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I/O Expanders | PCA9554
概览
PCA9554 是一个 CMOS 器件，为 I2C 和 SMBus 兼容应用提供 8 位并行输入/输出端口扩展。此 I/O 扩展器在需要附加 I/O 的应用中提供了简单方案：传感器、电源开关、LED、按钮和风扇。PCA9554 包括输入端口寄存器、输出端口寄存器、配置寄存器、极性反向寄存器和 I2C/SMBus 兼容串行接口。八个 I/O 中的任何一个都可通过写入到配置寄存器来配置为输入或输出。主系统可以通过写入有效高电平极性反向寄存器来反向 PCA9554 输入数据。PCA9554 具有有效低电平中断输出，用于向主系统指示输出状态已发生改变。该器件的扩展寻址功能允许最多 8 个器件共享同一总线。
- White Goods
- Handheld Devices
- Data Communications
- Dishwashers
- Washing Machines
- Cell Phones
- PDAs
- Digital Cameras
- Routers
- Hubs and Servers
- 400 kHz I2C Bus Compatible
- 2.3 V to 5.5 V Operation
- Low Standby Current
- 5 V Tolerant I/Os
- 8 I/O Pins that Default to Inputs at Power−up
- High Drive Capability
- Individual I/O Configuration
- Polarity Inversion Register
- Active Low Interrupt Output
- Internal Power−on Reset
- No Glitch on Power−up
- Noise Filter on SDA/SCL Inputs
- Cascadable up to 8 Devices
- Industrial Temperature Range
- 16−lead TSSOP Package
- These Devices are Pb−Free, Halogen Free/BFR Free and are RoHSCompliant
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PCA9554DTR2G
Obsolete
Pb
A
H
P
TSSOP-16
1
260
REEL
2000
N
8
8 Slave ID Addresses
2.3
5.5
Yes
Yes
No
10
Price N/A
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