Motorola MC34064DM-5, MC34064DM-5R2, MC34064P-005, MC34064P-5, MC34064D-005 Datasheet

Order this document by MC34064/D

MC34064 MC33064

Undervoltage Sensing Circuit

The MC34064 is an undervoltage sensing circuit specifically designed for use as a reset controller in microprocessor-based systems. It offers the designer an economical solution for low voltage detection with a single external resistor. The MC34064 features a trimmed-in-package bandgap reference, and a comparator with precise thresholds and built-in hysteresis to prevent erratic reset operation. The open collector reset output is capable of sinking in excess of 10 mA, and operation is guaranteed down to 1.0 V input with low standby current. These devices are packaged in 3-pin TO-226AA, 8-pin SO±8 and Micro±8 surface mount packages.

Applications include direct monitoring of the 5.0 V MPU/logic power supply used in appliance, automotive, consumer and industrial equipment.

•Trimmed-In-Package Temperature Compensated Reference

•Comparator Threshold of 4.6 V at 25°C

•Precise Comparator Thresholds Guaranteed Over Temperature

•Comparator Hysteresis Prevents Erratic Reset

•Reset Output Capable of Sinking in Excess of 10 mA

•Internal Clamp Diode for Discharging Delay Capacitor

•Guaranteed Reset Operation with 1.0 V Input

•Low Standby Current

•Economical TO±226AA, SO±8 and Micro±8 Surface Mount Packages

Representative Block Diagram

Input 2 (2)

Reset

1 (1)

1.2 Vref

Gnd 3 (4)

= Sink Only

Positive True Logic

Pin numbers adjacent to terminals are for the 3±pin TO±226AA package. Pin numbers in parenthesis are for the 8±lead packages.

This device contains 21 active transistors.

UNDERVOLTAGE

SENSING CIRCUIT

SEMICONDUCTOR

TECHNICAL DATA

P SUFFIX
PLASTIC PACKAGE				Pin	1.	Reset
CASE 29
(TO±226AA)					2.	Input
	1 2				3.	Ground
		3
D SUFFIX
PLASTIC PACKAGE				8
CASE 751						1
(SO±8)
DM SUFFIX
PLASTIC PACKAGE				8
CASE 846A						1
(Micro±8)
Reset	1		8	N.C.
Input	2		7	N.C.
N.C.	3		6	N.C.
Ground	4		5	N.C.
	(Top View)

ORDERING INFORMATION

	Operating
Device	Temperature Range	Package
MC34064D±5		SO±8
	TA = 0° to +70°C
MC34064DM±5		Micro±8
MC34064P±5		TO±226AA
MC33064D±5		SO±8
	TA = ± 40° to +85°C
MC33064DM±5		Micro±8
MC33064P±5		TO±226AA

Motorola, Inc. 1996

Rev 2

MC34064 MC33064

MAXIMUM RATINGS

Rating	Symbol	Value	Unit
Power Input Supply Voltage	Vin	±1.0 to 10	V
Reset Output Voltage	VO	10	V
Reset Output Sink Current (Note 1)	ISink	Internally	mA
		Limited
Clamp Diode Forward Current, Pin 1 to 2 (Note 1)	IF	100	mA
Power Dissipation and Thermal Characteristics
P Suffix, Plastic Package
Maximum Power Dissipation @ TA = 25°C	PD	625	mW
Thermal Resistance, Junction±to±Air	RθJA	200	°C/W
D Suffix, Plastic Package
Maximum Power Dissipation @ TA = 25°C	PD	625	mW
Thermal Resistance, Junction±to±Air	RθJA	200	°C/W
DM Suffix, Plastic Package
Maximum Power Dissipation @ TA = 25°C	PD	520	mW
Thermal Resistance, Junction±to±Air	RθJA	240	°C/W
Operating Junction Temperature	TJ	+150	°C
Operating Ambient Temperature	TA		°C
MC34064		0 to +70
MC33064		±40 to +85
Storage Temperature Range	Tstg	±65 to +150	°C

NOTE: ESD data available upon request.

