TCAL6408中文资料具有中断、复位和灵活 I/O 配置的 8 位转换 I²C 总线/SMBus I/O 扩展器数据手册TI规格书

描述 Description

The TCAL6408 device provides general purpose parallel input/output (I/O) expansion for the two-line bidirectional I2C bus (or SMBus) protocol. The device can operate with a power supply voltage ranging from 1.08 V to 3.6 V on the I2C bus side (VCCI) and a power supply voltage ranging from 1.08 V to 3.6 V on the P-port side (VCCP).

The device supports 100-kHz (Standard-mode), 400-kHz (Fast-mode), and 1-MHz (fast-mode-plus) I2C clock frequencies. I/O expanders such as the TCAL6408 provide a simple solution when additional I/Os are needed for switches, sensors, push-buttons, LEDs, fans, and so on.

The TCAL6408 has Agile I/O ports which include additional features designed to enhance the I/O performance in terms of speed, power consumption and EMI. The additional features are: programmable output drive strength, programmable pull-up and pull-down resistors, latchable inputs, maskable interrupt, interrupt status register, and programmable open-drain or push-pull outputs.

特性 Features

• Operating power-supply voltage range of 1.08 V to 3.6 V
• Allows bidirectional voltage-level translation and GPIO expansion between 1.2-V, 1.8-V, 2.5-V, and 3.3-V I2C bus and p-ports
• Low standby current consumption of 1 µA typical at 1.8 V
• 1-MHz fast mode plus I2C bus
• Hardware address pin allows two devices on the same I2C, SMBus bus
• Active-low reset input (RESET )
• Open-drain active-low interrupt output (INT )
• Input or output configuration register
• Polarity inversion register
• Configurable I/O drive strength register
• Pull-up and pull-down resistor configuration register
• Internal power-on reset
• Noise filter on SCL or SDA inputs
• Latched outputs with high-current drive maximum capability for directly driving LEDs
• Latch-up performance exceeds 100 mA per JESD 78, class II
• ESD protection exceeds JESD 22
• 4000-V Human-body model (A114-A)
• 1000-V Charged-device model (C101)