Datasheet > MAX7326

MAX7326

更新时间： 2023-12-20 18:45:31

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
18页	959K
描述
I2C端口扩展器，提供12路推挽式输出和4路输入

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MAX7326 数据手册

EVALUATION KIT AVAILABLE

MAX7326

I²C Port Expander with

12 Push-Pull Outputs and 4 Inputs

General Description

Features

● 400kHz I C Serial Interface

The MAX7326 2-wire serial-interfaced peripheral features

16 I/O ports. The ports are divided into 12 push-pull out-

puts and four input ports with selectable internal pullups.

Input ports are overvoltage protected to +6V and feature

transition detection with interrupt output.

● +1.71V to +5.5V Operating Voltage

● 12 Push-Pull Outputs Rated at 20mA Sink Current

● 4 Input Ports with Matchable Latching Transition

Detection

The four input ports are continuously monitored for state

changes (transition detection). The interrupt is latched,

allowing detection of transient changes. Any combina-

tion of inputs can be selected using the interrupt mask

to assert the open-drain, +6V-tolerant INT output. When

the MAX7326 is subsequently accessed through the

serial interface, any pending interrupt is cleared. The 12

push-pull outputs are rated to sink 20mA and are capable

of driving LEDs. The RST input clears the serial inter-

● Input Ports are Overvoltage Protected to +6V

● Transient Changes are Latched, Allowing Detection

Between Read Operations

● INT Output Alerts Change on Any Selection of Inputs

● AD0 and AD2 Inputs Select from 16 Slave Addresses

● Low 0.6µA Standby Current

ace, terminating any I C communication to or from the

● -40°C to +125°C Temperature Range

MAX7326.

The MAX7326 uses two address inputs with four-level

logic to allow 16 I C slave addresses. The slave address

Ordering Information

also sets the power-up default state for the 12 output

ports and enables or disables internal 40kΩ pullups in

groups of two input ports.

PART

TEMP RANGE

PIN-PACKAGE

MAX7326AEG+

MAX7326ATG+

-40°C to +125°C 24 QSOP

24 TQFN-EP*

(4mm x 4mm)

The MAX7326 is one device in a family of pin-compatible

port expanders with a choice of input ports, open-drain

I/O ports, and push-pull output ports (see Table 1).

-40°C to +125°C

+Denotes a lead(Pb)-free/RoHS-compliant package.

*EP = Exposed pad.

The MAX7326 is available in 24-pin QSOP and TQFN

packages and is specified over the -40°C to +125°C

automotive temperature range.

Selector Guide

Applications

● Cell Phones

● SAN/NAS

● Servers

● Notebooks

● Satellite Radio

OPEN-

DRAIN

OUTPUTS

INTERRUPT

MASK

PUSH-PULL

OUTPUTS

PART

INPUTS

MAX7324

Yes

—

Pin Conﬁgurations

MAX7325 Up to 8

MAX7326

MAX7327 Up to 4

Up to 8

—

TOP VIEW

18 17 16 15 14 13

Yes

—

SCL 19

SDA 20

V+ 21

12 O10

11 O9

10 O8

Up to 4

MAX7326

INT

RST

AD2

GND

EXPOSED PAD

Typical Application Circuit and Functional Diagram appear

at end of data sheet.

O0 O1 I2 I3 I4 I5

TQFN (4mm x 4mm)

Pin Configurations continued at end of data sheet.

19-3804; Rev 1; 5/14

12 3 4 5 6 7...18

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与MAX7326相关器件

型号	品牌	描述	获取价格	数据表
MAX7326AEG	MAXIM	Parallel I/O Port, 0 I/O, BICMOS, PDSO24, 0.150 INCH, 0.25 INCH PITCH, MO-137AE, QSOP-24	获取价格
MAX7326AEG+	MAXIM	暂无描述	获取价格
MAX7326AEG+T	MAXIM	I<sup>2</sup>C Port Expander with 12 Push-Pull Outputs and Four Inputs	获取价格
MAX7326AEG-T	MAXIM	Parallel I/O Port, 0 I/O, BICMOS, PDSO24, 0.150 INCH, 0.25 INCH PITCH, MO-137AE, QSOP-24	获取价格
MAX7326ATG	MAXIM	Parallel I/O Port, 0 I/O, BICMOS, 4 X 4 MM, 0.80 MM HEIGHT, MO-220WGGD-2, TQFN-24	获取价格
MAX7326ATG+	MAXIM	Parallel I/O Port, 0 I/O, BICMOS, 4 X 4 MM, 0.80 MM HEIGHT, LEAD FREE, MO-220WGGD-2, TQFN-	获取价格

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