MAX805R, MAX805S, MAX805T：3.0V/3.3V Microprocessor Supervisory Circuits

Industry's-First Battery-Backup Supervisor for 3.3V/3.0V Systems

These microprocessor (µP) supervisory circuits reduce the complexity and number of components required for power-supply monitoring and battery-control functions in µP systems. They significantly improve system reliability and accuracy compared to separate ICs or discrete components. These devices are designed for use in systems powered by 3.0V or 3.3V supplies. See the selector guide in the back of this data sheet for similar devices designed for 5V systems. The suffixes denote different reset threshold voltages: 3.075V (T), 2.925V (S), and 2.625V (R) (see Reset Threshold section in the Detailed Description). All these parts are available in 8-pin DIP and SO packages. Functions offered in this series are as follows: Part Active-Low Reset Active-High Reset Watchdog Input Manual Reset Input Backup-Battery Switch Power-Fail Threshold Accuracy Power-Fail Comparator Reset Window MAX690 √ √ √ ±4% √ ±75mV MAX704 √ √ √ ±4% √ ±75mV MAX802 √ √ √ ±2% √ ±2% MAX804 √ √ √ ±2% √ ±2% MAX805 √ √ √ ±4% √ ±75mV MAX806 √ √ √ ±2% √ ±2%

Key Features

Active-Low RESET and RESET Outputs
Manual Reset Input
Precision Supply-Voltage Monitor
200ms Reset Time Delay
Watchdog Timer (1.6sec timeout)
Battery-Backup Power Switching-Battery Can Exceed VCC in Normal Operation
40µA VCC Supply Current
1µA Battery Supply Current
Voltage Monitor for Power-Fail or Low-Battery Warning
Guaranteed Active-Low RESET Assertion to VCC = 1V
8-Pin DIP and SO Packages

MAX690T: Typical Operating Circuit

Applications/Uses

Battery-Powered Computers/Controllers
Critical µP Monitoring
Embedded Controllers
Intelligent Instruments
Portable Equipment

DataSheet

title	Download file
MAX690R-MAX806T Data Sheet	MAX690R-MAX806T.pdf

Parametrics

Part Number	Reset Thresh. (V)	Reset Out	I_CC (µA)	Oper. Temp. (°C)	Package/Pins	Budgetary Price
Part Number	Reset Thresh. (V)	Reset Out	max	Oper. Temp. (°C)	Package/Pins	See Notes
MAX690R	2.5 to 3.0	Active Low Push-Pull	50	-55 to +125 -40 to +85 0 to +70	CDIP(N)/8 PDIP(N)/8 SOIC(N)/8	$3.88 @1k
MAX690S	2.5 to 3.0	Active Low Push-Pull			CDIP(N)/8 PDIP(N)/8 SOIC(N)/8	$3.01 @1k
MAX690T	3.0 to 3.5	Active Low Push-Pull			CDIP(N)/8 PDIP(N)/8 SOIC(N)/8	$3.88 @1k
MAX704R	2.5 to 3.0	Active Low Push-Pull			CDIP(N)/8 PDIP(N)/8 SOIC(N)/8	$5.23 @1k
MAX704S	2.5 to 3.0	Active Low Push-Pull			CDIP(N)/8 PDIP(N)/8 SOIC(N)/8	$4.88 @1k
MAX704T	3.0 to 3.5	Active Low Push-Pull			CDIP(N)/8 PDIP(N)/8 SOIC(N)/8	$3.47 @1k
MAX802R	2.5 to 3.0	Active Low Push-Pull			CDIP(N)/8 PDIP(N)/8 SOIC(N)/8	$7.21 @1k
MAX802S	2.5 to 3.0	Active Low Push-Pull			CDIP(N)/8 PDIP(N)/8 SOIC(N)/8	$5.95 @1k
MAX802T	3.0 to 3.5	Active Low Push-Pull			CDIP(N)/8 PDIP(N)/8 SOIC(N)/8	$4.88 @1k
MAX804	2.5 to 3.3	Active High Active Low Open Drain			CDIP(N)/8 PDIP(N)/8 SOIC(N)/8	$7.21 @1k
MAX805R	2.5 to 3.0	Active High Open Drain			CDIP(N)/8 PDIP(N)/8 SOIC(N)/8	$7.21 @1k
MAX805S	2.5 to 3.0	Active High Open Drain			CDIP(N)/8 PDIP(N)/8 SOIC(N)/8	$4.55 @1k
MAX805T	3.0 to 3.5	Active High Open Drain			CDIP(N)/8 PDIP(N)/8 SOIC(N)/8	$4.55 @1k
MAX806	2.5 to 3.3	Active Low Push-Pull			CDIP(N)/8 PDIP(N)/8 SOIC(N)/8	$5.45 @1k

Ordering Information

Part Number	Status	Recommended Replacement	Package	Temp	RoHS
MAX805RC/D	Active		DICE SALES,;NA pin;DICE;		See data sheet
MAX805RCPA	No Longer Available	MAX805RCPA+	PDIP(N),;8 pin;79.7 mm²	0°C to +70°C	No
MAX805RCPA+	Active		PDIP(N),;8 pin;79.7 mm²	0°C to +70°C	Lead Free
MAX805RCSA	No Longer Available	MAX805RCSA+	SOIC(N),;8 pin;30.9 mm²	0°C to +70°C	No
MAX805RCSA+	Active		SOIC(N),;8 pin;30.9 mm²	0°C to +70°C	Lead Free
MAX805RCSA+T	Active		N.SO;8 pin	0°C to +70°C	See data sheet
MAX805RCSA-T	No Longer Available		N.SO;8 pin	0°C to +70°C	See data sheet
MAX805REPA	No Longer Available	MAX805REPA+	PDIP(N),;8 pin;79.7 mm²	-40°C to +85°C	No
MAX805REPA+	Active		PDIP(N),;8 pin;79.7 mm²	-40°C to +85°C	Lead Free
MAX805RESA	No Longer Available	MAX805RESA+	SOIC(N),;8 pin;30.9 mm²	-40°C to +85°C	No
Part Number	Status	Recommended Replacement	Package	Temp	RoHS
MAX805RESA+	Active		SOIC(N),;8 pin;30.9 mm²	-40°C to +85°C	Lead Free
MAX805RESA+T	Active		SOIC(N),;8 pin;30.9 mm²	-40°C to +85°C	Lead Free
MAX805RESA-T	No Longer Available	MAX805RESA+T	N.SO;8 pin	-40°C to +85°C	See data sheet
MAX805RMJA	No Longer Available		CDIP(N),;8 pin;82.6 mm²	-55°C to +125°C	No

MAX690R-MAX806T.pdf MAX806T

MAX690R-MAX806T.pdf MAX805T