PCA6408APW,118

PCA6408APW,118 is an 8bit general-purpose I/O expander that provides remote I/O expansion for most microcontroller families via the I²C-bus interface. NXP I/O expanders provide a simple solution when additional I/Os are needed while keeping interconnections to a minimum, for example, in battery-powered mobile applications for interfacing to sensors, push buttons, keypads, etc. In addition to providing a flexible set of GPIOs, it simplifies the interconnection of a processor running at one voltage level to I/O devices operating at a different (usually higher) voltage level. The PCA6408A has a built-in level shifting feature that makes these devices extremely flexible in mixed signal environments where communication between incompatible I/O voltages is required.

• I²C-bus to parallel port expander, operating power supply voltage range of 1.65V to 5.5V
• 5V tolerant I/O ports, active low reset input (RESET)
• Open-drain active LOW interrupt output (INT), 400KHz fast-mode I²C-bus
• Input/output configuration register, polarity inversion register
• Internal power-on reset, power-up with all channels configured as inputs
• No glitch on power-up, noise filter on SCL/SDA inputs
• Latch-up performance exceeds 100mA per JESD 78, Class II
• Latched outputs with 25mA drive maximum capability for directly driving LEDs
• Supply current is 10µA typical at (VDD(P) = 3.6V to 5.5V)
• Operating temperature range from -40°C to 85°C, TSSOP16 package