MAX7325ATG-T Maxim Integrated, MAX7325ATG-T Datasheet

MAX7325ATG-T

Manufacturer Part Number

MAX7325ATG-T

Description

Interface - I/O Expanders

Manufacturer

Maxim Integrated

Series

MAX7325r

Datasheet

1.MAX7325ATG-T.pdf (17 pages)

Specifications of MAX7325ATG-T

Maximum Operating Frequency

400 KHz

Operating Supply Voltage

1.71 V to 5.5 V

Operating Temperature Range

- 40 C to + 125 C

Power Dissipation

761.9 mW

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The MAX7325 2-wire serial-interfaced peripheral features

16 I/O ports. Ports are divided into eight push-pull out-

puts and eight I/Os with selectable internal pullups and

transition detection. Eight ports are push-pull outputs

and eight I/Os may be used as a logic input or an open-

drain output. Ports are overvoltage protected to +6V.

All I/O ports configured as inputs are continuously mon-

itored for state changes (transition detection). State

changes are indicated by the INT output. The interrupt

is latched, allowing detection of transient changes.

When the MAX7325 is subsequently accessed through

the serial interface, any pending interrupt is cleared.

The 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 MAX7325.

The MAX7325 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 in groups of four ports.

The MAX7325 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 MAX7325 is available in 24-pin QSOP and TQFN

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

automotive temperature range.

For pricing, delivery, and ordering information, please contact Maxim Direct

at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.

Pin Configurations continued at end of data sheet.

TOP VIEW

Cell Phones

SAN/NAS

Servers

SCL

SDA

AD2

RST

INT

V+

TQFN (4mm x 4mm)

C slave addresses. The slave

EXPOSED PADDLE

General Description

MAX7325

Pin Configurations

C communication to or from

Notebooks

Satellite Radio

Automotive

Applications

C Port Expander with 8 Push-Pull

O10

GND

o 400kHz I

o +1.71V to +5.5V Operation

o 8 Push-Pull Outputs

o 8 Open-Drain I/O Ports, Rated to 20mA Sink

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

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

o Transient Changes are Latched, Allowing

o INT Output Alerts Change on Inputs

o AD0 and AD2 Inputs Select from 16 Slave

o Low 0.6µA (typ) Standby Current

o -40°C to +125°C Temperature Range

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

* EP = Exposed paddle.

/V Denotes an automotive qualified part.

Typical Application Circuit and Functional Diagram appear

at end of data sheet.

MAX7324

MAX7325

MAX7326

MAX7327

MAX7325AEG+

MAX7325AEG/V+

MAX7325ATG+

PART

Current

Detection Between Read Operations

Addresses

and 8 Open-Drain I/Os

PART

INPUTS

Up to 8

Up to 4

C Serial Interface

INTERRUPT

-40°C to +125°C

TEMP RANGE

Ordering Information

MASK

Yes

—

EVALUATION KIT AVAILABLE

Selector Guide

MAX7325

OUTPUTS

Up to 8

Up to 4

OPEN-

DRAIN

—

PIN-PACKAGE

24 QSOP

24 TQFN-EP*

(4mm x 4mm)

19-3807; Rev 1; 9/12

Features

PUSH-PULL

OUTPUTS

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