MAX6957AAI

更新时间： 2024-11-08 22:55:15

品牌	Logo	应用领域
美信 - MAXIM		显示驱动器
页数	文件大小	规格书
23页	333K
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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替代型号

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MAX6957AAI 数据手册

19-2429; Rev 0; 4/02

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.

o High-Speed 26MHz SPI-/QSPI-™/MICROWIRE™-

Compatible Serial Interface

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 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.

o 11µA (max) Shutdown Current

o 16-Step Individually Programmable Current

Control for Each LED

o Logic Transition Detection for Seven I/O Ports

The MAX6957AAX and MAX6957AGL have 28 ports and

are available in 36-pin SSOP and 40-pin QFN packages,

respectively. The MAX6957AAI and MAX6957ANI have

20 ports and are available in 28-pin SSOP and 28-pin DIP

packages, respectively.

Ordering Information

PART

TEMP RANGE

-40°C to +125°C

PIN-PACKAGE

28 DIP

MAX6957ANI

MAX6957AAI

MAX6957AAX

MAX6957AGL*

28 SSOP

36 SSOP

40 QFN

Applications

Set-Top Boxes

Panel Meters

*Future product—contact factory for availability.

Pin Configurations

White Goods

TOP VIEW

Automotive

Bar Graph Displays

Industrial Controllers

System Monitoring

ISET

GND

DOUT

P12

28 V+

27 CS

DIN

SCLK

24 P31

23 P30

22 P29

21 P28

20 P27

19 P26

18 P25

17 P24

16 P23

15 P22

P13

P14

MAX6957

Typical Operating Circuit appears at end of data sheet.

P15

P16

P17 10

P18 11

P19 12

P20 13

P21 14

SPI and QSPI are trademarks of Motorola, Inc.

MICROWIRE is a trademark of National Semiconductor Corp.

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...23

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MAX6957AAI 替代型号

型号	品牌	替代类型	描述	数据表
MAX6957AAI+T	MAXIM	功能相似	LED Driver, 20-Segment, CMOS, PDSO28, 5.30 MM, MO-150, SSOP-28
MAX6957AAI+	MAXIM	功能相似	LED Driver, 20-Segment, CMOS, PDSO28, 5.30 MM, MO-150, SSOP-28

与MAX6957AAI相关器件

型号	品牌	获取价格	描述	数据表
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
MAX6957AGL-T	MAXIM	获取价格	LED Driver, 28-Segment, CMOS, QFN-40

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