MAX7323ATE+ Datasheet MAX7323AEE+, MAX7323ATE+, MAX7323AEE+T | P1-P3

General Description

The MAX7323 2-wire serial-interfaced peripheral features

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

other four are open-drain I/O ports that are overvoltage

protected up to +6V independent of the 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

C communication to or from the MAX7323.

The MAX7323 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 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).

Features

♦ 400kHz I

C Serial Interface

♦ +1.71V to +5.5V Operating Voltage

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

Current

♦ 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

Between Read Operations

♦ INT Output Alerts Change on Inputs

♦ AD0 and AD2 Inputs Select from 16 Slave

Addresses

♦ Low 0.6µA (typ) Standby Current

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

MAX7323

C Port Expander with 4 Push-Pull Outputs

and 4 Open-Drain I/Os

________________________________________________________________ Maxim Integrated Products 1

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.

Ordering Information

PART

TEMP

RANGE

PIN-

PACKAGE

TOP

MARK

PKG

CODE

MAX7323AEE+

-40°C to

+125°C

16 QSOP — E16-4

MAX7323ATE+

-40°C to

+125°C

16 TQFN-EP*

3mm x 3mm

ADE T1633-4

Pin Configurations and Functional Diagram appear at end

of data sheet.

Selector Guide

PART INPUTS

INTERRUPT

MASK

OPEN-

DRAIN

OUTPUTS

PUSH-PULL

OUTPUTS

MAX7319 8 Yes — —

MAX7320 — — — 8

MAX7321 Up to 8 — Up to 8 —

MAX7322 4 Yes — 4

MAX7323 Up to 4 — Up to 4 4

MAX7328 Up to 8 — Up to 8 —

MAX7329 Up to 8 — Up to 8 —

+Denotes a lead-free package.

*EP = Exposed paddle.

Cell Phones

SAN/NAS

Servers

Notebooks

RAID

Automotive

Applications

MAX7323

V+

0.047μF

μC

SCL

SDA

SCL

AD0

SDA

AD2

INT

OUTPUT

RST

INT

RST

I/O

OUTPUT

3.3V

GND

Typical Application Circuit

MAX7323

C Port Expander with 4 Push-Pull Outputs

and 4 Open-Drain I/Os

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional

operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to

absolute maximum rating conditions for extended periods may affect device reliability.

(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 to (V+ + 0.3V)

O0, O1, O6, O7 Output Current........................................±25mA

P2–P5 Sink Current...........................................................±25mA

SDA Sink Current ............................................................... 10mA

INT Sink Current..................................................................10mA

Total V+ Current..................................................................50mA

Total GND Current ...........................................................100mA

Continuous Power Dissipation (T

= +70°C)

16-Pin QSOP (derate 8.3mW/°C above +70°C)...........667mW

16-Pin TQFN (derate 15.6mW/°C above +70°C) .......1250mW

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

Junction Temperature......................................................+150°C

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

ELECTRICAL CHARACTERISTICS

(V+ = +1.71V to +5.5V, T

= -40°C to +125°C, unless otherwise noted. Typical values are at V+ = +3.3V, T

= +25°C.) (Note 1)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Operating Supply Voltage V+ 1.71 5.50 V

Power-On Reset Voltage V

POR

V+ falling 1.6 V

Standby Current

(Interface Idle)

STB

SCL and SDA and other digital inputs at V+ 0.6 1.5 µA

Supply Current

(Interface Running)

