MAX6303：+5V, Low-Power, µP Supervisory Circuits with Adjustable Reset/Watchdog

The MAX6301–MAX6304 low-power microprocessor (µP) supervisory circuits provide maximum adjustability for reset and watchdog functions. The reset threshold can be adjusted to any voltage above 1.22V, using external resistors. In addition, the reset and watchdog timeout periods are adjustable using external capacitors. A watchdog select pin extends the watchdog timeout period to 500x. The reset function features immunity to power-supply transients. These four devices differ only in the structure of their reset outputs (see the Selector Guide in the full data sheet). The MAX6301–MAX6304 are available in the space-saving 8-pin µMAX® package, as well as 8-pin PDIP and SO packages.

Key Features

Adjustable Reset Threshold
Adjustable Reset Timeout
Adjustable Watchdog Timeout
500x Watchdog Timeout Multiplier
4µA Supply Current
RESET or Active-Low RESET Output Options
Push-Pull or Open-Drain Output Options
Guaranteed Active-Low RESET Asserted At or Above VCC = 1V (MAX6301/MAX6303)
Power-Supply Transient Immunity
Watchdog Function can be Disabled
PDIP/SO/µMAX Packages Available

MAX6301, MAX6302, MAX6303, MAX6304: Typical Operating Circuit

Applications/Uses

Battery-Powered Computers/Controllers
Computers: Desktop, Workstation, Server
Critical µP Monitoring
Embedded Controllers
Intelligent Instruments
Medical Equipment
Portable Equipment
Set-Top Boxes

DataSheet

title	Download file
MAX6301-MAX6304 Data Sheet	MAX6301-MAX6304.pdf

Parametrics

Part Number	Reset Thresh. (V)	Reset Out	t_RESET	Watchdog Feature	Watchdog Timeout	Reset Thresh. Accur. (%)	I_CC (µA)	Package/Pins	Budgetary Price
Part Number	Reset Thresh. (V)	Reset Out	min	Watchdog Feature	Watchdog Timeout	@ +25°C	max	Package/Pins	See Notes
MAX6301	1.2 to 1.8 1.8 to 2.5 2.5 to 3.3 3.3 to 5.5	Active Low Open Drain	1ms to 15ms 15ms to 85ms 85ms to 300ms 300ms to 1s <1ms >1s Adjustable	Cap Adjustable Input (WDI)	1s to 2s <1s >2s Adjustable	2	7	µMAX/8 PDIP(N)/8 SOIC(N)/8	$2.36 @1k
MAX6302		Active High Open Drain						µMAX/8 PDIP(N)/8 SOIC(N)/8	$2.44 @1k
MAX6303		Active Low Push-Pull						µMAX/8 PDIP(N)/8 SOIC(N)/8	$2.36 @1k
MAX6304		Active High Push-Pull						µMAX/8 PDIP(N)/8 SOIC(N)/8	$1.74 @1k

Quality and Environmental Data

MAX6303.pdf

Ordering Information

Part Number	Status	Recommended Replacement	Package	Temp	RoHS
MAX6303CPA	No Longer Available	MAX6303CPA+	PDIP(N),;8 pin;79.7 mm²	0°C to +70°C	No
MAX6303CPA+	Active		PDIP(N),;8 pin;79.7 mm²	0°C to +70°C	Lead Free
MAX6303CSA	No Longer Available	MAX6303CSA+	SOIC(N),;8 pin;30.9 mm²	0°C to +70°C	No
MAX6303CSA+	Active		SOIC(N),;8 pin;30.9 mm²	0°C to +70°C	Lead Free
MAX6303CSA+T	Active		SOIC(N),;8 pin;30.9 mm²	0°C to +70°C	Lead Free
MAX6303CSA-T	No Longer Available	MAX6303CSA+T	SOIC(N),;8 pin;30.9 mm²	0°C to +70°C	No
MAX6303CUA	No Longer Available	MAX6303CUA+	µMAX,;8 pin;15.6 mm²	0°C to +70°C	No
MAX6303CUA+	Active		µMAX,;8 pin;15.6 mm²	0°C to +70°C	Lead Free
MAX6303CUA+T	Active		µMAX,;8 pin;15.6 mm²	0°C to +70°C	Lead Free
MAX6303CUA-T	No Longer Available	MAX6303CUA+T	µMAX,;8 pin;15.6 mm²	0°C to +70°C	No
Part Number	Status	Recommended Replacement	Package	Temp	RoHS
MAX6303EPA	No Longer Available		PDIP(N),;8 pin;79.7 mm²	-40°C to +85°C	No
MAX6303ESA	No Longer Available	MAX6303ESA+	SOIC(N),;8 pin;30.9 mm²	-40°C to +85°C	No
MAX6303ESA+	Active		SOIC(N),;8 pin;30.9 mm²	-40°C to +85°C	Lead Free
MAX6303ESA+T	Active		SOIC(N),;8 pin;30.9 mm²	-40°C to +85°C	Lead Free
MAX6303ESA-T	No Longer Available	MAX6303ESA+T	N.SO;8 pin	-40°C to +85°C	See data sheet