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MAX7319

更新时间： 2024-10-27 22:55:15

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美信 - MAXIM		/
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描述
I2C Port Expander with Eight Inputs and Maskable Transition Detection

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MAX7319 数据手册

19-3809; Rev 1; 10/05

I C Port Expander with Eight Inputs and

Maskable Transition Detection

General Description

Features

ꢀ 400kHz, +5.5V-Tolerant I²C Serial Interface

The MAX7319 2-wire serial-interfaced peripheral fea-

tures eight input ports with selectable internal pullups,

overvoltage protection to +6V, and transition detection

with interrupt output.

ꢀ +1.71V to +5.5V Operating Voltage

ꢀ Eight Input Ports with Maskable, Latching

Transition Detection

ꢀ Input Ports are Overvoltage Protected to +6V

All input ports are continuously monitored for state

changes (transition detection). Transitions are latched,

allowing detection of transient changes. Any combination

of inputs can be selected using the interrupt mask to

assert the INT output. When the MAX7319 is subsequently

accessed through the serial interface, any pending inter-

rupt is cleared.

ꢀ Transient Changes are Latched, Allowing

Detection Between Read Operations

ꢀ INT Output Alerts Change on Any Selection of

Inputs

The +5.5V tolerant RST input clears the serial interface,

terminating any I²C communication to or from the

MAX7319.

ꢀ AD0 and AD2 Inputs Select from 16 Slave

Addresses

ꢀ Low 0.6µA (typ) Standby Current

The MAX7319 uses two address inputs with four-level

logic to allow 16 I²C slave addresses. The slave

address also enables or disables internal 40kΩ pullups

in groups of four ports.

ꢀ -40°C to +125°C Operating Temperature Range

The MAX7319 supports hot insertion. All eight input

ports, the serial interface SDA, SCL, AD0, AD2, INT,

and RST remain high impedance in power-down (V+ =

0) with up to +6V asserted on them.

Ordering Information

PART

PIN-PACKAGE TOP MARK PKG CODE

The MAX7319 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).

MAX7319AEE+ 16 QSOP

—

E16-4

MAX7319ATE+ 16 TQFN-EP*

ADA

T1633-4

Note: All devices specified over -40°C to +85°C operating range.

+Denotes lead-free package.

*EP = Exposed pad.

The MAX7319 is available in 16-pin QSOP and 16-pin

TQFN packages, and is specified over the automotive

temperature range (-40°C to +125°C).

Applications

Notebooks

Pin Configurations, Typical Application Circuit, and

Functional Diagram appear at end of data sheet.

Cell Phones

SAN/NAS

Servers

Satellite Radio

Automotive

Selector Guide

PART

INPUTS

INTERRUPT MASK

OPEN-DRAIN OUTPUTS

PUSH-PULL OUTPUTS

MAX7319

MAX7320

MAX7321

MAX7322

—

Yes

—

Up to 8

—

Up to 8

—

Yes

MAX7323

MAX7328*

Up to 4

—

Up to 4

—

Up to 8

MAX7329**

*Second source to PCF8574.

**Second source to PCF8574A.

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

Standard Specification as defined by Philips.

________________________________________________________________ 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...16

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与MAX7319相关器件

型号	品牌	获取价格	描述	数据表
MAX7319AEE	MAXIM	获取价格	Parallel I/O Port, 1-Bit, 0 I/O, BICMOS, PDSO16, 0.150 INCH, 0.25 INCH PITCH, MO-137AB, QS
MAX7319AEE+	MAXIM	获取价格	I2C Port Expander with Eight Inputs and Maskable Transition Detection
MAX7319AEE+T	MAXIM	获取价格	Parallel I/O Port, 1-Bit, 0 I/O, BICMOS, PDSO16, 0.150 INCH, 0.25 INCH PITCH, ROHS COMPLIA
MAX7319ATE	MAXIM	获取价格	Parallel I/O Port, 1-Bit, 0 I/O, BICMOS, 3 X 3 MM, 0.80 MM HEIGHT, MO-220C, TDFN-16
MAX7319ATE+	MAXIM	获取价格	I2C Port Expander with Eight Inputs and Maskable Transition Detection
MAX7319ATE-T	MAXIM	获取价格	Parallel I/O Port, 1-Bit, 0 I/O, BICMOS, 3 X 3 MM, 0.80 MM HEIGHT, MO-220C, TDFN-16
MAX731C/D	MAXIM	获取价格	+5V/Adjustable Step-Up Current-Mode DC-DC Converters
MAX731CPA	MAXIM	获取价格	+5V/Adjustable Step-Up Current-Mode DC-DC Converters
MAX731CWA	MAXIM	获取价格	+5V/Adjustable Step-Up Current-Mode DC-DC Converters
MAX731CWE	MAXIM	获取价格

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