TEXAS INSTRUMENTS TCA9555RGER 输入/输出扩展, 16bit, 400 kHz, I2C, SMBus, 1.65 V, 5.5 V, VQFN 新
This 16-bit I/O expander for the two-line bidirectional bus I2C is designed for 1.65-V to 5.5-V VCC operation. It provides general-purpose remote I/O expansion for most microcontroller families via the I2C interface.
The TCA9555 consists of two 8-bit Configuration input or output selection, Input Port, Output Port, and Polarity Inversion active high or active low operation registers. At power on, the I/Os are configured as inputs. The system master can enable the I/Os as either inputs or outputs by writing to the I/O configuration bits. The data for each input or output is kept in the corresponding Input or Output register. The polarity of the Input Port register can be inverted with the Polarity Inversion register.
The TCA9555 is identical to the TCA9535, except for the inclusion of the internal I/O pull-up resistor, which pulls the I/O to a default high when configured as an input and undriven.
Three hardware pins A0, A1, and A2 are used to program the I2C address, which allows up to eight TCA9555 devices to share the same I2C bus or SMBus. The fixed I2C address of the TCA9555 is the same as the PCF8575, PCF8575C, and PCF8574, allowing up to eight of these devices in any combination to share the same I2C bus or SMBus.
电源电压DC 1.65V min
针脚数 24
时钟频率 400 kHz
电压波节 1.80 V, 2.70 V, 3.30 V, 3.60 V, 5.00 V
输入/输出数 16 Input
工作温度Max 85 ℃
工作温度Min -40 ℃
电源电压 1.65V ~ 5.5V
电源电压Max 5.5 V
电源电压Min 1.65 V
安装方式 Surface Mount
引脚数 24
封装 VQFN-24
封装 VQFN-24
工作温度 -40℃ ~ 85℃
产品生命周期 Active
包装方式 Cut Tape CT
RoHS标准 RoHS Compliant
含铅标准 Lead Free
REACH SVHC版本 2015/06/15
ECCN代码 EAR99