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MAX7311AUG

更新时间: 2024-01-23 02:09:53
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描述
2-Wire-Interfaced 16-Bit I/O Port Expander with Interrupt and Hot-Insertion Protection

MAX7311AUG 数据手册

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19-2747; Rev 4; 4/05  
2-Wire-Interfaced 16-Bit I/O Port Expander  
with Interrupt and Hot-Insertion Protection  
General Description  
Features  
400kbps I2C-Compatible Serial Interface  
The MAX7311 2-wire-interfaced expander provides 16-bit  
parallel input/output (I/O) port expansion for SMBus™  
and I2C™ applications. The MAX7311 consists of input  
port registers, output port registers, polarity inversion reg-  
isters, configuration registers, a bus timeout register, and  
an I2C-compatible serial interface logic compatible with  
SMBus. The system master can invert the MAX7311 input  
data by writing to the active-high polarity inversion regis-  
ter. The system master can enable or disable bus timeout  
by writing to the bus timeout register.  
2V to 5.5V Operation  
5V Overvoltage Tolerant I/Os  
Supports Hot Insertion  
16 I/O Pins that Default to Inputs on Power-Up  
100kPullup on Each I/O  
Open-Drain Interrupt Output (INT)  
Bus Timeout for Lock-Up-Free Operation  
Noise Filter on SCL / SDA Inputs  
64 Slave ID Addresses Available  
Low Standby Current (2.9µA typ)  
Polarity Inversion  
Any of the 16 I/O ports can be configured as an input or  
output. A power-on reset (POR) initializes the 16 I/Os  
as inputs. Three address select pins configure one of  
64 slave ID addresses.  
The MAX7311 supports hot insertion. All port pins, the  
INT output, SDA, SCL and the slave address inputs  
AD0–2 remain high impedance in power down (V+ =  
0V) with up to 6V asserted upon them.  
4mm 4mm, 0.8mm Thin QFN Package  
-40°C to +125°C Operation  
The MAX7311 is available in 24-pin SO, SSOP, TSSOP,  
and thin QFN packages and is specified over the -40°C  
to +125°C automotive temperature range.  
Ordering Information  
For applications requiring I/Os without pullup resistors,  
refer to the MAX7312 data sheet.  
PKG  
CODE  
PART  
TEMP RANGE PIN-PACKAGE  
Applications  
MAX7311AWG -40°C to +125°C 24 Wide SO  
MAX7311AAG -40°C to +125°C 24 SSOP  
Servers  
RAID Systems  
24 Thin QFN  
MAX7311ATG -40°C to +125°C  
(4mm 4mm)  
T2444-4  
Industrial Control  
Medical Equipment  
PLCs  
MAX7311AUG -40°C to +125°C 24 TSSOP  
SMBus is a trademark of Intel Corp.  
Purchase of I2C components of Maxim Integrated Products, Inc.  
or one of its sublicensed Associated Companies, conveys a  
license under the Phillips I2C Patent Rights to use these compo-  
nents in an I2C system, provided that the system conforms to the  
I2C Standard Specification as defined by Phillips.  
Instrumentation and Test Measurement  
Pin Configurations  
TOP VIEW  
18 17 16 15 14 13  
+
24 V  
INT  
AD1  
AD2  
I/O0  
I/O1  
I/O2  
I/O3  
I/O4  
I/O5  
1
2
3
4
5
6
7
8
9
SCL 19  
SDA 20  
V+ 21  
12 I/O10  
11 I/O9  
10 I/O8  
23 SDA  
22 SCL  
21 AD0  
20 I/O15  
19 I/O14  
18 I/O13  
17 I/O12  
16 I/O11  
15 I/O10  
14 I/O9  
13 I/O8  
MAX7311ATG  
INT  
AD1  
AD2  
GND  
I/O7  
I/O6  
22  
23  
24  
9
8
7
MAX7311  
1
2
3
4
5
6
THIN QFN  
I/O6 10  
I/O7 11  
GND 12  
TSSOP/SSOP/SO  
________________________________________________________________ Maxim Integrated Products  
1
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.  

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