 to +22	V
VI	DC Input Voltage	-0.5 to VDD + 0.5	V
II	DC Input Current	± 10	mA
PD	Power Dissipation per Package	200	mW
	Power Dissipation per Output Transistor	100	mW
Top	Operating Temperature	-55 to +125	°C
Tstg	Storage Temperature	-65 to +150	°C

Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is not implied.

All voltage values are referred to VSS pin voltage.

RECOMMENDED OPERATING CONDITIONS

Symbol	Parameter	Value	Unit
VDD	Supply Voltage	3 to 20	V
VI	Input Voltage	0 to VDD	V
Top	Operating Temperature	-55 to 125	°C

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