MAX705MJA Maxim Integrated Products, MAX705MJA Datasheet

MAX705MJA

Manufacturer Part Number

MAX705MJA

Description

Supervisory Circuits Single uPower Supervisor

Manufacturer

Maxim Integrated Products

Datasheets

1.MAX705MJA.pdf (11 pages)

2.MAX705MJA.pdf (12 pages)

3.MAX705MJA.pdf (12 pages)

Specifications of MAX705MJA

Number Of Voltages Monitored

Monitored Voltage

4.65 V

Undervoltage Threshold

4.5 V

Overvoltage Threshold

4.75 V

Output Type

Active Low, Push-Pull

Manual Reset

Resettable

Watchdog

Battery Backup Switching

No Backup

Power-up Reset Delay (typ)

280 ms

Supply Voltage (max)

5.5 V

Supply Voltage (min)

1.2 V

Supply Current (typ)

500 uA

Maximum Power Dissipation

640 mW

Maximum Operating Temperature

+ 125 C

Mounting Style

Through Hole

Package / Case

CDIP N

Minimum Operating Temperature

- 55 C

Power Fail Detection

Yes

Lead Free Status / Rohs Status

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

MAX705MJA

Manufacturer:

Quantity:

Company:

BOSTOCK HK LIMITED

Part Number:

MAX705MJA

Manufacturer:

Quantity:

Company:

Meier Automation Equipment Co., Limited

Part Number:

MAX705MJA

Manufacturer:

MAXIM/美信

Quantity:

20 000

Company:

H&T Electronics

Part Number:

MAX705MJA

Quantity:

3 700

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

MAX705MJA/883

Manufacturer:

MAX

Quantity:

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

MAX705MJA/883B

Manufacturer:

EMCT

Quantity:

1 400

Company:

BOSTOCK HK LIMITED

Part Number:

MAX705MJA/883B

Manufacturer:

MAX

Quantity:

Current page: 1 of 11
Download datasheet (236Kb)

19-4334; Rev. 7; 12/05

The MAX705-MAX708/MAX813L microprocessor (µP)

supervisory circuits reduce the complexity and number

of components required to monitor power-supply and

battery functions in µP systems. These devices signifi-

cantly improve system reliability and accuracy com-

pared to separate ICs or discrete components.

The MAX705/MAX706/MAX813L provide four functions:

1) A reset output during power-up, power-down, and

2) An independent watchdog output that goes low if

3) A 1.25V threshold detector for power-fail warning,

4) An active-low manual-reset input.

The MAX707/MAX708 are the same as the MAX705/

MAX706, except an active-high reset is substituted for

the watchdog timer. The MAX813L is the same as the

MAX705, except RESET is provided instead of RESET.

Two supply-voltage monitor levels are available: The

MAX705/MAX707/MAX813L generate a reset pulse when

the supply voltage drops below 4.65V, while the

MAX706/MAX708 generate a reset pulse below 4.40V.

All four parts are available in 8-pin DIP, SO and µMAX

packages.

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

__________Typical Operating Circuit

_______________General Description

_______________________Applications

brownout conditions.

the watchdog input has not been toggled within 1.6

seconds.

low-battery detection, or for monitoring a power sup-

ply other than +5V.

UNREGULATED DC

Computers

Controllers

Intelligent Instruments

Automotive Systems

Critical µP Power Monitoring

PUSHBUTTON

SWITCH

+5V DC LINEAR

________________________________________________________________ Maxim Integrated Products

REGULATOR

MAX667

PFI

MAX813L

MAX705

MAX706

RESET

Low-Cost, µP Supervisory Circuits

WDO

PFO

PFI

RESET

I/O LINE

INTERRUPT

NMI

♦ µMAX Package: Smallest 8-Pin SO

♦ Guaranteed RESET Valid at V

♦ Precision Supply-Voltage Monitor

♦ 200ms Reset Pulse Width

♦ Debounced TTL/CMOS-Compatible

♦ Independent Watchdog Timer—1.6sec Timeout

♦ Active-High Reset Output

♦ Voltage Monitor for Power-Fail or Low-Battery

Ordering Information continued at end of data sheet.

* Dice are specified at T

**Contact factory for availability and processing to MIL-STD-883.

Devices in PDIP, SO and µMAX packages are available in both

leaded and lead-free packaging. Specify lead free by adding

the + symbol at the end of the part number when ordering.

Lead free not available for CERDIP package.

_________________Pin Configurations

______________Ordering Information

MAX705CPA

MAX705CSA

MAX705CUA

MAX705C/D

___________________________Features

Manual-Reset Input

(MAX705/MAX706)

(MAX707/MAX708/MAX813L)

Warning

PART

( ) ARE FOR MAX813L ONLY.

Pin Configurations continued at end of data sheet.

4.65V in MAX705/MAX707/MAX813L

4.40V in MAX706/MAX708

TOP VIEW

GND

PFI

TEMP RANGE

0°C to +70°C

= +25°C.

MAX813L

MAX705

MAX706

DIP/SO

MAX707

MAX708

DIP/SO

WDO

RESET (RESET)

WDI

PFO

RESET

N.C.

PFO

= 1V

8 Plastic DIP

8 SO

8 µMAX

Dice*

PIN-PACKAGE

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