MAX6740XKRVD3+T

更新时间： 2024-02-05 05:24:32

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MAX6740XKRVD3+T 数据手册

19-2531; Rev 0; 10/02

Low-Power Dual-/Triple-Voltage SC70 µP

Supervisory Circuits

General Description

Features

The MAX6736–MAX6745 are low-power dual-/triple-

voltage microprocessor (µP) supervisors. These

devices assert a reset if any monitored supply falls

below its factory-trimmed or adjustable threshold and

maintain reset for a minimum timeout period after all

supplies rise above their thresholds. The integrated

dual/triple supervisory circuits significantly reduce size

and power compared to separate ICs or discrete com-

ponents. The low supply current of 6µA makes these

devices ideal for portable equipment.

ꢀ Dual-/Triple-Supply Reset Voltage Monitors

ꢀ Precision Factory-Set Reset Thresholds for

Monitoring from 0.9V to 5.0V

ꢀ Adjustable Reset Input Down to 0.488V

ꢀ 150ms and 1200ms (min) Reset Timeout Period

Options

ꢀ V 1 Power-OK Output for Power-Supply

Sequencing Applications (MAX6741/MAX6744)

ꢀ Power-Fail Input/Power-Fail Output

The MAX6736/MAX6737 are dual fixed-voltage µP

supervisors with a manual reset input. The MAX6738/

MAX6739 have one fixed and one adjustable reset

threshold and a manual reset input. The MAX6740/

MAX6743 are triple-voltage µP supervisors with two

fixed and one user-adjustable reset threshold inputs.

The MAX6741/MAX6744 are dual-voltage µP supervi-

sors with a power-OK (POK) output ideal for power-

supply sequencing. The MAX6742/MAX6745 monitor

(MAX6742/MAX6745)

ꢀ 6µA Supply Current

ꢀ Tiny SC70 Package

Ordering Information

PART

TEMP RANGE

PIN-PACKAGE

5 SC70-5

MAX6736XK_ _D_-T

-40°C to +85°C

the primary V

supply and have an independent

MAX6737XK_ _D_-T* -40°C to +85°C

5 SC70-5

power-fail comparator.

*Future product—contact factory for availability.

The MAX6736–MAX6745 monitor I/O supply voltages

(V 1) from 1.8V to 5.0V and core supply voltages

Note: The first “_ _” or “_” are placeholders for the threshold

voltage levels of the devices. Desired threshold levels are set

by the part number suffix found in Tables 1 and 2. The “_” after

the D is a placeholder for the reset timeout period suffix found

in Table 3. For example, the MAX6736XKLTD3-T is a dual-volt-

(V 2) from 0.9V to 3.3V with factory-trimmed reset

threshold voltage options (Table 1). An external

adjustable RSTIN input option allows monitoring volt-

ages down to 0.5V.

age supervisor V 1 = 4.625V, V 2 = 3.075V, and a 150ms

A variety of push-pull or open-drain reset outputs along

with manual reset input and power-fail input/output fea-

tures are available (see the Selector Guide). The

MAX6736–MAX6745 are offered in a space-saving 5-pin

SC70 package and operate over the -40°C to +85°C

temperature range.

minimum reset timeout period. All devices are available in

tape-and-reel only. There is a 2500-piece minimum order

increment for standard versions (see Table 1). Sample stock is

typically held on standard versions only. Nonstandard versions

require a minimum order increment of 10,000 pieces. Contact

factory for availability.

Applications

Ordering Information continued at end of data sheet.

Selector Guide continued at end of data sheet.

Pin Configurations appear at end of data sheet.

Typical Application Circuits appear at end of data sheet.

Functional Diagram appears at end of data sheet.

Portable/Battery-

Powered Equipment

Controllers

PDAs

Multivoltage Systems

Notebook Computers

GPS Equipment

POS Equipment

Selector Guide

POWER-FAIL

INPUT/

OUTPUT

VOLTAGE

MONITORS

OPEN-DRAIN

PUSH-PULL

RESET

MANUAL

RESET

POK

OUTPUT

RSTIN

INPUT

PART

RESET

MAX6736

MAX6737

MAX6738

2 fixed

—

1 fixed, 1 adj

—

*Manual reset detect on RESET output.

________________________________________________________________ Maxim Integrated Products

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.

12 3 4 5 6 7...16

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与MAX6740XKRVD3+T相关器件

型号	品牌	获取价格	描述	数据表
MAX6740XKRVD3-T	MAXIM	获取价格	Low-Power Dual-/Triple-Voltage SC70 µ.P Supervisory Circuits
MAX6740XKRVD7+T	MAXIM	获取价格	Power Supply Support Circuit, Adjustable, 1 Channel, BICMOS, PDSO5, LEAD FREE, EIAJ, SC-70
MAX6740XKRVD7-T	MAXIM	获取价格	Low-Power Dual-/Triple-Voltage SC70 µ.P Supervisory Circuits
MAX6740XKRYD3+T	MAXIM	获取价格	暂无描述
MAX6740XKRYD3-T	MAXIM	获取价格	Low-Power Dual-/Triple-Voltage SC70 µ.P Supervisory Circuits
MAX6740XKRYD7+T	MAXIM	获取价格	Power Supply Support Circuit, Adjustable, 3 Channel, +2.625VV, BICMOS, PDSO5, SC-70, 5 PIN
MAX6740XKRYD7-T	MAXIM	获取价格	Low-Power Dual-/Triple-Voltage SC70 µ.P Supervisory Circuits
MAX6740XKS	MAXIM	获取价格	Low-Power Dual-/Triple-Voltage SC70 UP Supervisory Circuits
MAX6740XKSDD3+	MAXIM	获取价格	Power Supply Support Circuit, Adjustable, 3 Channel, BICMOS, PDSO5, SC-70, 5 PIN
MAX6740XKSDD3+T	MAXIM	获取价格	Power Supply Support Circuit, Adjustable, 1 Channel, +2.925VV, BICMOS, PDSO5, LEAD FREE, E

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