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MAX7327

更新时间： 2024-11-05 04:41:43

品牌	Logo	应用领域
美信 - MAXIM		/
页数	文件大小	规格书
21页	1109K
描述
I2C Port Expander with 12 Push-Pull Outputs and 4 Open-Drain I/Os

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MAX7327 数据手册

19-3805; Rev 0; 8/06

I C Port Expander with 12 Push-Pull Outputs

and 4 Open-Drain I/Os

General Description

Features

♦ 400kHz I C Serial Interface

The MAX7327, a 2-wire serial-interfaced peripheral,

features 12 push-pull outputs and four configurable

open-drain I/O ports with selectable internal pullups

and transition detection. Ports are overvoltage protect-

ed to +6V, independent of supply voltage.

♦ +1.71V to +5.5V Operating Voltage

♦ 12 Push-Pull Output Ports, Rated at 20mA Sink

Current

♦ 4 Open-Drain I/O Ports, Rated at 20mA Sink Current

♦ I/O Ports are Overvoltage Protected to +6V

♦ Selectable I/O Port Power-Up Default Logic States

The four I/O ports configured as inputs are continuously

monitored for state changes (transition detection). State

changes are indicated by the open-drain, +6V-tolerant

INT output. The interrupt is latched, detecting transient

changes. When the MAX7327 is subsequently accessed

through the serial interface, any pending interrupt is

cleared. The 12 push-pull and the four open-drain out-

puts are rated to sink 20mA, and are capable of driving

LEDs. The RST input clears the serial interface, terminat-

♦ Transient Changes are Latched, Allowing Detection

Between Read Operations

♦ INT Output Alerts Changes on Inputs

♦ AD0 and AD2 Inputs Select from 16 Slave

Addresses

♦ Low 0.6µA (typ) Standby Current

♦ -40°C to +125°C Temperature Range

ing any I C* communication to or from the MAX7327.

The MAX7327 uses two address inputs with four-level

logic to allow 16 I C slave addresses. The slave

address also determines the power-up logic state for

the I/O ports, and enables or disables internal 40kΩ

pullups in groups of two ports.

Ordering Information

PKG

CODE

The MAX7327 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).

PART

TEMP RANGE PIN-PACKAGE

MAX7327AEG+ -40°C to +125°C 24 QSOP

E24-1

24 TQFN-EP**

(4mm x 4mm)

The MAX7327 is available in the 24-pin QSOP and

TQFN packages, and is specified over the -40°C to

+125°C automotive temperature range.

MAX7327ATG+ -40°C to +125°C

MAX7327AATG+ -40°C to +125°C

T2444-3

24 TQFN-EP**

(3.5mm x 3.5mm)

T243A3-1

Applications

+Denotes lead-free package.

**EP = Exposed pad.

Cell Phones

SAN/NAS

Servers

Notebooks

Satellite Radio

Automotive

Selector Guide

Pin Configurations

OPEN-

INTERRUPT

PUSH-PULL

DRAIN

PART

INPUTS

MASK

OUTPUTS

TOP VIEW

SCL

18 17 16 15 14 13

MAX7324

Yes

—

O10

MAX7325 Up to 8

MAX7326

MAX7327 Up to 4

Up to 8

—

SDA 20

11 O9

Yes

—

V+

Up to 4

MAX7327

INT

GND

Typical Application Circuit and Functional Diagram appear

at end of data sheet.

RST

AD2

EXPOSED PADDLE

*Purchase of I²C components from Maxim Integrated Products,

Inc., or one of its sublicensed Associated Companies, conveys

a license under the Philips I²C Patent Rights to use these com-

ponents in an I²C system, provided that the system conforms

to the I²C Standard Specification as defined by Philips.

TQFN (4mm x 4mm)

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...21

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与MAX7327相关器件

型号	品牌	获取价格	描述	数据表
MAX7327AATG+	MAXIM	获取价格	I2C Port Expander with 12 Push-Pull Outputs and 4 Open-Drain I/Os
MAX7327AATG+T	MAXIM	获取价格	Parallel I/O Port, 16-Bit, 4 I/O, BICMOS, 3.50 X 3.50 MM, 0.80 MM HEIGHT, ROHS COMPLIANT,
MAX7327AEG	MAXIM	获取价格	Parallel I/O Port, 16-Bit, 4 I/O, BICMOS, PDSO24, 0.150 INCH, 0.25 INCH PITCH, MO-137AE, Q
MAX7327AEG+	MAXIM	获取价格	I2C Port Expander with 12 Push-Pull Outputs and 4 Open-Drain I/Os
MAX7327ATG+	MAXIM	获取价格	I2C Port Expander with 12 Push-Pull Outputs and 4 Open-Drain I/Os
MAX7328	MAXIM	获取价格	I2C Port Expander with 4 Push-Pull Outputs
MAX7328	ADI	获取价格	I2C端口扩展器，带有八个I/O口
MAX7328AAP	MAXIM	获取价格	Parallel I/O Port, 8-Bit, 8 I/O, BICMOS, PDSO20, 5.30 MM, MO150, SSOP-20
MAX7328AAP+	MAXIM	获取价格	Parallel I/O Port, 8-Bit, 8 I/O, BICMOS, PDSO20, 5.30 MM, LEAD FREE, MO150, SSOP-20
MAX7328AAP+T	MAXIM	获取价格	Parallel I/O Port, 8-Bit, 8 I/O, BICMOS, PDSO20, 5.30 MM, MO150, SSOP-20

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