Datasheet > 微控制器和处理器 > 其他 uPs/uCs/外围集成电路> MAX7349AWG

MAX7349AWG

更新时间： 2024-01-06 06:27:28

品牌	Logo	应用领域
美信 - MAXIM		开关控制器
页数	文件大小	规格书
29页	348K
描述
Microprocessor Circuit, BICMOS, PDSO24, 0.300 INCH, MS-013AD, SOIC-24

阅读下载

获取价格

技术参数
数据手册

如果您发现信息不准确，欢迎纠错

MAX7349AWG 技术参数

是否Rohs认证：	不符合	生命周期：	Active
Reach Compliance Code：	not_compliant	风险等级：	5.88
JESD-30 代码：	R-PDSO-G24	JESD-609代码：	e0
端子数量：	24	最高工作温度：	125 °C
最低工作温度：	-40 °C	封装主体材料：	PLASTIC/EPOXY
封装代码：	SOP	封装等效代码：	SOP24,.4
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE
电源：	2.5/3.3 V	认证状态：	Not Qualified
子类别：	Parallel IO Port	最大压摆率：	0.1 mA
表面贴装：	YES	技术：	BICMOS
温度等级：	AUTOMOTIVE	端子面层：	Tin/Lead (Sn/Pb)
端子形式：	GULL WING	端子节距：	1.27 mm
端子位置：	DUAL	Base Number Matches：	1

MAX7349AWG 数据手册

19-3556; Rev 5; 5/07

2-Wire Interfaced Low-EMI Key Switch

and Sounder Controllers

8/MAX7349

General Description

Features

The MAX7347/MAX7348/MAX7349 I²C interfaced periph-

erals provide microprocessors with management of up to

64 key switches. Key inputs are monitored statically, not

dynamically scanned, to ensure low-EMI operation. The

MAX7347 can monitor up to 24 switches, the MAX7348

can monitor up to 40 switches, and the MAX7349 can

monitor up to 64 switches. The switches can be metallic

or resistive (carbon) up to 1kΩ.

♦ 400kbps, 5.5V-Tolerant 2-Wire Serial Interface

♦ 2.4V to 3.6V Operation

♦ Monitor Up to 64 Keys (MAX7349),

40 Keys (MAX7348), or 24 Keys (MAX7347)

♦ FIFO Queues Up to 8 Debounced Key Events

♦ Key Debounce Time User Configurable from 9ms

The key controller debounces and maintains a FIFO of

key-press events (including autorepeat, if enabled). An

interrupt (INT) output can be configured to alert key

presses either as they occur, or at maximum rate.

to 40ms

♦ Key Autorepeat Rate and Delay User Configurable

♦ Low-EMI Design Uses Static Matrix Monitoring

The MAX7348/MAX7349 feature a tone generator to

generate automatic key-click sounds or alarm tones

under processor control.

♦ Hardware Interrupt on Each Debounced Event or

FIFO Level, or at End of Definable Time Period

♦ Up to Six Open-Drain Logic Outputs Available

The sounder frequencies cover the 5th musical octave

(523.25Hz to 987.77Hz), plus seven other musical

notes up to 2637Hz. The output can also be pro-

grammed to be high or low for the sound duration to

operate an electronic sounder, relay, or lamp.

Capable of Driving LEDs

♦ Sounder Output Generates Automatic Key Clicks

♦ 14 Programmable Musical Sounder Frequencies

♦ Continuous or Programmable Sounder Duration

The MAX7347 is offered in 16-pin QSOP and TQFN

packages. The MAX7348 is offered in a 20-pin QSOP

package. The MAX7349 is available in 24-pin QSOP and

TQFN packages. The MAX7347/MAX7348/MAX7349

operate over the -40°C to +125°C temperature range.

♦ Easy Automatic Single-Tone and Dual-Tone Alarm

Sound Generation

♦ Four I²C Address Choices

♦ Selectable 2-Wire Serial Bus Timeout

Applications

♦ Under 10µA Shutdown Current

Medical Instruments

Instrumentation Panels

Security and Access

Industrial Controls

Ordering Information

PKG

PIN-

PACKAGE

PART

TEMP RANGE

CODE

Pin Configurations appear at end of data sheet.

E16-4

T1644-4

E20-1

MAX7347AEE+ -40°C to +125°C 16 QSOP

MAX7347ATE+ -40°C to +125°C 16 TQFN-EP*

MAX7348AEP+ -40°C to +125°C 20 QSOP

MAX7349AEG+ -40°C to +125°C 24 QSOP

MAX7349ATG+ -40°C to +125°C 24 TQFN-EP*

Typical Application Circuit

INPUT

2.4V TO 3.6V

E24-1

MAX7349

V+

COL_

SWITCH

ARRAY, UP

TO 64

T2444-4

+Denotes lead-free package.

*EP = Exposed paddle.

SWITCHES

ROW_

SCL

SDA

ALERT

INT

PIEZO

TRANSDUCER

AD0

GND

SOUNDER

________________________________________________________________ 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...29

下载PDF

与MAX7349AWG相关器件

型号	品牌	描述	获取价格	数据表
MAX7349EVKIT	MAXIM	Proven PC Board Layout	获取价格
MAX734C/D	MAXIM	+12V, 120mA Flash Memory Programming Supply	获取价格
MAX734CPA	MAXIM	+12V, 120mA Flash Memory Programming Supply	获取价格
MAX734CSA	MAXIM	+12V, 120mA Flash Memory Programming Supply	获取价格
MAX734CSA+	MAXIM	Switching Regulator, Current-mode, 1.5A, 170kHz Switching Freq-Max, CMOS, PDSO8, PLASTIC,	获取价格
MAX734CSA+C2A	MAXIM	Switching Regulator, Current-mode, 1.5A, PDSO8, SOP-8	获取价格

产品中心

服务支持

精选活动

关于我们

帮助中心

MAX7349AWG

MAX7349AWG 技术参数

MAX7349AWG 数据手册

与MAX7349AWG相关器件

与MAX7349AWG相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

MAX7349AWG

MAX7349AWG 技术参数

MAX7349AWG 数据手册

与MAX7349AWG相关器件

与MAX7349AWG相关文章

您还可以找

您在本页遇到什么问题？