I+ f

SCL

= 400kHz; other digital inputs at V+ 23 55 µA

V+ ≤ 1.8V 0.8 x V+

Input High Voltage

SDA, SCL, AD0, AD2, RST, P2–P5

V+ ≥ 1.8 0.7 x V+

V+ ≤ 1.8V 0.2 x V+

Input Low Voltage

SDA, SCL, AD0, AD2, RST, P2–P5

V+ ≥ 1.8V 0.3 x V+

Input Leakage Current

SDA, SCL, AD0, AD2, RST, P2–P5

, I

SDA, SCL, AD0, AD2, RST, P2–P5 at V+ or

GND, internal pullup disabled

-0.2 +0.2 µA

Input Capacitance

SDA, SCL, AD0, AD2, RST, P2–P5

10 pF

V+ = +1.71V, I

SINK

= 5mA 105 180

V+ = +2.5V, I

SINK

= 10mA 131 240

V+ = +3.3V, I

SINK

= 15mA 154 290

Output Low Voltage

O0, O1, O6, O7, P2–P5

V+ = +5V, I

SINK

= 20mA 160 310

V+ = +1.71V, I

SOURCE

= 2mA V+ - 250 V + - 30

V+ = +2.5V, I

SOURCE

= 5mA V+ - 360 V + - 70

V+ = +3.3V, I

SOURCE

= 5mA V+ - 260 V + - 100

Output High Voltage

O0, O1, O6, O7

V+ = +5V, I

SOURCE

= 10mA V+ - 350 V + - 120

Output Low Voltage

SDA

OLSDA

SINK

= 6mA 250 mV

Output Low Voltage

INT

OLINT

SINK

= 5mA 130 250 mV

Port Input Pullup Resistor R

25 40 55 kΩ

MAX7323

C Port Expander with 4 Push-Pull Outputs

and 4 Open-Drain I/Os

_______________________________________________________________________________________ 3

PORT AND INTERRUPT INT TIMING CHARACTERISTICS

(V+ = +1.71V to +5.5V, T

= -40°C to +125°C, unless otherwise noted. Typical values are at V+ = +3.3V, T

= +25°C.) (Note 1)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Port Output Data Valid t

PPV

≤ 100pF 4 µs

Port Input Setup Time t

PSU

≤ 100pF 0 µs

Port Input Hold Time t

≤ 100pF 4 µs

INT Input Data Valid Time t

≤ 100pF 4 µs

INT Reset Delay Time from STOP t

≤ 100pF 4 µs

INT Reset Delay Time from

Acknowledge

≤ 100pF 4 µs

TIMING CHARACTERISTICS

(V+ = +1.71V to +5.5V, T

= -40°C to +125°C, unless otherwise noted. Typical values are at V+ = +3.3V, T

= +25°C.) (Note 1)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Serial-Clock Frequency f

SCL

400 kHz

Bus Free Time Between a STOP

and a START Condition

BUF

1.3 µs

Hold Time (Repeated) START

Condition

STA

0.6 µs

Repeated START Condition

Setup Time

STA

0.6 µs

STOP Condition Setup Time t

STO

0.6 µs

Data Hold Time t

DAT

(Note 2) 0.9 µs

Data Setup Time t

DAT

100 ns

SCL Clock Low Period t

LOW

1.3 µs

SCL Clock High Period t

HIGH

0.7 µs

Rise Time of Both SDA and SCL

Signals, Receiving

(Notes 3, 4)

20 +

0.1C

300 ns

Fall Time of Both SDA and SCL

Signals, Receiving

(Notes 3, 4)

20 +

0.1C

300 ns

Fall Time of SDA, Transmitting t

F,TX

(Notes 3, 4)

20 +

0.1C

250 ns

Pulse Width of Spike Suppressed t

(Note 5) 50 ns

Capacitive Load for Each Bus

Line

(Note 3) 400 pF

RST Pulse Width t

500 ns

RST Rising to START Condition

Setup Time

RST

1µs

Note 1: All parameters tested at T

= +25°C. Specifications over temperature are guaranteed by design.

Note 2: A master device must provide a hold time of at least 300ns for the SDA signal (referred to V

of the SCL signal) in order to

bridge the undefined region of SCL’s falling edge.

Note 3: Guaranteed by design.

Note 4: C

= total capacitance of one bus line in pF. t

and t

measured between 0.3 x V+ and 0.7 x V+ with I

SINK

≤ 6mA.

Note 5: Input filters on the SDA and SCL inputs suppress noise spikes less than 50ns.

P1-P3 P4-P6 P7-P9 P10-P12 P13-P15 P16-P17

MAX7323ATE+

Mfr. #:

Buy MAX7323ATE+

Manufacturer:

Maxim Integrated

Description:

Interface - I/O Expanders I2C Port Expander w/4 P-P Out & 4 I/O

Lifecycle:

New from this manufacturer.

Delivery:

DHL FedEx Ups TNT EMS

Payment:

T/T Paypal Visa MoneyGram Western Union

MAX7323ATE+

MAX7323ATE+

Products related to this Datasheet