MAX7323AEE+T Maxim Integrated Products, MAX7323AEE+T Datasheet

IC I/O EXPANDER I2C 4B 16QSOP

MAX7323AEE+T

Manufacturer Part Number
MAX7323AEE+T
Description
IC I/O EXPANDER I2C 4B 16QSOP
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of MAX7323AEE+T

Interface
I²C
Number Of I /o
4
Interrupt Output
Yes
Frequency - Clock
400kHz
Voltage - Supply
1.71 V ~ 5.5 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
16-QSOP
Includes
POR
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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
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
2
C communication to or from the MAX7323.
μC
SDA
SCL
RST
INT
I
2
Typical Application Circuit
C Port Expander with 4 Push-Pull Outputs
________________________________________________________________ Maxim Integrated Products
SCL
SDA
INT
AD0
AD2
RST
2
C slave addresses. The slave
MAX7323
General Description
3.3V
GND
V+
Notebooks
RAID
Automotive
O7
O6
P5
P4
P3
P2
O1
O0
Applications
0.047μF
OUTPUT
OUTPUT
OUTPUT
OUTPUT
I/O
I/O
I/O
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
2
Up to 8
Up to 4
Up to 8
Up to 8
C Serial Interface
8
4
-40°C to
-40°C to
RANGE
+125°C
+125°C
TEMP
INTERRUPT
Ordering Information
MASK
Yes
Yes
PIN-
PACKAGE
16 QSOP
16 TQFN-EP*
3mm x 3mm
Selector Guide
OUTPUTS
Up to 8
Up to 4
Up to 8
Up to 8
OPEN-
DRAIN
MARK
TOP
ADE
Features
PUSH-PULL
OUTPUTS
T1633-4
CODE
E16-4
8
4
4
PKG
1

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MAX7323AEE+T Summary of contents

Page 1

... P3 P2 AD0 O1 AD2 O0 GND ________________________________________________________________ Maxim Integrated Products 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. and 4 Open-Drain I/Os ♦ 400kHz I ♦ +1.71V to +5.5V Operating Voltage ♦ 4 Push-Pull Output Ports Rated at 20mA Sink Current ♦ ...

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

I C Port Expander with 4 Push-Pull Outputs Detailed Description MAX7319–MAX7329 Family Comparison The MAX7319–MAX7323 family consists of five pin- compatible, eight-port expanders. Each version is opti- mized for different applications. The MAX7328 and MAX7329 are industry-standard parts. The ...

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 ...

Page 7

I C Port Expander with 4 Push-Pull Outputs Table 2. Read and Write Access to Eight-Port Expander Family SLAVE PART INPUTS ADDRESS MAX7319 110xxxx 8 MAX7320 101xxxx — MAX7321 110xxxx MAX7322 110xxxx 4 ...

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 15 ...

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

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 17 © 2007 Maxim Integrated Products ...

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