參數(shù)資料
型號(hào)： MAX7322ATE+
廠商： Maxim Integrated Products
文件頁數(shù)： 1/18頁
文件大?。?/td> 0K
描述： IC I/O EXPANDER I2C 4B 16TQFN-EP
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 100
接口： I²C
輸入/輸出數(shù)： 4
中斷輸出： 是
頻率 - 時(shí)鐘： 400kHz
電源電壓： 1.7 V ~ 5.5 V
工作溫度： -40°C ~ 125°C
安裝類型： 表面貼裝
封裝/外殼： 16-WFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝： 16-TQFN-EP（3x3）
包裝： 管件
包括： POR
General Description
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
I2C communication to or from the MAX7322.
The MAX7322 uses two address inputs with four-level
logic to allow 16 I2C slave addresses. The slave address
also sets the power-up default logic state for the four out-
put ports, and enables or disables internal 40k
Ω 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.
Applications
Features
400kHz I2C Serial Interface
+1.71V to +5.5V Operation Voltage
4 Push-Pull Output Ports Rated at 20mA Sink
Current
4 Input Ports with Maskable, Latching Transition
Detection
Input Ports are Overvoltage Protected to +6V
Transient Changes are Latched, Allowing
Detection Between Read Operations
INT Output Alerts Change on Any Selection of
Inputs
AD0 and AD2 Inputs Select from 16 Slave
Addresses
Low 0.6A (typ) Standby Current
-40°C to +125°C Operating Temperature Range
MAX7322
I2C Port Expander with
4 Push-Pull Outputs and 4 Inputs
________________________________________________________________ Maxim Integrated Products
1
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.
EVALUATION
KIT
AVAILABLE
Ordering Information
PART
TEMP
RANGE
PIN-
PACKAGE
TOP
MARK
PKG
CODE
MAX7322AEE+
-40°C to
+125°C
16 QSOP
—
E16-4
MAX7322ATE+
-40°C to
+125°C
16 TQFN-EP*
(3mm x 3mm)
ADD
T1633-4
Typical Application Circuit and Functional Diagram appear
at end of data sheet.
Cell Phones
SAN/NAS
Servers
Notebooks
Satellite Radio
Automotive
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 lead-free package.
*EP = Exposed paddle.
15
16
14
13
5
6
7
O1
I2
8
AD2
O7
O6
SCL
13
V+
4
12
10
9
AD0
RST
I5
I4
GND
I3
MAX7322
O0
INT
2
11
SDA
TQFN
(3mm x 3mm)
TOP VIEW
*EP
+
Pin Configurations
Pin Configurations continued at end of data sheet.
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