CAT705

更新时间： 2024-11-14 06:46:15

品牌	Logo	应用领域
安森美 - ONSEMI		监控
页数	文件大小	规格书
14页	119K
描述
μP Supervisory Circuits

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数据手册

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CAT705 数据手册

CAT705, CAT706, CAT813

µP Supervisory Circuits

FEATURES

DESCRIPTION

n Reset guaranteed valid for 1.0 V V_CC

n 6µA supply current

The CAT705, CAT706, and CAT813 provide reset and

monitoring functions for the electronic systems. Each

device monitors the system voltage and maintains a

reset output until that voltage reaches the device’s

specified trip value and then maintains the reset

output active condition until the device’s internal timer

allows the system power supply to stabilize.

n 200ms Reset pulse width

n Watchdog timer function 1.6s timeout

n Accurate brownout detection reset in 3.0, 3.6,

and 5.0 volt systems

The devices have a watchdog input which can be

n Secondary low supply monitoring on PFI input

¯¯¯¯

used to monitor a system signal and causes WDO to

n Pin and function compatible with the

go low if the signal fails to change state prior to a

timeout condition.

MAX705/MAX706/MAX813L products

n Operating Range from -40°C to +85°C

¯¯¯

The supervisory circuits provide a MR input which

initiates a reset if pulled low. The CAT705 and

n RoHS Compliant SOIC 8-lead and MSOP 8-lead

¯¯¯¯¯¯

CAT706 provide an active low RESET output. The

packages

CAT813 provides an active high RESET output.

APPLICATIONS

There is a secondary supply monitor (PFI) included for

power-fail warning.

n Microprocessor and microcontroller based

systems

n Instrument and control systems

n Portable equipment

For Ordering Information details, see page 13.

PIN FUNCTIONS

PIN CONFIGURATION

Pin Name Function

SOIC 8-Lead

¯¯¯

Manual Reset Input

Power Supply

WDO

V_CC

GND

PFI

RESET

(RESET for CAT813)

Ground

GND

WDI

PFO

Power Fail voltage monitor Input.

Power Fail Output

Watchdog Timer Input

¯¯¯¯

PFO

PFI

WDI

MSOP 8-Lead

CMOS Push-Pull Active Low Reset

Output (CAT705 & CAT706)

¯¯¯¯¯¯

RESET

(RESET for CAT813)

WDI

PFO

CMOS Push-Pull Active High Reset

Output (CAT813)

WDO

RESET

PFI

¯¯¯¯¯

WDO

Watchdog Timer Output

GND

Characteristics subject to change without notice

Doc. No. MD-3030, Rev. D

12 3 4 5 6 7...14

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