MAX6646MUA

更新时间： 2024-11-05 22:20:55

品牌	Logo	应用领域
美信 - MAXIM		传感器
页数	文件大小	规格书
16页	226K
描述
+145∑C Precision SMBus-Compatible Remote/ Local Sensors with Overtemperature Alarms

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MAX6646MUA 技术参数

是否无铅：	含铅	是否Rohs认证：	不符合
生命周期：	Obsolete	零件包装代码：	TSSOP
包装说明：	3 X 3 MM, MO-187CAA, MICRO, SOP-8	针数：	8
Reach Compliance Code：	not_compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	Factory Lead Time：	1 week
风险等级：	5.02	模拟集成电路 - 其他类型：	ANALOG CIRCUIT
JESD-30 代码：	S-PDSO-G8	JESD-609代码：	e0
长度：	3 mm	湿度敏感等级：	1
功能数量：	1	端子数量：	8
最高工作温度：	125 °C	最低工作温度：	-55 °C
封装主体材料：	PLASTIC/EPOXY	封装代码：	TSSOP
封装形状：	SQUARE	封装形式：	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）：	245	认证状态：	Not Qualified
座面最大高度：	1.1 mm	最大供电电压 (Vsup)：	5.5 V
最小供电电压 (Vsup)：	3 V	标称供电电压 (Vsup)：	3.3 V
表面贴装：	YES	技术：	BICMOS
温度等级：	MILITARY	端子面层：	Tin/Lead (Sn/Pb)
端子形式：	GULL WING	端子节距：	0.65 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	NOT SPECIFIED
宽度：	3 mm	Base Number Matches：	1

MAX6646MUA 数据手册

19-2540; Rev 1; 7/03

+145°C Precision SMBus-Compatible Remote/

Local Sensors with Overtemperature Alarms

General Description

Features

The MAX6646/MAX6647/MAX6649 are precise, two-

channel digital temperature sensors. The devices accu-

rately measure the temperature of their own die and a

remote PN junction, and report the temperature in digital

form using a 2-wire serial interface. The remote PN junc-

tion is typically the emitter-base junction of a common-

collector PNP on a CPU, FPGA, or ASIC.

ꢀ Dual Channel: Measures Remote and Local

Temperature

ꢀ 0.125°C Resolution

ꢀ High Accuracy 1°C ꢀmaꢁx ꢂrom ꢃ+0°C to ꢃ1ꢄ5°C

ꢀRemotex, and 2°C ꢀmaꢁx ꢂrom ꢃ+0°C to ꢃ100°C

ꢀLocalx

The 2-wire serial interface accepts standard system man-

agement bus (SMBus) write byte, read byte, send byte,

and receive byte commands to read the temperature

data and to program the alarm thresholds. To enhance

system reliability, the MAX6646/MAX6647/MAX6649

include an SMBus timeout. A fault queue prevents the

ALERT and OVERT outputs from setting until a fault has

been detected one, two, or three consecutive times

(programmable).

ꢀ Measures High-Ideality Thermal Diodes Up to

ꢃ170°C ꢀApparentx

ꢃ1ꢄ5°C ꢀRealx

ꢀ Two Alarm Outputs: ALERT and OVERT

ꢀ Programmable Under/Overtemperature Alarm

Temperature Thresholds

ꢀ Programmable Conversion Rate

ꢀ SMBus-Compatible Interꢂace

ꢀ SMBus Timeout

The MAX6646/MAX6647/MAX6649 provide two system

alarms: ALERT and OVERT. ALERT asserts when any of

four temperature conditions are violated: local overtem-

perature, remote overtemperature, local undertempera-

ture, or remote undertemperature. OVERT asserts when

the temperature rises above the value in either of the two

OVERT limit registers. The OVERT output can be used to

activate a cooling fan, or to trigger a system shutdown.

Ordering Information

PIN-

MEASURED

PART

TEMP RANGE

PACKAGE TEMP RANGE

Measurements can be done autonomously, at the pro-

grammed conversion rate, or in a single-shot mode. The

adjustable conversion rate allows optimizing supply cur-

rent and temperature update rate to match system needs.

MAX6646MUA -551C to +1251C 8 µMAX

MAX6647MUA -551C to +1251C 8 µMAX

MAX6649MUA -551C to +1251C 8 µMAX

01C to +1451C

Remote accuracy is ±±1C maꢀimum error between ꢁ6ꢂ1C

and ꢁ±451C with no calibration needed. The

MAX6646/MAX6647/MAX6649 operate from -551C to

ꢁ±251C, and measure temperatures between ꢂ1C and

ꢁ±451C. The MAX6646/MAX6647/MAX6649 are available

in an 8-pin µMAX package.

Typical Operating Circuit

3.3V

Applications

0.1µF

200Ω

Graphics Processors

Desktop Computers

Notebook Computers

Servers

10kΩ EACH

MAX6646

MAX6647

MAX6649

DXP

DATA

SDA

CLOCK

SCLK

ALERT

INTERRUPT TO µP

Thin Clients

DXN

2200pF

OVERT

TO FAN DRIVER OR

SYSTEM SHUTDOWN

Workstations

GND

µP

Test and Measurement

Multichip Modules

Selector Guide, Pin Configurations, and Functional Diagram

appear at end of data sheet.

________________________________________________________________ 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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MAX6646MUA 替代型号

型号	品牌	替代类型	描述	数据表
MAX6646MUA+T	MAXIM	功能相似	Analog Circuit, 1 Func, BICMOS, PDSO8, 3 X 3 MM, ROHS COMPLIANT, MO-187CAA, MICRO, SOP-8
MAX6646YMUA+T	MAXIM	功能相似	Analog Circuit, 1 Func, BICMOS, PDSO8, 3 X 3 MM, ROHS COMPLIANT, MO-187CAA, MICRO, SOP-8
MAX6646MUA+	MAXIM	功能相似	145Â°C Precision SMBus-Compatible Remote/ Loc

与MAX6646MUA相关器件

型号	品牌	获取价格	描述	数据表
MAX6646MUA+	MAXIM	获取价格	145Â°C Precision SMBus-Compatible Remote/ Loc
MAX6646MUA+T	MAXIM	获取价格	Analog Circuit, 1 Func, BICMOS, PDSO8, 3 X 3 MM, ROHS COMPLIANT, MO-187CAA, MICRO, SOP-8
MAX6646YMUA+T	MAXIM	获取价格	Analog Circuit, 1 Func, BICMOS, PDSO8, 3 X 3 MM, ROHS COMPLIANT, MO-187CAA, MICRO, SOP-8
MAX6647	MAXIM	获取价格	+145∑C Precision SMBus-Compatible Remote/ Loc
MAX6647	ADI	获取价格	+145°C、高精度、SMBus兼容、远端/本地传感器，带有过温报警
MAX6647MUA	MAXIM	获取价格	+145∑C Precision SMBus-Compatible Remote/ Loc
MAX6647MUA+	MAXIM	获取价格	145Â°C Precision SMBus-Compatible Remote/ Loc
MAX6647MUA-T	MAXIM	获取价格	Analog Circuit, 1 Func, BICMOS, PDSO8, 3 X 3 MM, MO-187CAA, MICRO, SOP-8
MAX6647YMUA+	MAXIM	获取价格	Analog Circuit, 1 Func, BICMOS, ROHS COMPLIANT, MO-187C-AA, MICRO MAX PACKAGE-8
MAX6647YMUA+T	MAXIM	获取价格	Analog Circuit, 1 Func, BICMOS, ROHS COMPLIANT, MO-187C-AA, MICRO MAX PACKAGE-8

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