The TCA6408A is a 16-pin device that provides 8-bits of general purpose parallel input/output (I/O) expansion for the two-line bidirectional I2C bus (or SMBus) protocol. This device can operate with a power supply voltage ranging from 1.65 V to 5.5 V on both the I2C bus side (VCCI) and on the P-port side (VCCP). This allows the TCA6408A to interface with next-generation microprocessors and microcontrollers on the SDA/SCL side, where supply levels are dropping down to conserve power. In contrast to the dropping power supplies of microprocessors and microcontrollers, some PCB components such as LEDs remain at a 5-V power supply. The device supports both 100-kHz (Standard-mode) and 400-kHz (Fast-mode) clock frequencies. I/O expanders such as the TCA6408A provide a simple solution when additional I/Os are needed for switches, sensors, push-buttons, LEDs, fans, and so forth.
I/O EXPANDER, 8BIT, 400KHZ, VQFN-16; Chip Configuration:8bit; Bus Frequency:400kHz; IC Interface Type:I2C, SMBus; Supply Voltage Min:1.65V; Supply Voltage Max:5.5V; Interface Case Style:VQFN; No. of Pins:16Pins; No. of I/O s:8I/O s RoHS Compliant: Yes Newark Electronics
I2C and SMBus I/O Expander 16-Pin VQFN EP T/R Avnet America
I2C and SMBus I/O Expander 16-Pin VQFN EP T/R Avnet Europe