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MIC74BQS

更新时间： 2024-02-06 18:53:20

品牌	Logo	应用领域
麦瑞 - MICREL		风扇外围集成电路光电二极管控制器
页数	文件大小	规格书
20页	142K
描述
2-Wire Serial I/O Expander and Fan Controller Advance Information

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技术参数
数据手册

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MIC74BQS 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Transferred	零件包装代码：	SOIC
包装说明：	SSOP,	针数：	16
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.37
JESD-30 代码：	R-PDSO-G16	JESD-609代码：	e3
长度：	4.9 mm	湿度敏感等级：	1
I/O 线路数量：	8	端口数量：	1
端子数量：	16	最高工作温度：	85 °C
最低工作温度：	-40 °C	封装主体材料：	PLASTIC/EPOXY
封装代码：	SSOP	封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE, SHRINK PITCH	峰值回流温度（摄氏度）：	260
认证状态：	Not Qualified	座面最大高度：	1.75 mm
最大供电电压：	3.6 V	最小供电电压：	2.7 V
标称供电电压：	3.3 V	表面贴装：	YES
技术：	CMOS	温度等级：	INDUSTRIAL
端子面层：	Matte Tin (Sn)	端子形式：	GULL WING
端子节距：	0.635 mm	端子位置：	DUAL
处于峰值回流温度下的最长时间：	40	宽度：	3.9116 mm
uPs/uCs/外围集成电路类型：	PARALLEL IO PORT, GENERAL PURPOSE	Base Number Matches：	1

MIC74BQS 数据手册

MIC74

Micrel

MIC74

2-Wire Serial I/O Expander and Fan Controller

Advance Information

General Description

Features

The MIC74 is a fully programmable serial-to-parallel I/O

expander compatible with the SMBus™ (system manage-

ment bus) protocol. It acts as a “slave” on the bus, providing

eight independent I/O lines.

• Provides eight bits of general purpose I/O

• Built in fan speed control logic (optional)

• 2-wire SMBus™/I C™ compatible serial interface

plus interrupt output

• 2.7V to 3.6V operating voltage range

• 5V-tolerant I/O

• Low quiescent current: 2µA (typical)

• Bit-programmable I/O options:

input or output

push-pull or open-drain output

interrupt on input changes

• Outputs can directly drive LEDs (10mA I

• Up to 8 devices per bus

Each I/O bit can be individually programmed as an input or

output. If programmed as an output, each I/O bit can be

programmed as an open-drain or complementary push-pull

output. If desired, the four most significant I/O bits can be

programmed to implement fan speed control. An internal

clock generator and state machine eliminate the overhead

generally associated with “bit-banging” fan speed control.

)

Programming the device and reading/writing the I/O bits is

accomplishedusingseveninternalregisters.Allregisterscan

be read by the host. Output bits are capable of directly driving

high-current loads such as LEDs. A separate interrupt output

can notify the host of state changes on the input bits without

requiringtheMIC74toperformatransactionontheserialbus

or be polled by the host. Three address selection inputs are

provided, allowing up to eight devices to share the same bus

and provide a total of 64 bits of I/O.

Applications

• General purpose I/O expansion via serial bus

• Personal computer system management

• Distributed sensing and control

• Microcontroller I/O expansion

• Fan Control

The MIC74 is available in an ultra-small-footprint 16-lead

QSOP. Low quiescent current, small footprint, and low pack-

age height make the MIC74 ideal for portable and desktop

applications.

Ordering Information

Part Number

Temperature Range

Package

MIC74BQS

–40°C to +85°C

16-lead QSOP

Typical Application

3.0V

MIC74

LED1

VDD

/ALERT

DATA

CLK

ALERT

DATA

CLK

GND

LED8

Serial-Bus-Controlled LED Annunciator

SMBus™ is a trademark of Intel Corporation. I C™ is a trademark of Phillips Electronics N.V.

Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com

August 1, 2000

MIC74

12 3 4 5 6 7...20

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与MIC74BQS相关器件

型号	品牌	描述	获取价格	数据表
MIC74BQSTR	MICREL	Micro Peripheral IC, PDSO16	获取价格
MIC74YQS	MICREL	2-Wire Serial I/O Expander and Fan Controller	获取价格
MIC74YQSTR	MICREL	8 I/O, PIA-GENERAL PURPOSE, PDSO16, LEAD FREE, QSOP-16	获取价格
MIC-7500	ADVANTECH	Compact Fanless System with 6th Gen Intel Core i Processor	获取价格
MIC-7500B-19A1E	ADVANTECH	Compact Fanless System with 6th Gen Intel Core i Processor	获取价格
MIC-7500B-S9A1E	ADVANTECH	Compact Fanless System with 6th Gen Intel Core i Processor	获取价格

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