PCAL6524超低電壓輸入/輸出擴(kuò)展器

恩XP PCAL6524超低電壓輸入/輸出擴(kuò)展器通過快速模式Plus (Fm+) I2C總線接口為大部分微控制器提供遠(yuǎn)程輸入/輸出擴(kuò)展。 PCAL6524 24位通用輸入/輸出擴(kuò)展器配有一個超低電壓接口，用于直接連接到微控制器。 當(dāng)需要額外輸入/輸出同時又要將互連要求降至最低時， 恩XP輸入/輸出擴(kuò)展器就是一個簡易的解決方案。這對電池供電移動應(yīng)用特別有用，可用于連接傳感器、按鈕和按鍵。
特性

_I2C-bus to parallel port expanders
_Operating power supply voltage range of 0.8V to 3.6V on the I2C-bus side
_Allows bidirectional voltage-level translation and_GPIO expansion between 0.8V to 3.6V SCL/SDA and_1.8V, 2.5V, 3.3V, 5.5V Port P
_Low standby current consumption, 2.0μA typical at 3.3V VDD(P)
_Schmitt trigger action allows slow input transition and_better switching noise immunity at the SCL and_SDA inputs
_Vhys = 0.05V (typical) at 0.8V
_Vhys = 0.18V (typical) at 1.8V
_Vhys = 0.33V (typical) at 3.3V

_1MHz Fast-mode Plus I2C-bus
_5.5V tolerant I/O ports and_3.6V tolerant I2C-bus pins
_Active LOW reset input (RESET)
_Open-drain active LOW interrupt output (INT)
_Internal power-on reset
_Noise filter on SCL/SDA inputs
_Latched outputs with 25mA drive maximum capability for directly driving LEDs
_Latch-up performance exceeds 100mA per JESD 78, Class II
_ESD protection exceeds JESD 22
_2000V Human-Body Model (A114-A)
_1000V Charged-Device Model (C101)
_TSSOP32 and_HUQFN32 packages offered