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参数资料
| 型号： | MAX7347ATE+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/29页 |
| 文件大小： | 0K |
| 描述： | IC CNTRL SW SOUND 16-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 应用： | 声卡，播放器，记录器 |
| 接口： | I²C |
| 电源电压： | 2.4 V ~ 3.6 V |
| 封装/外壳： | 16-WQFN 裸露焊盘 |
| 供应商设备封装： | 16-TQFN-EP（4x4） |
| 包装： | 带卷 (TR) |
| 安装类型： | 表面贴装 |
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General Description
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.
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.
The MAX7348/MAX7349 feature a tone generator to
generate automatic key-click sounds or alarm tones
under processor control.
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.
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.
Applications
Medical Instruments
Instrumentation Panels
Security and Access
Industrial Controls
Features
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
to 40ms
Key Autorepeat Rate and Delay User Configurable
Low-EMI Design Uses Static Matrix Monitoring
Hardware Interrupt on Each Debounced Event or
FIFO Level, or at End of Definable Time Period
Up to Six Open-Drain Logic Outputs Available
Capable of Driving LEDs
Sounder Output Generates Automatic Key Clicks
14 Programmable Musical Sounder Frequencies
Continuous or Programmable Sounder Duration
Easy Automatic Single-Tone and Dual-Tone Alarm
Sound Generation
Four I2C Address Choices
Selectable 2-Wire Serial Bus Timeout
Under 10A Shutdown Current
MAX7347/MAX7348/MAX7349
2-Wire Interfaced Low-EMI Key Switch
and Sounder Controllers
________________________________________________________________
Maxim Integrated Products
1
Ordering Information
19-3556; Rev 5; 5/07
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.
EVALUATION
KIT
AVAILABLE
PART
TEMP RANGE
PIN-
PACKAGE
PKG
CODE
MAX7347AEE+
-40
°C to +125°C 16 QSOP
E16-4
MAX7347ATE+
-40
°C to +125°C 16 TQFN-EP*
T1644-4
MAX7348AEP+
-40
°C to +125°C 20 QSOP
E20-1
MAX7349AEG+
-40
°C to +125°C 24 QSOP
E24-1
MAX7349ATG+
-40
°C to +125°C 24 TQFN-EP*
T2444-4
+
Denotes lead-free package.
*
EP = Exposed paddle.
MAX7349
V+
COL_
SOUNDER
GND
8
SCL
SDA
AD0
ALERT
ROW_
8
PIEZO
TRANSDUCER
SWITCH
ARRAY, UP
TO 64
SWITCHES
INPUT
2.4V TO 3.6V
INT
Typical Application Circuit
Pin Configurations appear at end of data sheet.
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| VE-B6X-IW-F1 | CONVERTER MOD DC/DC 5.2V 100W |
| MAX7349ATG+T | IC CNTRL SW SOUND 24-TQFN |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX7348 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:2-Wire Interfaced Low-EMI Key Switch and Sounder Controllers |
| MAX7348AEP | 功能描述:外围驱动器与原件 - PCI Low-EMI Key Switch & Sounder Controller RoHS:否 制造商:PLX Technology 工作电源电压: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:FCBGA-1156 封装:Tray |
| MAX7348AEP+ | 功能描述:外围驱动器与原件 - PCI Low-EMI Key Switch & Sounder Controller RoHS:否 制造商:PLX Technology 工作电源电压: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:FCBGA-1156 封装:Tray |
| MAX7348AEP+T | 功能描述:外围驱动器与原件 - PCI Low-EMI Key Switch & Sounder Controller RoHS:否 制造商:PLX Technology 工作电源电压: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:FCBGA-1156 封装:Tray |
| MAX7348AEP-T | 功能描述:外围驱动器与原件 - PCI Low-EMI Key Switch & Sounder Controller RoHS:否 制造商:PLX Technology 工作电源电压: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:FCBGA-1156 封装:Tray |
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