MAX7329 MAXIM [Maxim Integrated Products], MAX7329 Datasheet

MAX7329

Manufacturer Part Number

MAX7329

Description

I2C Port Expander with 4 Push-Pull Outputs

Manufacturer

MAXIM [Maxim Integrated Products]

Datasheet

1.MAX7329.pdf (17 pages)

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Bonase Electronics (HK) Co., Limited

Part Number:

MAX7329AWE+

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Maxim

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The MAX7323 2-wire serial-interfaced peripheral fea-

tures eight I/O ports. Four ports are push-pull outputs

and the other four are open-drain I/O ports, indepen-

dent of supply voltage.

The four I/O ports configured as inputs are continu-

ously monitored for state changes (transition detec-

tion). State changes are indicated by the open-drain

INT output. The interrupt is latched, allowing detection

of transient changes. When the MAX7323 is subse-

quently accessed through the serial interface, any

pending interrupt is cleared.

The four push-pull and four open-drain outputs are

rated to sink 20mA and are capable of driving LEDs.

The RST input clears the serial interface, terminating

any I

The MAX7323 uses two address inputs with four-level

logic to allow 16 I

address also determines the power-up logic state for

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

pullups for the input ports in groups of two ports.

The MAX7323 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).

The MAX7323 is available in 16-pin QSOP and 16-pin

TQFN packages, and is specified over the automotive

temperature range (-40°C to +125°C).

19-3806; Rev 1; 7/07

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

Cell Phones

SAN/NAS

Servers

C communication to or from the MAX7323.

μC

SDA

SCL

RST

INT

Typical Application Circuit

C Port Expander with 4 Push-Pull Outputs

________________________________________________________________ Maxim Integrated Products

SCL

SDA

INT

AD0

AD2

RST

C slave addresses. The slave

MAX7323

General Description

3.3V

GND

V+

Notebooks

RAID

Automotive

Applications

0.047μF

OUTPUT

I/O

♦ 400kHz I

♦ +1.71V to +5.5V Operating Voltage

♦ 4 Push-Pull Output Ports Rated at 20mA Sink

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

♦ 4 I/O Ports Are Overvoltage Protected to +6V

♦ Transient Changes Are Latched, Allowing Detection

♦ INT Output Alerts Change on Inputs

♦ AD0 and AD2 Inputs Select from 16 Slave

♦ Low 0.6µA (typ) Standby Current

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

+Denotes a lead-free package.

*EP = Exposed paddle.

Pin Configurations and Functional Diagram appear at end

of data sheet.

MAX7323AEE+

MAX7323ATE+

MAX7319

MAX7320

MAX7321

MAX7322

MAX7323

MAX7328

MAX7329

PART

Current

Between Read Operations

Addresses

and 4 Open-Drain I/Os

PART

INPUTS

Up to 8

Up to 4

Up to 8

C Serial Interface

—

-40°C to

RANGE

+125°C

TEMP

INTERRUPT

Ordering Information

MASK

Yes

—

PIN-

PACKAGE

16 QSOP

16 TQFN-EP*

3mm x 3mm

Selector Guide

OUTPUTS

Up to 8

Up to 4

Up to 8

OPEN-

DRAIN

—

MARK

TOP

ADE

Features

—

PUSH-PULL

OUTPUTS

T1633-4

CODE

—

E16-4

PKG

Related parts for MAX7329

MAX7329 Summary of contents

Page 1

... MAX7323AEE+ MAX7323ATE+ +Denotes a lead-free package. *EP = Exposed paddle. Applications PART MAX7319 MAX7320 0.047μF MAX7321 MAX7322 OUTPUT MAX7323 OUTPUT MAX7328 I/O MAX7329 I/O I/O I/O OUTPUT OUTPUT Pin Configurations and Functional Diagram appear at end of data sheet. Features 2 C Serial Interface Ordering Information TEMP PIN- TOP RANGE ...

Page 2

I C Port Expander with 4 Push-Pull Outputs and 4 Open-Drain I/Os ABSOLUTE MAXIMUM RATINGS (All voltages referenced to GND.) Supply Voltage V+....................................................-0.3V to +6V SCL, SDA, AD0, AD2, RST, INT, P2–P5 ...................-0.3V to +6V O0, O1, O6, O7...............................................-0.3 ...

