STMicroelectronics M74HC4020 User Manual

M74HC4020

14 STAGE BINARY COUNTER

■HIGH SPEED :

fMAX = 70 MHz (TYP.) at VCC = 6V

■LOW POWER DISSIPATION: ICC =4μA(MAX.) at TA=25°C

■HIGH NOISE IMMUNITY: VNIH = VNIL = 28 % VCC (MIN.)

■SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 4mA (MIN)

■BALANCED PROPAGATION DELAYS: tPLH tPHL

■WIDE OPERATING VOLTAGE RANGE: VCC (OPR) = 2V to 6V

■PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 4020

DIP		SOP	TSSOP
ORDER CODES
PACKAGE		TUBE	T & R
DIP		M74HC4020B1R
SOP		M74HC4020M1R	M74HC4020RM13TR
TSSOP			M74HC4020TTR

DESCRIPTION

The M74HC4020 is an high speed CMOS 14 STAGE BINARY COUNTER fabricated with silicon gate C2MOS technology.

A clear input is used to reset the counter to the all low level state. A high level on CLEAR accomplishes the reset function. A negative transition on the CLOCK input increments the counter by one.

For M74HC4020 twelve kind of divided output are provided; 1st and 4th stage to 14th stage.

The maximum division available at last stage is 1/16384 x fIN at clock.

All inputs are equipped with protection circuits against static discharge and transient excess voltage.

PIN CONNECTION AND IEC LOGIC SYMBOLS

July 2001

1/11

M74HC4020

INPUT AND OUTPUT EQUIVALENT CIRCUIT	PIN DESCRIPTION
	PIN No	SYMBOL	NAME AND FUNCTION
	9, 7, 6, 5, 3,	Q1, Q4 to
	2, 4, 13, 12,		Parallel Outputs
		Q14
	14, 15, 1
	10	CLOCK	Clock Input (LOW to
			HIGH, Edge Triggered)
	11	CLEAR	Reset Inputs
	8	GND	Ground (0V)
	16	Vcc	Positive Supply Voltage
TRUTH TABLE
CLOCK	CLEAR		OUTPUT STATE
X	H	ALL OUTPUTS = "L"
	L		NO CHANGE
	L	ADVANCE TO NEXT STATE

LOGIC DIAGRAM

This logic diagram has not be used to estimate propagation delays

2/11

M74HC4020

ABSOLUTE MAXIMUM RATINGS

Symbol	Parameter	Value	Unit
VCC	Supply Voltage	-0.5 to +7	V
VI	DC Input Voltage	-0.5 to VCC + 0.5	V
VO	DC Output Voltage	-0.5 to VCC + 0.5	V
IIK	DC Input Diode Current	± 20	mA
IOK	DC Output Diode Current	± 20	mA
IO	DC Output Current	± 25	mA
ICC or IGND	DC VCC or Ground Current	± 50	mA
PD	Power Dissipation	500(*)	mW
Tstg	Storage Temperature	-65 to +150	°C
TL	Lead Temperature (10 sec)	300	°C

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

(*) 500mW at 65 °C; derate to 300mW by 10mW/°C from 65°C to 85°C

RECOMMENDED OPERATING CONDITIONS

Symbol		Parameter		Value	Unit
VCC	Supply Voltage			2 to 6	V
VI	Input Voltage			0 to VCC	V
VO	Output Voltage			0 to VCC	V
Top	Operating Temperature			-55 to 125	°C
	Input Rise and Fall Time		VCC = 2.0V	0 to 1000	ns
tr, tf			VCC = 4.5V	0 to 500	ns
			VCC = 6.0V	0 to 400	ns

3/11

M74HC4020

DC SPECIFICATIONS

			Test Condition						Value
Symbol	Parameter	VCC				TA = 25°C			-40 to 85°C		-55 to 125°C		Unit
		(V)			Min.		Typ.	Max.	Min.	Max.	Min.	Max.
VIH	High Level Input	2.0			1.5				1.5		1.5
	Voltage	4.5			3.15				3.15		3.15		V
		6.0			4.2				4.2		4.2
VIL	Low Level Input	2.0						0.5		0.5		0.5
	Voltage	4.5						1.35		1.35		1.35	V
		6.0						1.8		1.8		1.8
VOH	High Level Output	2.0		IO=-20 μA	1.9		2.0		1.9		1.9
	Voltage
		4.5		IO=-20 μA	4.4		4.5		4.4		4.4
		6.0		IO=-20 μA	5.9		6.0		5.9		5.9		V
		4.5		IO=-4.0 mA	4.18		4.31		4.13		4.10
		6.0		IO=-5.2 mA	5.68		5.8		5.63		5.60
VOL	Low Level Output	2.0		IO=20 μA			0.0	0.1		0.1		0.1
	Voltage
		4.5		IO=20 μA			0.0	0.1		0.1		0.1
		6.0		IO=20 μA			0.0	0.1		0.1		0.1	V
		4.5		IO=4.0 mA			0.17	0.26		0.33		0.40
		6.0		IO=5.2 mA			0.18	0.26		0.33		0.40
II	Input Leakage	6.0		VI = VCC or GND				± 0.1		± 1		± 1	μA
	Current
ICC	Quiescent Supply	6.0		VI = VCC or GND				4		40		80	μA
	Current

4/11