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MAX6958

更新时间： 2024-11-05 22:55:15
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美信 - MAXIM 显示驱动器
页数 文件大小 规格书
19页 270K
描述
2-Wire Interfaced, 3V to 5.5V, 4-Digit, 9-Segment LED Display Drivers with Keyscan

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MAX6958 数据手册

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19-2634; Rev 0; 10/02  
2-Wire Interfaced, 3V to 5.5V, 4-Digit,  
9-Segment LED Display Drivers with Keyscan  
General Description  
Features  
o 400kbps 2-Wire Serial Interface  
o 3V to 5.5V Operation  
The MAX6958/MAX6959 compact multiplexed com-  
mon-cathode display drivers interface microprocessors  
to seven-segment numeric LED digits, or discrete LEDs  
through an SMBus™- and I2C-compatible 2-wire serial  
interface. The 2-wire serial interface uses fixed  
0.8V/2.1V logic thresholds for compatibility with 2.5V  
and 3.3V systems when the display driver is powered  
from a 5V supply.  
o Drive 4 Digits plus 4 or 8 Discrete LEDs  
o Drive Common-Cathode LED Digits  
o 23mA Constant-Current LED Segment Drive  
o Hexadecimal Decode/No-Decode Digit Selection  
o 64-Step Digital Brightness Control  
The MAX6958/MAX6959 drive up to four 7-segment  
digits, with decimal points, plus four discrete LEDs, or  
four 7-segment digits and eight discrete LEDs if the  
digits’ decimal points are not used, or up to 36 discrete  
LEDs. The MAX6959 also includes two input ports, one  
or both of which may be configured as a key-switch  
reader, which automatically scans and debounces a  
matrix of up to eight switches. Key-switch status is  
obtained by polling internal status registers or by con-  
figuring the MAX6959 interrupt output.  
o Slew-Rate-Limited Segment Drivers Reduced EMI  
o Debounces Up to Eight Switches with n-Key  
Rollover (MAX6959 Only)  
o IRQ Output When a Key Input Is Debounced  
(MAX6959 Only)  
o 20µA Low-Power Shutdown (Data Retained)  
o Automotive Temperature Range (-40°C to +125°C)  
o Compact 16-Pin PDIP and QSOP Packages  
Other on-chip features include a hexadecimal font for  
seven-segment displays, multiplex scan circuitry,  
anode and cathode drivers, and static RAM that stores  
each digit. The peak segment current for the display  
digits is set internally to 23mA. Display intensity is  
adjusted using a 64-step internal digital brightness con-  
trol. The MAX6958/MAX6959 include a low-power shut-  
down mode, a scan-limit register that allows the user to  
display from one to four digits, and a test mode, which  
forces all LEDs on. The LED drivers are slew-rate-limit-  
ed to reduce EMI.  
Ordering Information  
TEMP  
SLAVE  
PIN-  
PART  
RANGE  
ADDRESS PACKAGE  
MAX6958AAEE -40°C to +125°C 0111000 16 QSOP-EP*  
MAX6958AAPE -40°C to +125°C 0111000 16 DIP  
Ordering Information continued at end of data sheet.  
*EP = Exposed pad.  
Typical Operating Circuit  
The MAX6958/MAX6959 are available in 16-pin PDIP  
and QSOP packages and are fully specified over the  
-40°C to +125°C automotive temperature range.  
8
8
8
8
µC  
8
DIG0–DIG3  
SEG0–SEG8  
SDA  
SCL  
IRQ  
SDA  
SCL  
Applications  
5V  
V+  
IRQ/SEG9  
Set-Top Boxes  
Panel Meters  
White Goods  
Audio/Video Equipment  
Vending Machines  
Industrial Controls  
MAX6959  
INPUT1  
INPUT2  
GND  
Key0  
DIG0/SEG0  
DIG1/SEG1  
DIG2/SEG2  
DIG3/SEG3  
DIG4/SEG4  
DIG5/SEG5  
DIG6/SEG6  
DIG7/SEG7  
Key1  
Key2  
Key3  
Key4  
Key5  
Key6  
Key7  
Pin Configuration, Functional Diagram, and Typical  
Application Circuit appear at end of data sheet.  
SMBus is a trademark of Intel Corp.  
________________________________________________________________ Maxim Integrated Products  
1
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.  
1234567...19

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与MAX6958相关器件

型号 品牌 获取价格 描述 数据表
MAX6958AAEE MAXIM

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 		2-Wire Interfaced, 3V to 5.5V, 4-Digit, 9-Segment LED Display Drivers with Keyscan
MAX6958AAEE+ MAXIM

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 		LED Driver, 9-Segment, CMOS, PDSO16, 0.150 INCH, EXPOSED PAD, QSOP-16
MAX6958AAEE+T MAXIM

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 		LED Driver, 9-Segment, CMOS, PDSO16, 0.150 INCH, EXPOSED PAD, QSOP-16
MAX6958AAEE-T MAXIM

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 		LED Driver, 9-Segment, CMOS, PDSO16, 0.150 INCH, EXPOSED PAD, QSOP-16
MAX6958AAPE MAXIM

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 		2-Wire Interfaced, 3V to 5.5V, 4-Digit, 9-Segment LED Display Drivers with Keyscan
MAX6958BAEE MAXIM

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 		2-Wire Interfaced, 3V to 5.5V, 4-Digit, 9-Segment LED Display Drivers with Keyscan
MAX6958BAEE+ MAXIM

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 		LED Driver, 9-Segment, CMOS, PDSO16, 0.150 INCH, EXPOSED PAD, QSOP-16
MAX6958BAEE+T MAXIM

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 		LED Driver, 9-Segment, CMOS, PDSO16, 0.150 INCH, EXPOSED PAD, QSOP-16
MAX6958BAEE-T MAXIM

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 		LED Driver, 9-Segment, CMOS, PDSO16, 0.150 INCH, EXPOSED PAD, QSOP-16
MAX6958BAPE MAXIM

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 		2-Wire Interfaced, 3V to 5.5V, 4-Digit, 9-Segment LED Display Drivers with Keyscan

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