MAX7304

I²C接口、16端口、电平转换GPIO和LED驱动器,内置ESD保护

16端口GPIO,可配置为PWM控制的LED驱动器,内置ESD保护,有效降低成本


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说明

The MAX7304 consists of 16 port GPIOs, with 12 push-pull GPIOs and four open-drain GPIOs configurable as PWM-controlled LED drivers. The device supports a 1.62V to 3.6V separate power supply for level translation. An address-select input (AD0) allows up to four unique slave addresses for the device.

Each GPIO can be programmed to one of the two externally applied logic voltage levels. PORT15–PORT12 can also be configured as LED drivers that feature constant-current sinks and PWM intensity control with the internal oscillator. The maximum constant-current level for each open-drain LED port is 20mA. The intensity of the LED on each open-drain port can be individually adjusted through a 256-step PWM control. The port also features LED fading.

The same index rows and columns in the device can be used as a direct logic-level translator.

The device is offered in a 24-pin (3.5mm x 3.5mm) TQFN package with an exposed pad, and a small 25-bump (2.159mm x 2.159mm) wafer-level package (WLP) for cell phones, pocket PCs, and other portable consumer electronic applications.

The device operates over the -40°C to +85°C extended temperature range.
MAX7304: Functional Diagam MAX7304: Functional Diagram 放大+

关键特性

  • Four LED Driver Pins on PORT15–PORT12
  • Integrated High-ESD Protection
    • ±8kV IEC 61000-4-2 Contact Discharge
    • ±15kV IEC 61000-4-2 Air-Gap Discharge
  • 5V Tolerant, Open-Drain I/O Ports Capable of Constant-Current LED Drive
  • 256-Step PWM Individual LED Intensity-Control Accuracy
  • Individual LED Blink Rates and Common LED Fade-In/Out Rates from 256ms to 4096ms
  • User-Configurable Debounce Time (1ms to 32ms)
  • Configurable Edge-Triggered Port Interrupt (Active-Low INT)
  • 1.62V to 3.6V Operating Supply Voltage
  • Individually Programmable GPIOs to Two Logic Levels
  • 8-Channel Individual Programmable Level Translators
  • Supports Hot Insertion
  • 400kbps, 5.5V Tolerant I²C Serial Interface with Selectable Bus Timeout

应用

  • 蜂窝电话
  • 手持式游戏机
  • 笔记本电脑
  • PDA
  • 便携式消费类电子

请查看具体的参数规格 I/O Port Expanders (31)


Part NumberInterfaceI/OInputsOutputsInterrupt OutputDrive Current
(mA)
VSUPPLY
(V)
VSUPPLY
(V)
Package/Pins
(min)(max)
MAX7304 
Serial - I2C Compatible
Serial 2-Wire 400kbit
161616Yes201.623.6
TQFN-CU/24

Pricing Notes:
价格仅供参考,用于同类产品的比较。所提供报价为美元,需要依汇率折合成人民币。该价格将因当地关税、税率和汇率而异。有关特定订购量和指定版本的报价和供货问题,请参考:价格与供货网站或与指定代理商联系。

MAXPMBAE: Maxim模拟外设模块集锦
产品可靠性报告: MAX7304.pdf 
型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C   Material Composition  

备注: 通过技术手段对故障率进行汇总,并映射到相关的材料部件号。 故障率与被测件的数量密切相关。

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