TEXAS INSTRUMENTS TCA7408ZSZR 芯片, 输入/输出扩展器, 8位, 400KHZ, UCSP-16
TCA7408 is an 8-bit I/O expander for the two-line bidirectional bus I2C and is designed to provide general-purpose remote I/O expansion through the I2C interface.
The major benefit of this device is its wide VCC range. It can operate from 1.65 V to 3.6 V on the GPIO-port side and 1.65 V to 5.5 V on the SDA/SCL side. This allows the TCA7408 to interface with next-generation microprocessors and microcontrollers on the SDA/SCL side, where supply levels are dropping down to conserve power.
The bidirectional voltage-level translation in the TCA7408 is provided through VCCI. VCCI should be connected to the VCC of the external SCL/SDA lines. The voltage level on the GPIO-port of the TCA7408 is determined by VCCP.
At power on, the I/Os are configured as inputs; however, the system master can enable the I/Os as either inputs or outputs by writing to the I/O direction bits. The data for each input or output is kept in the corresponding Input or Output register. All registers can be read by the system master.
TCA7408 has open-drain interrupt INT output pin that goes LOW when the input state of a GPIO-port changes from the input-state default register value. The device also has an interrupt masking feature by which the user can mask the interrupt from an individual GPIO-port.
电源电压DC 1.65V ~ 5.50V
输出接口数 8
针脚数 16
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 8 Input
工作温度Max 85 ℃
工作温度Min -40 ℃
电源电压 1.65V ~ 3.6V
电源电压Max 5.5 V
电源电压Min 1.65 V
输入电压 1.65V ~ 3.6V
安装方式 Surface Mount
引脚数 16
封装 UCSP-16
封装 UCSP-16
工作温度 -40℃ ~ 85℃
产品生命周期 Active
包装方式 Tape & Reel TR
RoHS标准 RoHS Compliant
含铅标准 Lead Free
REACH SVHC版本 2015/06/15
ECCN代码 EAR99
香港进出口证 NLR