Page 3

I C Port Expander with 4 Push-Pull Outputs PORT AND INTERRUPT INT TIMING CHARACTERISTICS (V+ = +1.71V to +5.5V -40°C to +125°C, unless otherwise noted. Typical values are +3.3V PARAMETER SYMBOL Port ...

Page 4

I C Port Expander with 4 Push-Pull Outputs and 4 Open-Drain I/ +25°C, unless otherwise noted.) A STANDBY CURRENT vs. TEMPERATURE 2.0 1.8 1.6 1.4 1.2 1 +3. +2.5V 0.8 0.6 0.4 0.2 ...

Page 5

... The MAX7328 and MAX7329 are industry-standard parts. The MAX7324–MAX7327 family consists of four pin- compatible, 16-port expanders that integrate the func- tions of the MAX7320 and one of either the MAX7319, MAX7321, MAX7322, or MAX7323. Table 1. MAX7319–MAX7329 Family Comparison PART SLAVE ...

Page 6

... I C Port Expander with 4 Push-Pull Outputs and 4 Open-Drain I/Os Table 1. MAX7319–MAX7329 Family Comparison (continued INPUT PART SLAVE INPUTS INTERRUPT ADDRESS MASK MAX7323 110xxxx MAX7328 0100xxx MAX7329 0111xxx 16-PORT EXPANDERS MAX7324 8 101xxxx MAX7325 and MAX7326 4 110xxxx MAX7327 ...

Page 7

... MAX7323 110xxxx MAX7328 0100xxx MAX7329 0111xxx Slave Address and Input Pullup Selection Address inputs AD0 and AD2 determine the MAX7323 slave address, select which inputs have pullup resis- tors, and set the default logic state on outputs. Pullups are enabled on the input ports in groups of two (see Table 3) ...

Page 8

I C Port Expander with 4 Push-Pull Outputs and 4 Open-Drain I/Os Table 3. MAX7323 Address Map PIN DEVICE ADDRESS CONNECTION AD2 AD0 SCL GND ...

Page 9

I C Port Expander with 4 Push-Pull Outputs SDA t SU,DAT t LOW t SCL HIGH t HD,STA t R START CONDITION Figure 1. 2-Wire Serial Interface Timing Details The MAX7323 operates as a slave that sends and 2 ...

Page 10

I C Port Expander with 4 Push-Pull Outputs and 4 Open-Drain I/Os Accessing the MAX7323 The MAX7323 is accessed through an I transition flags are cleared, and INT is deasserted each 2 time the device acknowledges the I A ...

Page 11

I C Port Expander with 4 Push-Pull Outputs . 1 1 SDA MSB SCL Figure 5. Slave Address MAX7321 SLAVE ADDRESS SCL PORT I INT OUTPUT Figure 6. Reading the MAX7323 (1 Data ...

Page 12

I C Port Expander with 4 Push-Pull Outputs and 4 Open-Drain I/ SCL SLAVE ADDRESS S SDA START CONDITION INTERNAL WRITE TO PORT DATA OUT FROM PORT S = START CONDITION P = STOP ...

Page 13

I C Port Expander with 4 Push-Pull Outputs AD0 AD2 SCL SDA RST Driving LED Loads When driving LEDs from one of the four output ports (O0, O1, O6, or O7), a resistor must be connected in series with ...

Page 14

I C Port Expander with 4 Push-Pull Outputs and 4 Open-Drain I/Os Driving Load Currents Higher than 20mA The MAX7323 can be used to drive loads, such as relays, that draw more than 20mA by paralleling out- puts. Use ...

Page 15

I C Port Expander with 4 Push-Pull Outputs (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) ______________________________________________________________________________________ and 4 Open-Drain I/Os Package Information PACKAGE ...

Page 16

I C Port Expander with 4 Push-Pull Outputs and 4 Open-Drain I/Os (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) E MARKING E/2 AAAA ...

Page 17

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