ELECTRICAL CHARACTERISTICS (For typical values TA = 25°C, for min/max values TA is the operating ambient temperature range that applies [Notes 2 and 3] unless otherwise noted.)

		Characteristics				Symbol	Min	Typ	Max	Unit
	COMPARATOR
	Threshold Voltage									V
	High State Output (Vin Increasing)					VIH	4.5	4.61	4.7
	Low State Output (Vin Decreasing)					VIL	4.5	4.59	4.7
	Hysteresis					VH	0.01	0.02	0.05
	RESET OUTPUT
	Output Sink Saturation					VOL				V
	(Vin = 4.0 V, ISink = 8.0 mA)						±	0.46	1.0
	(Vin = 4.0 V, ISink = 2.0 mA)						±	0.15	0.4
	(Vin = 1.0 V, ISink = 0.1 mA)						±	±	0.1
	Output Sink Current (Vin, Reset = 4.0 V)					ISink	10	27	60	mA
	Output Off-State Leakage (Vin, Reset = 5.0 V)					IOH	±	0.02	0.5	μA
	Clamp Diode Forward Voltage, Pin 1 to 2 (IF = 10 mA)					VF	0.6	0.9	1.2	V
	TOTAL DEVICE
	Operating Input Voltage Range					Vin	1.0 to 6.5	±	±	V
	Quiescent Input Current (Vin = 5.0 V)					Iin	±	390	500	μA
	NOTES: 1. Maximum package power dissipation limits must be observed.
		2. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible.
		3. Tlow = 0°C for MC34064			Thigh = +70°C for MC34064
		±40°C for MC33064			+85°C for MC33064

2	MOTOROLA ANALOG IC DEVICE DATA

MC34064 MC33064

Figure 1. Reset Output Voltage versus

Input Voltage

	1	RL = 10 k to Vin
	0
	8.0	TA = 25°C
(V)
VOLTAGE	6.0
, OUTPUT	4.0
O	2.0
V
	0	2.0	4.0	6.0	8.0	1
	0
			Vin, INPUT VOLTAGE (V)			0

Figure 2. Reset Output Voltage versus

Input Voltage

	5.0
	RL = 10 k to Vin
	TA = 25°C
(V)	4.0
VOLTAGE	3.0
, OUTPUT	2.0
O	1.0
V
	0	4.58	4.60	4.62	4.64
	4.56
	0	0	0	0	0
			Vin, INPUT VOLTAGE (V)

Vth, THRESHOLD VOLTAGE (V)

Figure 3. Comparator Threshold Voltage

versus Temperature

Figure 4. Input Current versus Input Voltage

4.630									1.0
RL = 10 k to Vin												TA = +25°C
4.620			Upper Threshold					(mA)	0.8
			High State Output									±40°C
4.610
								CURRENT	0.6
4.600													+85°C
4.590								INPUT,	0.4	TA = +25°C
4.580			Lower Threshold					in	0.2	+85°C		±40°C
			Low State Output					I
4.570	±25	0	25	50	75	100	125		0	2.0	4.0	6.0	8.0	10
±55									0
		TA, AMBIENT TEMPERATURE (°C)									Vin, INPUT VOLTAGE (V)

Figure 5. Reset Output Saturation versus

Sink Current

Figure 6. Reset Delay Time

	2.0					Reset
		Vin = 4.0 V					V = 5.0 V to 4.0 V
				TA = 25°C		90%	in
(V)							RL = 10 k
SATURATION	1.5		TA = 85°C				TA = 25°C
	1.0			°		Vin
				TA = ±40	C	5.0 V ±
OUTPUT						4.0 V ±
						Vin	10k
,	0.5					5.0V	Reset
						4.0V
OL						10%
V
	0					REF
		10	20	30		40
	0
			ISink, SINK CURRENT (mA)				200 ns/DIV

MOTOROLA ANALOG IC DEVICE DATA	3