Datasheet > MAX7387_06

MAX7387_06

更新时间： 2024-09-19 11:14:55

品牌	Logo	应用领域
美信 - MAXIM		振荡器监控
页数	文件大小	规格书
12页	599K
描述
System Monitoring Oscillator with Watchdog and Power Fail

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MAX7387_06 数据手册

19-3896; Rev 1; 1/06

System Monitoring Oscillator with

Watchdog and Power Fail

General Description

Features

The MAX7387/MAX7388 replace ceramic resonators,

crystals, and supervisory functions for microcontrollers

in 3.3V and 5V applications.

♦ Robust Microcontroller Clock and Supervisor in a

Single Package

♦ Integrated Reset, Watchdog, and Power-Fail

The MAX7387/MAX7388 provide a clock source together

with integrated reset, watchdog, and power-fail func-

tions. The watchdog timer is pin programmable and

provides watchdog timeout values in the 16ms to

2048ms range. The power-fail output provides early

warning of power failure. The power-fail threshold on the

MAX7388 is internally set. The MAX7387 also provides

a separate watchdog output that is used as a status

indicator or to control safety-critical system elements.

Functions

♦ Pin-Programmable Watchdog Timeout

♦ +2.7V to +5.5V Operation

♦ Factory-Trimmed Oscillator

♦ Reset Valid Down to 1.1V Supply Voltage

♦ ±1ꢀmꢁ Clock-Output Drive Current

♦ ±±4 Total ꢁccuracy ꢂor -±ꢀ0C to +1250C

♦ ±2.754 Total ꢁccuracy ꢂor ꢀ0C to +ꢃ50C

♦ -±ꢀ0C to +1250C Temperature Range

The MAX7387/MAX7388 clock outputs are factory pro-

grammed to a frequency in the 1MHz to 16MHz range.

Four standard frequencies are available. Other frequen-

cies are available upon request. The maximum operating

supply current is 5.5mA (max) with a clock frequency of

12MHz.

♦ ꢃ- and 1ꢀ-Pin µMꢁX Surꢂace-Mount Packages

♦ 5.5mꢁ Operating Current (12MHz)

Unlike typical crystal and ceramic resonator oscillator

circuits, the MAX7387/MAX7388 are resistant to EMI

and vibration, and operate reliably at high tempera-

tures. The high-output drive current and absence of

high-impedance nodes make the oscillator invulnerable

to dirty or humid operating conditions.

♦ 1MHz to 16MHz Factory Preset Frequency

Ordering Information

PꢁRT

TEMP RꢁNGE PIN-PꢁCKꢁGE PKG CODE

MꢁX73ꢃ7srff -40^oC to +125^oC 10 µMAX

MꢁX73ꢃꢃsrff -40^oC to +125^oC 8 µMAX

U10-2

U8-1

The MAX7387/MAX7388 are available in 10-pin and 8-pin

µMAX^®packages, respectively. The MAX7387/MAX7388

standard operating temperature range is from -40°C to

+125°C.

Note: “s” is a placeholder for the reset output type. Insert the

symbol found in Table 3 in the place of “s.” “r” is a placeholder

for the power-on reset (POR) voltage. Insert the symbol found in

Table 2 in the place of “r.” “ff” is a placeholder for the nominal

output frequency. Insert the symbol found in Table 4 in the

place of “ff.” For example, MAX7387CMTP describes a device

with 4.38V reset level, open-collector RST output, and a clock

output frequency of 8MHz.

Applications

White Goods

Automotive

Handheld Products

Portable Equipment

Appliances and Controls Microcontroller Systems

Typical Application Circuit, Functional Diagram, and Selector

Guide appear at end of data sheet.

µMAX is a registered trademark of Maxim Integrated Products, Inc.

Pin Configurations

TOP VIEW

PFI

10 CLOCK

CLOCK

RST/RST

WDI

RST/RST

WDI

WDS1

WDS2

GND

MAX7387

MAX7388

WDS1

WDS2

GND

PFO

WDO

µMꢁX

________________________________________________________________ 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...12

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与MAX7387_06相关器件

型号	品牌	获取价格	描述	数据表
MAX7387AJVB	MAXIM	获取价格	Power Supply Management Circuit, Fixed, 1 Channel, BICMOS, PDSO10, 3 X 3 MM, MO-187CBA, MI
MAX7387AQTP	MAXIM	获取价格	Power Supply Management Circuit, Fixed, 1 Channel, BICMOS, PDSO10, 3 X 3 MM, MO-187CBA, MI
MAX7387AQVB	MAXIM	获取价格	Power Supply Management Circuit, Fixed, 1 Channel, BICMOS, PDSO10, 3 X 3 MM, MO-187CBA, MI
MAX7387AVWB	MAXIM	获取价格	Power Supply Management Circuit, Fixed, 1 Channel, BICMOS, PDSO10, 3 X 3 MM, MO-187CBA, MI
MAX7387AXRD	MAXIM	获取价格	Power Supply Management Circuit, Fixed, 1 Channel, BICMOS, PDSO10, 3 X 3 MM, MO-187CBA, MI
MAX7387AXTP	MAXIM	获取价格	Power Supply Management Circuit, Fixed, 1 Channel, BICMOS, PDSO10, 3 X 3 MM, MO-187CBA, MI
MAX7387AXVB	MAXIM	获取价格	Power Supply Management Circuit, Fixed, 1 Channel, BICMOS, PDSO10, 3 X 3 MM, MO-187CBA, MI
MAX7387AXWB	MAXIM	获取价格	Power Supply Management Circuit, Fixed, 1 Channel, BICMOS, PDSO10, 3 X 3 MM, MO-187CBA, MI
MAX7387BXTP	MAXIM	获取价格	Power Supply Management Circuit, Fixed, 1 Channel, BICMOS, PDSO10, 3 X 3 MM, MO-187CBA, MI
MAX7387CJRD	MAXIM	获取价格	暂无描述

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