MAX7321AEE+T Maxim Integrated Products, MAX7321AEE+T Datasheet

IC I/O EXPANDER I2C 8B 16QSOP

MAX7321AEE+T

Manufacturer Part Number
MAX7321AEE+T
Description
IC I/O EXPANDER I2C 8B 16QSOP
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of MAX7321AEE+T

Interface
I²C
Number Of I /o
8
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 MAX7321 2-wire serial-interfaced peripheral fea-
tures eight open-drain I/O ports with selectable internal
pullups and transition detection. Any port may be used
as a logic input or an open-drain output. Ports are over-
voltage protected to +6V independent of supply voltage.
All I/O ports configured as inputs are continuously
monitored for state changes (transition detection).
State changes are indicated by the open-drain INT
output. The interrupt is latched, allowing detection of
transient changes. When the MAX7321 is subsequent-
ly 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 MAX7321 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 MAX7321 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 MAX7321 is available in 16-pin QSOP and TQFN
packages, and is specified over the automotive temper-
ature range (-40°C to +125°C).
19-3738; Rev 1; 4/06
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.
Cell Phones
SAN/NAS
Servers
2
C communication to or from the MAX7321.
GND
AD0
AD2
RST
P0
P1
P2
P3
I
________________________________________________________________ Maxim Integrated Products
1
2
6
2
3
4
5
7
8
+
2
C Port Expander with 8 Open-Drain I/Os
+
C slave addresses. The slave
MAX7321
General Description
QSOP
Pin Configurations
Notebooks
Satellite Radio
Automotive
16
15
14
13
12
11
10
9
Applications
V+
SDA
SCL
INT
P7
P6
P5
P4
♦ 400kHz I
♦ +1.71V to +5.5V Operating Voltage
♦ 8 Open-Drain I/O Ports Rated to 20mA Sink Current
♦ I/O Ports Are Overvoltage Protected to +6V
♦ Any Port Can Be a Logic Input or an Open-Drain
♦ Selectable I/O Port Power-Up Default Logic States
♦ 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
**EP = Exposed paddle.
+Denotes lead-free package.
Pin Configurations are continued at end of data sheet.
Typical Application Circuit and Functional Diagram appear
at end of data sheet.
MAX7321AEE+
MAX7321ATE+
MAX7319
MAX7320
MAX7321
MAX7322
MAX7323
MAX7328
MAX7329
PART
Output
Between Read Operations
Addresses
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**
Selector Guide
OUTPUTS
Up to 8
Up to 4
Up to 8
Up to 8
OPEN-
DRAIN
MARK
ADC
TOP
Features
PUSH-PULL
OUTPUTS
T1633-4
CODE
E16-4
8
4
4
PKG
1

Related parts for MAX7321AEE+T

MAX7321AEE+T Summary of contents

Page 1

... P3 7 GND 8 QSOP ________________________________________________________________ Maxim Integrated Products 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. ♦ 400kHz I ♦ +1.71V to +5.5V Operating Voltage ♦ 8 Open-Drain I/O Ports Rated to 20mA Sink Current ♦ I/O Ports Are Overvoltage Protected to +6V ♦ ...

Page 2

I C Port Expander with 8 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, P0–P7 ...................-0.3V to +6V P0–P7 Sink Current ............................................................ 25mA SDA Sink Current ...

Page 3

I C Port Expander with 8 Open-Drain I/Os 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 8 Open-Drain I/ +25°C, unless otherwise noted.) A STANDBY CURRENT vs. TEMPERATURE 2 0kHz SCL 1.8 1.6 1.4 1 +5.0V 1 +3. +2.5V 0.8 ...

Page 5

I C Port Expander with 8 Open-Drain I/Os 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. ...

Page 6

I C Port Expander with 8 Open-Drain I/Os Table 1. MAX7319–MAX7329 Family Comparison (continued PART SLAVE INPUTS INTERRUPT ADDRESS MAX7323 110xxxx MAX7328 0100xxx MAX7329 0111xxx 16-PORT EXPANDERS MAX7324 8 101xxxx ...

Page 7

I C Port Expander with 8 Open-Drain I/Os Table 2. Read and Write Access to Eight-Port Expander Family SLAVE INTERRUPT PART INPUTS ADDRESS MAX7319 110xxxx 8 MAX7320 101xxxx — MAX7321 110xxxx MAX7322 110xxxx ...

Page 8

I C Port Expander with 8 Open-Drain I/Os Table 3. MAX7321 Address Map PIN CONNECTION AD2 AD0 A6 A5 SCL GND 1 1 SCL SCL SCL 1 1 SCL SDA 1 1 SDA GND 1 1 ...

Page 9

I C Port Expander with 8 Open-Drain I/Os 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 MAX7321 operates as a slave that sends and 2 ...

Page 10

I C Port Expander with 8 Open-Drain I/Os Accessing the MAX7321 The MAX7321 is accessed through an I transition flags are cleared, and INT is deasserted each time the device acknowledges the I A single-byte read from the MAX7321 ...

Page 11

I C Port Expander with 8 Open-Drain I/ SDA MSB SCL Figure 5. Slave Address MAX7321 SLAVE ADDRESS SCL PORT I INT OUTPUT Figure 6. Reading the MAX7321 (1 Data ...

Page 12

I C Port Expander with 8 Open-Drain I/ SCL SLAVE ADDRESS S SDA START CONDITION INTERNAL WRITE TO PORT DATA OUT FROM PORT S = START CONDITION P = STOP CONDITION Figure 8. Writing ...

Page 13

I C Port Expander with 8 Open-Drain I/Os AD0 AD2 SCL SDA RST Driving LED Loads When driving LEDs, a resistor must be fitted in series with the LED to limit the LED current to no more than 20mA. ...

Page 14

I C Port Expander with 8 Open-Drain I/Os Driving Load Currents Higher than 20mA The MAX7321 can be used to drive loads, such as relays, that draw more than 20mA by paralleling out- puts. Use at least one output ...

Page 15

I2C Port Expander with 8 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.) ______________________________________________________________________________________ Package Information 15 ...

Page 16

I2C Port Expander with 8 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 D 0.10 C ...

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. 17 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2006 Maxim Integrated Products ...

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