MAX6956AAX/V+T

更新时间： 2024-11-09 13:11:03

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MAX6956AAX/V+T 数据手册

19-2414; Rev 2; 11/03

2-Wire-Interfaced, 2.5V to 5.5V, 20-Port or

28-Port LED Display Driver and I/O Expander

General Description

Features

o 400kbps I²C-Compatible Serial Interface

The MAX6956 compact, serial-interfaced LED display

driver/I/O expander provide microprocessors with up to

28 ports. Each port is individually user configurable to

either a logic input, logic output, or common-anode

(CA) LED constant-current segment driver. Each port

configured as an LED segment driver behaves as a

digitally controlled constant-current sink, with 16 equal

current steps from 1.5mA to 24mA. The LED drivers are

suitable for both discrete LEDs and CA numeric and

alphanumeric LED digits.

o 2.5V to 5.5V Operation

o -40°C to +125°C Temperature Range

o 20 or 28 I/O Ports, Each Configurable as

Constant-Current LED Driver

Push-Pull Logic Output

Schmitt Logic Input

Schmitt Logic Input with Internal Pullup

Each port configured as a general-purpose I/O (GPIO)

can be either a push-pull logic output capable of sink-

ing 10mA and sourcing 4.5mA, or a Schmitt logic input

with optional internal pullup. Seven ports feature config-

urable transition detection logic, which generates an

interrupt upon change of port logic level. The MAX6956

is controlled through an I²C™-compatible 2-wire serial

interface, and uses four-level logic to allow 16 I²C

addresses from only 2 select pins.

o 11µA (max) Shutdown Current

o 16-Step Individually Programmable Current

Control for Each LED

o Logic Transition Detection for Seven I/O Ports

Ordering Information

PART

TEMP RANGE

-40°C to +125°C

PIN-PACKAGE

28 DIP

The MAX6956AAX and MAX6956ATL have 28 ports

and are available in 36-pin SSOP and 40-pin thin QFN

packages, respectively. The MAX6956AAI and

MAX6956ANI have 20 ports and are available in 28-pin

SSOP and 28-pin DIP packages, respectively.

MAX6956ANI

MAX6956AAI

MAX6956AAX

MAX6956ATL

28 SSOP

36 SSOP

40 Thin QFN

For an SPI-interfaced version, refer to the MAX6957

data sheet. For a lower cost pin-compatible port

expander without the constant-current LED drive capa-

bility, refer to the MAX7300 data sheet.

Pin Configurations

TOP VIEW

Applications

ISET

GND

AD0

P12

P13

P14

P15

P16

28 V+

Set-Top Boxes

Panel Meters

White Goods

Automotive

Bar Graph Displays

Industrial Controllers

System Monitoring

27 AD1

26 SCL

25 SDA

24 P31

MAX6956

23 P30

22 P29

21 P28

20 P27

19 P26

18 P25

17 P24

16 P23

15 P22

Typical Operating Circuit appears at end of data sheet.

P17 10

P18 11

P19 12

P20 13

P21 14

Purchase of I²C components of Maxim Integrated Products, Inc.,

or one of its sublicensed Associated Companies, conveys a

license under the Philips I²C Patent Rights to use these compo-

nents in an I²C system, provided that the system conforms to the

I²C Standard Specification as defined by Philips.

SSOP/DIP

Pin Configurations continued at end of data sheet.

________________________________________________________________ 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...27

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MAX6956AAX/V+T 替代型号

型号	品牌	替代类型	描述	数据表
MAX7300AAX+T	MAXIM	类似代替	Interface Circuit, CMOS, PDSO36, 0.80 MM PITCH, SSOP-36
MAX7301AAX+	MAXIM	功能相似	4-Wire-Interfaced, 2.5V to 5.5V, 20-Port and 28-Port I/O Expander

与MAX6956AAX/V+T相关器件

型号	品牌	获取价格	描述	数据表
MAX6956AAX+	MAXIM	获取价格	Interface Circuit, CMOS, PDSO36, ROHS COMPLIANT, SSOP-36
MAX6956AAX+T	MAXIM	获取价格	Interface Circuit, CMOS, PDSO36, 0.300 INCH, 0.80 MM PITCH, SSOP-36
MAX6956AAX-T	MAXIM	获取价格	Interface Circuit, CMOS, PDSO36, SSOP-36
MAX6956ANI	MAXIM	获取价格	2-Wire-Interfaced, 2.5V to 5.5V, 20-Port or 28-Port LED Display Driver and I/O Expander
MAX6956ANI+	MAXIM	获取价格	Interface Circuit, CMOS, PDIP28, ROHS COMPLIANT, PLASTIC, DIP-28
MAX6956ATL	MAXIM	获取价格	2-Wire-Interfaced, 2.5V to 5.5V, 20-Port or 28-Port LED Display Driver and I/O Expander
MAX6956ATL/V+	MAXIM	获取价格	Interface Circuit, CMOS, ROHS COMPLIANT, TQFN-40
MAX6956ATL/V+T	MAXIM	获取价格	Interface Circuit, CMOS, ROHS COMPLIANT, TQFN-40
MAX6956ATL+	MAXIM	获取价格	Interface Circuit, CMOS, ROHS COMPLIANT, TQFN-40
MAX6956ATL+GH7	MAXIM	获取价格	Interface Circuit, CMOS, ROHS COMPLIANT, TQFN-40

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