MAX7322AEE+ Maxim Integrated Products, MAX7322AEE+ Datasheet

IC I/O EXPANDER I2C 4B 16QSOP

MAX7322AEE+

Manufacturer Part Number
MAX7322AEE+
Description
IC I/O EXPANDER I2C 4B 16QSOP
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of MAX7322AEE+

Interface
I²C
Number Of I /o
4
Interrupt Output
Yes
Frequency - Clock
400kHz
Voltage - Supply
1.7 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 MAX7322 2-wire serial-interfaced peripheral features
four push-pull outputs and four input ports with selectable
internal pullups. Input ports are overvoltage protected to
+6V and feature transition detection with interrupt output.
The four input ports are continuously monitored for state
changes (transition detection). The interrupt is latched,
allowing detection of transient changes. Any combination
of inputs can be selected using the interrupt mask to
assert the open-drain INT output. When the MAX7322 is
subsequently accessed through the serial interface, any
pending interrupt is cleared.
The four push-pull outputs are rated to sink 20mA, and
are capable of driving LEDs.
The RST input clears the serial interface, terminating any
I
The MAX7322 uses two address inputs with four-level
logic to allow 16 I
also sets the power-up default logic state for the four out-
put ports, and enables or disables internal 40kΩ pullups
for the input ports.
The MAX7322 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 MAX7322 is available in 16-pin QSOP and TQFN
packages, and is specified over the -40°C to +125°C
automotive temperature range.
19-3787; Rev 1; 9/06
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.
2
C communication to or from the MAX7322.
Pin Configurations continued at end of data sheet.
Cell Phones
SAN/NAS
Servers
TOP VIEW
SDA
AD0
RST
V+
13
14
15
16
2
________________________________________________________________ Maxim Integrated Products
C slave addresses. The slave address
+
12
1
(3mm x 3mm)
*EP
MAX7322
General Description
11
TQFN
2
Pin Configurations
10
3
Notebooks
Satellite Radio
Automotive
9
4
Applications
4 Push-Pull Outputs and 4 Inputs
8
7
6
5
I5
I4
GND
I3
I
♦ 400kHz I
♦ +1.71V to +5.5V Operation Voltage
♦ 4 Push-Pull Output Ports Rated at 20mA Sink
♦ 4 Input Ports with Maskable, Latching Transition
♦ Input Ports are Overvoltage Protected to +6V
♦ Transient Changes are Latched, Allowing
♦ INT Output Alerts Change on Any Selection of
♦ AD0 and AD2 Inputs Select from 16 Slave
♦ Low 0.6µA (typ) Standby Current
♦ -40°C to +125°C Operating Temperature Range
+Denotes lead-free package.
*EP = Exposed paddle.
Typical Application Circuit and Functional Diagram appear
at end of data sheet.
MAX7322AEE+
MAX7322ATE+
MAX7319
MAX7320
MAX7321
MAX7322
MAX7323
MAX7328
MAX7329
2
PART
Current
Detection
Detection Between Read Operations
Inputs
Addresses
C Port Expander with
PART
INPUTS
Up to 8
Up to 4
Up to 8
Up to 8
2
C Serial Interface
8
4
RANGE
-40°C to
-40°C to
+125°C
+125°C
TEMP
INTERRUPT
Ordering Information
MASK
Yes
Yes
PIN-
PACKAGE
16 QSOP
16 TQFN-EP*
(3mm x 3mm)
Selector Guide
OUTPUTS
OPEN-
DRAIN
Up to 8
Up to 4
Up to 8
Up to 8
MARK
TOP
ADD
Features
PUSH-PULL
OUTPUTS
T1633-4
CODE
E16-4
8
4
4
PKG
1

Related parts for MAX7322AEE+

MAX7322AEE+ Summary of contents

Page 1

... INT Output Alerts Change on Any Selection of Inputs ♦ AD0 and AD2 Inputs Select from 16 Slave Addresses ♦ Low 0.6µA (typ) Standby Current ♦ -40°C to +125°C Operating Temperature Range PART MAX7322AEE+ MAX7322ATE+ +Denotes lead-free package. Applications *EP = Exposed paddle. PART MAX7319 ...

