TCA9539
- I2C to Parallel Port Expander
- Low Standby-Current Consumption
- Open-Drain Active-Low Interrupt Output
- Active-Low Reset Input
- 5-V Tolerant I/O Ports
- Compatible With Most Microcontrollers
- 400-kHz Fast I2C Bus
- Input and Output Configuration Register
- Polarity Inversion Register
- Internal Power-on Reset
- No Glitch on Power Up
- Noise Filter on SCL and SDA Inputs
- Address by Two Hardware Address Pins for Use
of up to Four Devices - Latched Outputs With High-Current Drive
Capability for Directly Driving LEDs - Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II - ESD Protection Exceeds JESD 22
- 2000-V Human-Body Model (A114-A)
- 1000-V Charged-Device Model (C101)
The TCA9539 is a 24-pin device that provides 16 bits of general purpose parallel input and output (I/O) expansion for the two-line bidirectional I2C bus (or SMBus protocol). The device can operate with a power supply voltage (VCC) range from 1.65 V to 5.5 V. The device supports 100-kHz (I2C Standard mode) and 400-kHz (I2C Fast mode) clock frequencies. I/O expanders such as the TCA9539 provide a simple solution when additional I/Os are needed for switches, sensors, push-buttons, LEDs, fans, and other similar devices.
The features of the TCA9539 include an interrupt that is generated on the INT pin whenever an input port changes state. The A0 and A1 hardware selectable address pins allow up to four TCA9539 devices on the same I2C bus. The device can be reset to its default state by cycling the power supply and causing a power-on-reset. Also, the TCA9539 has a hardware RESET pin that can be used to reset the device to its default state.
技术文档
| 顶层文档 | 类型 | 标题 | 格式选项 | 下载最新的英语版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 数据表 | TCA9539 Low Voltage 16-Bit I2C and SMBus Low-Power I/O Expander with Interrupt Output, Reset Pin, and Configuration Registers 数据表 (Rev. C) | PDF | HTML | 2016-4-26 | ||
| 应用手册 | I2C：什么是自动递增功能？ | PDF | HTML | 英语版 | PDF | HTML | 2024-7-12 | |
| 应用手册 | Understanding Transient Drive Strength vs. DC Drive Strength in Level-Shifters (Rev. A) | PDF | HTML | 2024-7-3 | |||
| 应用手册 | I2C Dynamic Addressing | 2019-4-25 | ||||
| 技术文章 | How to create a dynamic power solution for stepper motors, relays and LEDs | PDF | HTML | 2016-11-1 | |||
| 应用手册 | Choosing the Correct I2C Device for New Designs | PDF | HTML | 2016-9-7 | |||
| 选择指南 | I2C Infographic Flyer | 2015-12-3 | ||||
| 应用手册 | Understanding the I2C Bus | PDF | HTML | 2015-6-30 | |||
| 应用手册 | Maximum Clock Frequency of I2C Bus Using Repeaters | 2015-5-15 | ||||
| 应用手册 | I2C Bus Pull-Up Resistor Calculation | PDF | HTML | 2015-2-13 |
设计与开发
如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。
SLVC564 — I/O Expander Software and Firmware Package
I2C-DESIGNER — I2C 设计者工具
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| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| VQFN (RGE) | 24 | Ultra Librarian |
| WQFN (RTW) | 24 | Ultra Librarian |
| TSSOP (PW) | 24 | Ultra Librarian |
订购和质量
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