MAX6369KA+ Maxim Integrated Products, MAX6369KA+ Datasheet

MAX6369KA+

Manufacturer Part Number

MAX6369KA+

Description

Manufacturer

Maxim Integrated Products

Datasheet

1.MAX6369KA.pdf (10 pages)

Specifications of MAX6369KA+

Pack_quantity

Comm_code

85423190

Lead_time

119

Analog

MXMMAX6369KA

Eccn

EAR99

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The MAX6369–MAX6374 are pin-selectable watchdog

timers that supervise microprocessor (µP) activity and

signal when a system is operating improperly. During

normal operation, the microprocessor should repeated-

ly toggle the watchdog input (WDI) before the selected

watchdog timeout period elapses to demonstrate that

the system is processing code properly. If the µP does

not provide a valid watchdog input transition before the

timeout period expires, the supervisor asserts a watch-

dog (WDO) output to signal that the system is not exe-

cuting the desired instructions within the expected time

frame. The watchdog output pulse can be used to reset

the µP or interrupt the system to warn of processing

errors.

The MAX6369–MAX6374 are flexible watchdog timer

supervisors that can increase system reliability through

notification of code execution errors. The family offers

several pin-selectable watchdog timing options to

match a wide range of system timing applications:

• Watchdog startup delay: provides an initial delay

• Watchdog timeout period: normal operating watch-

• Watchdog output/timing options: open drain (100ms)

The MAX6369–MAX6374 operate over a +2.5V to +5.5V

supply range and are available in miniature 8-pin

SOT23 packages.

19-1676; Rev 5; 1/11

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

________________________Applications

MAX6369

MAX6370

MAX6371

MAX6372

MAX6373

MAX6374

before the watchdog timer is started.

dog timeout period after the initial startup delay.

or push-pull (1ms).

PART

Embedded Control Systems

Industrial Controllers

Critical µP and Microcontroller (µC) Monitoring

Automotive

Telecommunications

Networking

Open Drain

Push-Pull

Open Drain

Push-Pull

Open Drain

Push-Pull

OUTPUT

________________________________________________________________ Maxim Integrated Products

General Description

WDO PULSE

WIDTH (ms)

100

Pin-Selectable Watchdog Timers

Selectable: 1ms to 60s

60s

S el ectab l e: 200µs to 60s or fi r st ed g e

MINIMUM STARTUP DELAY

o Precision Watchdog Timer for Critical

o Pin-Selectable Watchdog Timeout Periods

o Pin-Selectable Watchdog Startup Delay Periods

o Ability to Change Watchdog Timing Characteristics

o Open-Drain or Push-Pull Pulsed Active-Low

o Watchdog Timer Disable Feature

o +2.5V to +5.5V Operating Voltage

o 8µA Low Supply Current

o No External Components Required

o Miniature 8-Pin SOT23 Package

Note: All devices are available in tape-and-reel only. Required

order increment is 2,500 pieces.

/V denotes an automotive qualified part.

Devices are available in both leaded and lead-free packaging.

Specify lead-free by replacing “-T” with “+T” when ordering.

Pin Configuration appears at end of data sheet.

MAX6369KA-T

MAX6369KA/V-T

MAX6369KA/V+T

MAX6370KA-T

MAX6371KA-T

MAX6372KA-T

MAX6373KA-T

MAX6374KA-T

µP Applications

Without Power Cycling

Watchdog Output

PART

-40°C to +125°C

Ordering Information

RANGE

S el ectab l e: 1ms to 60s

S el ectab l e: 30µs to 10s

TEMP

MINIMUM WATCHDOG TIMEOUT

Selector Guide

PIN-

PACKAGE

8 SOT23

Features

MARK

AADC

AADD

AADG

AADH

AEQV

AADE

AADF

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