imp706resa A1 PROs co., Ltd., imp706resa Datasheet

imp706resa

Manufacturer Part Number

imp706resa

Description

3/3.3/4.0v ?p Supervisor Circuits

Manufacturer

A1 PROs co., Ltd.

Datasheet

1.IMP706RESA.pdf (9 pages)

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The IMP706P/R/S/T/J and IMP708R/S/T/J CMOS supervisor circuits

monitor power-supply and battery voltage level, and P/ C operation.

A reset is generated when the supply drops below 2.63V (IMP706P/R,

IMP708R), 2.93V (IMP706S, IMP708S), 3.08V (IMP706T, IMP708T) or 4.00

(IMP706J, IMP708J).

The family offers several functional options. Each device generates a

reset signal during power-up, power-down and during brownout

conditions.

In addition, the IMP706P/R/S/T/J feature a 1.6 second watchdog timer.

The watchdog timer output will trigger a reset if connected to MR.

Unlike competitive devices, floating the WDI input pin disables the

watchdog timer.

The IMP708R/S/T/J have both active-HIGH and active-LOW reset out-

puts but no watchdog function. The IMP706P has the same pin-out and

functions as the IMP706R but has an active-HIGH reset output.

A versatile power-fail circuit, useful in checking battery levels and

non-5V supplies, has a 1.25V threshold. All devices have a manual

reset input.

All devices are available in 8-pin DIP, SO and the compact MicroSO

packages. The MicroSO package requires 50% less PC board area than

the conventional SO package.

3/3.3/4.0V

1999 IMP, Inc.

Block Diagrams

WDI

PFI

OWER

– Lo

– W

– Br

– Lo

– W

– Br

IMP706P/R/S/T/J

atc

20k

w suppl

2.63V (IMP706P/R)

2.93V (IMP706S)

3.08V (IMP706T)

4.00V (IMP706J)

wnout det

Transition

ANAGEMENT

Detector

–

hdog timer

1.25V

Generator

Watchdog

Timebase

y cur

P Super

RESET

Timer

IMP706P/R/S/T/J, IMP708R/S/T/J

–

ection

GND

ent

visor Cir

706P_01.eps

WDO

RESET

(RESET) IMP706P

PFO

408-432-9100/www.impweb.com

cuits

PFI

Computers and controllers

CTI applications

Embedded controllers

Battery operated systems

Intelligent instruments

Wireless communication systems

PDAs and handheld equipment

Lower power, pin compatible replacements for

Maxim MAX706P/R/S/T, MAX708R/S/T

Precision power supply monitor

Debounced manual reset input

Auxiliary voltage monitor comparator

200ms reset time delay

Three reset signal options

DIP, SO and MicroSO packages

Guaranteed RESET assertion to V

– 30% lower supply current:140µA vs. 200µA

– 2.63V threshold (IMP706P/R, IMP708R)

– 2.93V threshold (IMP706S, IMP708S)

– 3.08V threshold (IMP706T, IMP708T)

– New 4.00V threshold (IMP706J, IMP708J)

– 1.25V threshold

– Battery monitor/auxiliary supply monitor

Watchdog timer (IMP706P/R/S/T/J)

– Watchdog can be disabled by floating WDI

– Active HIGH: IMP706P

– Active LOW: IMP706R/S/T/J

– Active HIGH & LOW outputs: IMP708R/S/T/J

IMP708R/S/T/J

20k

2.63V (IMP708R)

2.93V (IMP708S)

3.08V (IMP708T)

4.00V (IMP708J)

–

1.25V

Generator

RESET

Key Features

Applications

–

GND

= 1.1V

706P_02.eps

RESET

PFO

Related parts for imp706resa

imp706resa Summary of contents

Page 1

IMP706P/R/S/T/J, IMP708R/S/T/J IMP706P/R/S/T/J, IMP708R/S/T OWER ANAGEMENT 3/3.3/4.0V µ P Super 3/3.3/4.0V µ P Super – suppl y cur r ent – suppl y cur r ent – W atc hdog timer – W atc ...

... Temperature Range Reset Threshold IMP706PCPA 8-Plastic DIP IMP706PCSA 8-SO IMP706PCUA 8-MicroSO IMP706PEPA 8-Plastic DIP IMP706PESA 8-SO IMP706RCPA 8-Plastic DIP IMP706RCSA 8-SO IMP706RCUA 8-MicroSO IMP706REPA 8-Plastic DIP IMP706RESA 8-SO IMP706SCPA 8-Plastic DIP IMP706SCSA 8-SO IMP706SCUA 8-MicroSO IMP706SEPA 8-Plastic DIP IMP706SESA 8-SO IMP706TCPA 8-Plastic DIP IMP706TCSA 8-SO IMP706TCUA 8-MicroSO IMP706TEPA ...

Page 3

Pin Terminal Voltage with Respect to Ground ...

Page 4

Electrical Characteristics (cont.) Unless otherwise noted, specifications are over the operating temperature range and V IMP708R), 3.0V to 5.5V (IMP706/8S), 3.15V to 5.5V (IMP706/8T) and 4.1V to 5.5V (IMP706/8J ...

Page 5

Pin Number IMP706P IMP706R/S/T/J IMP708R/S/T/J DIP/SO MicroSO DIP/SO MicroSO DIP/SO MicroSO Name — — — — ...

Page 6

Detail Descriptions RESET/RESET Operation The RESET/RESET signals are designed to start or return known state. With V above 1.2V, RESET and RESET are guaranteed asserted. During a power-up sequence, the reset outputs ...

Page 7

Bi-directional Reset Pin Interfacing The IMP706/8 can interface with P/ C bi-directional reset pins by connecting a 4.7k resistor in series with the RESET output and the P/ C bi-directional reset pin IMP70x Supply Voltage 4.7k RESET GND ...

Page 8

Package Dimensions – – – – – ...

Page 9

IMP, Inc. Corporate Headquarters 2830 N. First Street San Jose, CA 95134-2071 Tel: 408-432-9100 Tel: 800-438-3722 Fax: 408-434-0335 Fax-on-Demand: 1-800-249-1614 (USA) Fax-on-Demand: 1-303-575-6156 (International) e-mail: info@impinc.com http://www.impweb.com The IMP logo is a registered trademark of IMP, Inc. All other company ...

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