Datasheet > MAX6957_14

MAX6957_14

更新时间： 2024-09-16 01:18:55

品牌	Logo	应用领域
美信 - MAXIM		/
页数	文件大小	规格书
23页	1374K
描述
4-Wire-Interfaced, 2.5V to 5.5V, 20-Port and 28-Port LED Display Driver and I/O Expander

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MAX6957_14 数据手册

MAX6957

4-Wire-Interfaced, 2.5V to 5.5V, 20-Port and

28-Port LED Display Driver and I/O Expander

General Description

Features

The MAX6957 compact, serial-interfaced LED display

driver general-purpose I/O (GPIO) peripheral provides

microprocessors with up to 28 ports. Each port is indi-

vidually user configurable to either a logic input, logic

output, or common-anode (CA) LED constant-current

segment driver. Each port configured as an LED seg-

ment 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.

● High-Speed 26MHz SPI-/QSPI™-/MICROWIRE^®-

Compatible Serial Interface

● 2.5V to 5.5V Operation

● -40°C to +125°C Temperature Range

● 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

● 11µA (max) Shutdown Current

Each port configured as a GPIO can be either a push-

pull logic output capable of sinking 10mA and sourcing

4.5mA, or a Schmitt logic input with optional internal

pullup. Seven ports feature configurable transition

detection logic, which generates an interrupt upon

change of port logic level. The MAX6957 is controlled

through an SPI-compatible 4-wire serial interface.

● 16-Step Individually Programmable Current Control

for Each LED

● Logic Transition Detection for Seven I/O Ports

Ordering Information

PIN-

The MAX6957AAX and MAX6957ATL have 28 ports and

are available in 36-pin SSOP and 40-pin TQFN (6mm x

6mm) packages, respectively. The MAX6957AAI and

MAX6957ANI have 20 ports and are available in 28-pin

SSOP and 28-pin DIP packages, respectively.

PART

TEMP RANGE

PACKAGE

MAX6957ANI

MAX6957AAI

MAX6957AAX

MAX6957ATL

*Exposed pad.

-40°C to +125°C

28 DIP

28 SSOP

36 SSOP

40 TQFN-EP*

For a 2-wire interfaced version, refer to the MAX6956

data sheet.

For a lower cost pin-compatible port expander without

the constant-current LED drive capability, refer to the

MAX7301 data sheet.

Pin Conﬁgurations

TOP VIEW

ISET

GND

DOUT

P12

28 V+

27 CS

Applications

● Set-Top Boxes

● Panel Meters

● White Goods

● Bar Graph Displays

● Industrial Controllers

● System Monitoring

DIN

SCLK

24 P31

23 P30

22 P29

21 P28

20 P27

19 P26

18 P25

17 P24

16 P23

15 P22

P13

MAX6957

P14

P15

P16

P17 10

P18 11

P19 12

P20 13

P21 14

Typical operating Circuit appears at end of data sheet.

QSPI is a trademark of Motorola, Inc.

SSOP/DIP

MICROWIRE is a registered trademark of National

Semiconductor Corp.

Pin Configurations continued at end of data sheet.

19-2429; Rev 5; 7/14

12 3 4 5 6 7...23

中文翻译

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与MAX6957_14相关器件

型号	品牌	获取价格	描述	数据表
MAX6957AAI	MAXIM	获取价格	4-Wire-Interfaced, 2.5V to 5.5V, 20-Port and 28-Port LED Display Driver and I/O Expander
MAX6957AAI+	MAXIM	获取价格	LED Driver, 20-Segment, CMOS, PDSO28, 5.30 MM, MO-150, SSOP-28
MAX6957AAI+T	MAXIM	获取价格	LED Driver, 20-Segment, CMOS, PDSO28, 5.30 MM, MO-150, SSOP-28
MAX6957AAX	MAXIM	获取价格	4-Wire-Interfaced, 2.5V to 5.5V, 20-Port and 28-Port LED Display Driver and I/O Expander
MAX6957AAX/GG8	MAXIM	获取价格	LED Driver,
MAX6957AAX/GH9	MAXIM	获取价格	LED Driver, 28-Segment, CMOS, PDSO36, 0.80 MM PITCH, SSOP-36
MAX6957AAX+	MAXIM	获取价格	LED Driver, 28-Segment, CMOS, PDSO36, 0.80 MM PITCH, SSOP-36
MAX6957AAX-T	MAXIM	获取价格	LED Driver, 28-Segment, CMOS, PDSO36, 0.80 MM PITCH, SSOP-36
MAX6957AGL	MAXIM	获取价格	4-Wire-Interfaced, 2.5V to 5.5V, 20-Port and 28-Port LED Display Driver and I/O Expander
MAX6957AGL+	MAXIM	获取价格	Display Driver, 7-Segment, CMOS, PQCC40

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