Datasheet > MAX6958

MAX6958

更新时间： 2024-11-07 14:57:55

品牌	Logo	应用领域
亚德诺 - ADI		驱动显示驱动器
页数	文件大小	规格书
19页	679K
描述
2线接口、3V至5.5V、4位、9段LED显示驱动器，带有键扫描

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数据手册

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MAX6958 数据手册

19-2634; Rev 1; 11/05

2-Wire Interfaced, 3V to 5.5V, 4-Digit,

9-Segment LED Display Drivers with Keyscan

General Description

Features

♦ 400kbps 2-Wire Serial Interface

♦ 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.

♦ Drive 4 Digits plus 4 or 8 Discrete LEDs

♦ Drive Common-Cathode LED Digits

♦ 23mA Constant-Current LED Segment Drive

♦ Hexadecimal Decode/No-Decode Digit Selection

♦ 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.

♦ Slew-Rate-Limited Segment Drivers Reduced EMI

♦ Debounces Up to Eight Switches with n-Key

Rollover (MAX6959 Only)

♦ IRQ Output When a Key Input Is Debounced

(MAX6959 Only)

♦ 20µA Low-Power Shutdown (Data Retained)

♦ Automotive Temperature Range (-40°C to +125°C)

♦ Compact 16-Pin PDIP and QSOP Packages

Ordering Information

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.

TEMP

SLAVE

PIN-

PKG

PART

RANGE ADDRESS PACKAGE CODE

-40°C to

+125°C

MAX6958AAEE

MAX6958AAPE

0111000 16 QSOP

E16-1

P16-1

-40°C to

+125°C

0111000 16 DIP

Ordering Information continued at end of data sheet.

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.

µC

DIG0–DIG3

SEG0–SEG8

SDA

SCL

IRQ

SDA

SCL

Applications

Set-Top Boxes

Panel Meters

White Goods

Audio/Video Equipment

Vending Machines

Industrial Controls

IRQ/SEG9

V+

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

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...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	获取价格	2-Wire Interfaced, 3V to 5.5V, 4-Digit, 9-Segment LED Display Drivers with Keyscan
MAX6958AAEE+	MAXIM	获取价格	LED Driver, 9-Segment, CMOS, PDSO16, 0.150 INCH, EXPOSED PAD, QSOP-16
MAX6958AAEE+T	MAXIM	获取价格	LED Driver, 9-Segment, CMOS, PDSO16, 0.150 INCH, EXPOSED PAD, QSOP-16
MAX6958AAEE-T	MAXIM	获取价格	LED Driver, 9-Segment, CMOS, PDSO16, 0.150 INCH, EXPOSED PAD, QSOP-16
MAX6958AAPE	MAXIM	获取价格	2-Wire Interfaced, 3V to 5.5V, 4-Digit, 9-Segment LED Display Drivers with Keyscan
MAX6958BAEE	MAXIM	获取价格	2-Wire Interfaced, 3V to 5.5V, 4-Digit, 9-Segment LED Display Drivers with Keyscan
MAX6958BAEE+	MAXIM	获取价格	LED Driver, 9-Segment, CMOS, PDSO16, 0.150 INCH, EXPOSED PAD, QSOP-16
MAX6958BAEE+T	MAXIM	获取价格	LED Driver, 9-Segment, CMOS, PDSO16, 0.150 INCH, EXPOSED PAD, QSOP-16
MAX6958BAEE-T	MAXIM	获取价格	LED Driver, 9-Segment, CMOS, PDSO16, 0.150 INCH, EXPOSED PAD, QSOP-16
MAX6958BAPE	MAXIM	获取价格	2-Wire Interfaced, 3V to 5.5V, 4-Digit, 9-Segment LED Display Drivers with Keyscan

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