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参数资料
| 型号： | MAX7324ATG+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 8/20页 |
| 文件大小： | 0K |
| 描述： | IC I/O EXPANDER I2C 8B 24TQFN-EP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 接口： | I²C |
| 输入/输出数： | 8 |
| 中断输出： | 是 |
| 频率 - 时钟： | 400kHz |
| 电源电压： | 1.71 V ~ 5.5 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-WFQFN 裸露焊盘 |
| 供应商设备封装： | 24-TQFN-EP（4x4） |
| 包装： | 带卷 (TR) |
| 包括： | POR |
MAX7324
Set the port output low to light the LED. Choose the
resistor value according to the following formula:
RLED = (VSUPPLY - VLED - VOL) / ILED
where:
RLED is the resistance of the resistor in series with the
LED ().
VSUPPLY is the supply voltage used to drive the LED
(V).
VLED is the forward voltage of the LED (V).
VOL is the output low voltage of the MAX7324 when
sinking ILED (V).
ILED is the desired operating current of the LED (A).
For example, to operate a 2.2V red LED at 10mA from
+5V supply:
RLED = (5 - 2.2 - 0.1) / 0.01 = 270
Driving Load Currents Higher than 20mA
The MAX7324 can be used to drive loads such as
relays that draw more than 20mA by paralleling out-
puts. Use at least one output per 20mA of load current;
for example, a 5V 330mW relay draws 66mA, and
therefore, requires four paralleled outputs. Any combi-
nation of outputs can be used as part of a load-sharing
design because any combination of ports can be set or
cleared at the same time by writing to the MAX7324. Do
not exceed a total sink current of 100mA for the device.
Protect the MAX7324 from the negative voltage tran-
sient generated when switching off inductive loads
(such as relays) by connecting a reverse-biased diode
across the inductive load. Choose the peak current for
the diode to be greater than the inductive load's oper-
ating current.
Power-Supply Considerations
The MAX7324 operates with a supply voltage of
+1.71V to +5.5V over the -40°C to +125°C tempera-
ture range. Bypass the supply to GND with a ceramic
capacitor of at least 0.047F as close as possible to
the device. For the TQFN version, additionally connect
the exposed pad to GND.
I2C Port Expander with Eight Push-Pull Outputs
and Eight Inputs
16
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX7324EVCMAXQU+ | 功能描述:界面开发工具 Maxim Evaluation System RoHS:否 制造商:Bourns 产品:Evaluation Boards 类型:RS-485 工具用于评估:ADM3485E 接口类型:RS-485 工作电源电压:3.3 V |
| MAX7324EVKIT+ | 功能描述:界面开发工具 Evaluation Kit/Evaluation System for the MAX7324 RoHS:否 制造商:Bourns 产品:Evaluation Boards 类型:RS-485 工具用于评估:ADM3485E 接口类型:RS-485 工作电源电压:3.3 V |
| MAX7325 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:I2C Port Expander with 8 Push-Pull and 8 Open-Drain I/Os |
| MAX7325_12 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:I2C Port Expander with 8 Push-Pull and 8 Open-Drain I/Os |
| MAX7325AEG | 功能描述:接口-I/O扩展器 I2C Port Expander w/8 P-P Out & 8 I/O RoHS:否 制造商:NXP Semiconductors 逻辑系列: 输入/输出端数量: 最大工作频率:100 kHz 工作电源电压:1.65 V to 5.5 V 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:HVQFN-16 封装:Reel |
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