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MAX7321ASE

更新时间: 2024-02-27 16:59:14
品牌 Logo 应用领域
美信 - MAXIM 并行IO端口微控制器和处理器光电二极管信息通信管理
页数 文件大小 规格书
17页 663K
描述
I2C Port Expander with 8 Open-Drain I/Os

MAX7321ASE 技术参数

是否Rohs认证: 不符合生命周期:Active
Reach Compliance Code:not_compliant风险等级:5.88
Is Samacsys:NJESD-30 代码:R-PDSO-G20
JESD-609代码:e0位数:1
端子数量:20最高工作温度:125 °C
最低工作温度:-40 °C封装主体材料:PLASTIC/EPOXY
封装代码:TSSOP封装等效代码:TSSOP20,.25
封装形状:RECTANGULAR封装形式:SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
电源:2/5 V认证状态:Not Qualified
子类别:Parallel IO Port表面贴装:YES
技术:BICMOS温度等级:AUTOMOTIVE
端子面层:Tin/Lead (Sn/Pb)端子形式:GULL WING
端子节距:0.635 mm端子位置:DUAL
Base Number Matches:1

MAX7321ASE 数据手册

 浏览型号MAX7321ASE的Datasheet PDF文件第2页浏览型号MAX7321ASE的Datasheet PDF文件第3页浏览型号MAX7321ASE的Datasheet PDF文件第4页浏览型号MAX7321ASE的Datasheet PDF文件第5页浏览型号MAX7321ASE的Datasheet PDF文件第6页浏览型号MAX7321ASE的Datasheet PDF文件第7页 
19-3738; Rev 0; 7/05  
2
I C Port Expander with 8 Open-Drain I/Os  
General Description  
Features  
400kHz, +6V Tolerant I2C Serial Interface  
The MAX7321 2-wire serial-interfaced peripheral features  
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 overvoltage pro-  
tected to +6V independent of supply voltage.  
+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  
All I/O ports configured as inputs are continuously mon-  
itored for state changes (transition detection). State  
changes are indicated by the open-drain, +6V tolerant  
INT output. The interrupt is latched, allowing detection  
of transient changes. When the MAX7321 is subse-  
quently accessed through the serial interface, any  
pending interrupt is cleared.  
Any Port Can Be a Logic Input or an Open-Drain  
Output  
Selectable I/O Port Power-Up Default Logic Levels  
Transient Changes Are Latched, Allowing Detection  
Between Read Operations  
INT Output Alerts Change on Inputs  
The open-drain outputs are rated to sink 20mA and are  
capable of driving LEDs.  
AD0 and AD2 Inputs Select from 16 Slave  
The +6V tolerant RST input clears the serial interface,  
terminating any I2C* communication to or from the  
MAX7321.  
The MAX7321 uses two address inputs with four-level  
logic to allow 16 I2C slave addresses. The slave  
address also determines the power-up logic level for  
the I/O ports, and enables or disables internal 40k  
pullups in groups of four ports.  
The MAX7321 supports hot insertion. All eight I/O ports,  
the serial interface SDA, SCL, AD0, AD2, INT, and RST  
remain high impedance in power-down (V+ = 0) with  
up to +6V asserted on them.  
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 16-pin  
TQFN packages, and is specified over the automotive  
temperature range (-40°C to +125°C).  
Addresses  
Low 0.6µA (typ), 1.5µA (max) Standby Current  
-40°C to +125°C Operating Temperature  
Ordering Information  
TEMP  
PIN-  
TOP  
PKG  
PART  
RANGE PACKAGE  
MARK CODE  
-40°C to  
16 QSOP  
+125°C  
MAX7321AEE  
E16-4  
16 TQFN  
-40°C to  
3mm x 3mm  
+125°C  
MAX7321ATE  
ADC T1633-4  
x 0.8mm  
-40°C to  
16 SO  
MAX7321ASE*  
MAX7321AUP*  
MAX7321AAP*  
+125°C  
-40°C to  
20 TSSOP  
+125°C  
-40°C to  
20 SSOP  
+125°C  
Applications  
Cell Phones  
SAN/NAS  
Servers  
Notebooks  
*Future product—contact factory for availability.  
Satellite Radio  
Automotive  
Selector Guide  
OPEN-  
INTERRUPT  
MASK  
PUSH-PULL  
DRAIN  
PART  
INPUTS  
OUTPUTS  
OUTPUTS  
MAX7319  
MAX7320  
8
Yes  
8
Pin Configurations, Typical Application Circuit, and  
Functional Diagram appear at end of data sheet.  
MAX7321 Up to 8  
MAX7322  
Up to 8  
4
*Purchase of I2C components from Maxim Integrated Products,  
Inc., or one of its sublicensed Associated Companies, conveys  
a license under the Philips I2C Patent Rights to use these com-  
ponents in an I2C system, provided that the system conforms  
to the I2C Standard Specification as defined by Philips.  
4
Yes  
MAX7323 Up to 4  
MAX7328 Up to 8  
MAX7329 Up to 8  
Up to 4  
Up to 8  
Up to 8  
4
________________________________________________________________ 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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