Page 2

I C Port Expander with 4 Push-Pull Outputs and 4 Inputs ABSOLUTE MAXIMUM RATINGS (All voltages referenced to GND.) Supply Voltage V+....................................................-0.3V to +6V SCL, SDA, AD0, AD2, RST, INT, I2–I5......................-0.3V to +6V O0, O1, O6, O7 .................................................-0.3 to ...

Page 3

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 Output Data Valid Port Input Setup Time Port Input ...

Page 4

I C Port Expander with 4 Push-Pull Outputs and 4 Inputs (T = +25°C, unless otherwise noted.) A STANDBY CURRENT vs. TEMPERATURE 2.0 1.8 1.6 1.4 1 +5.0V 1 +3. +2.5V 0.8 0.6 ...

Page 5

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 MAX7324–MAX7327 family consists of four pin- compatible, 16-port expanders ...

Page 6

I C Port Expander with 4 Push-Pull Outputs and 4 Inputs Table 1. MAX7319–MAX7329 Family Comparison (continued PART SLAVE INPUTS INTERRUPT ADDRESS MAX7321 110xxxx MAX7322 110xxxx 4 MAX7323 110xxxx MAX7328 ...

Page 7

Table 1. MAX7319–MAX7329 Family Comparison (continued SLAVE INTERRUPT PART INPUTS ADDRESS 16-PORT EXPANDERS MAX7324 8 MAX7325 101xxxx and 110xxxx MAX7326 4 MAX7327 When the MAX7322 is read through the serial interface ...

Page 8

I C Port Expander with 4 Push-Pull Outputs and 4 Inputs On initial power-up, the MAX7322 cannot decode the address inputs AD2 and AD0 fully until the first I transmission. AD0 and AD2 initially appear to be con- nected ...

Page 9

The snap- shot is continuously compared with the actual input conditions, and if a change is detected for any port input, then an internal transition flag is set for that port, and INT is asserted ...

Page 10

I C Port Expander with 4 Push-Pull Outputs and 4 Inputs SDA operates as both an input and an open-drain out- put. A pullup resistor, typically 4.7kΩ, is required on SDA. SCL operates only as an input. A pullup ...

Page 11

The MAX7322 has a 7-bit-long slave address (Figure 5). The eighth bit following the 7-bit slave address is the R/W bit low for a write command, and high for a read command. The first (A6), second (A5), and ...

Page 12

I C Port Expander with 4 Push-Pull Outputs and 4 Inputs Reading from the MAX7322 A read from the MAX7322 starts with the master trans- mitting the MAX7322’s slave address with the R/W bit set high. The MAX7322 acknowledges ...

Page 13

INT remains high until the STOP condition. Writing to the MAX7322 A write to the MAX7322 starts with ...

Page 14

I C Port Expander with 4 Push-Pull Outputs and 4 Inputs Each of the four output ports O0, O1, O6, and O7 has protection diodes to V+ and to GND port output is driven to a voltage lower than ...

Page 15

Functional Diagram AD0 AD2 SCL INPUT CONTROL SDA FILTER POWER- RST ON RESET MAX7322 Pin Configurations (continued) TOP VIEW + AD0 1 16 RST 2 15 AD2 3 14 MAX7322 ...

Page 16

I C Port Expander with 4 Push-Pull Outputs and 4 Inputs (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 D/2 ...

Page 17

For the latest package outline information www.maxim-ic.com/packages.) PKG 8L 3x3 12L 3x3 REF. MIN. NOM. MAX. MIN. NOM. MAX. A 0.70 0.75 0.80 0.70 ...

Page 18

... 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. 18 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2006 Maxim Integrated Products Package Information (continued) PACKAGE OUTLINE, QSOP .150" ...

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