PCA95380

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community PCA9538 SCPS126F – SEPTEMBER 2006 – REVISED JUNE 2014 PCA9538 Remote 8-Bit I2C AND SMBus Low-power I/O Expander With Interrupt Output, Reset, and Configuration Registers 1 Features 1 Low Standby Current Consumption of 1 μA Max I2C to Parallel Port Expander Open-Drain Active-Low Interrupt Output Active-Low Reset Input Operating Power-Supply Voltage Range of 2.3 V to 5.5 V 5-V Tolerant I/O Ports 400-kHz Fast I2C Bus Two Hardware Address Pins Allow up to Four Devices on the I2C/SMBus Input/Output Configuration Register Polarity Inversion Register Power-Up With All Channels Configured as Inputs No Glitch on Power Up Noise Filter on SCL/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 – 2000-V Human-Body Model (A114-A) – 200-V Machine Model (A115-A) – 1000-V Charged-Device Model (C101) 2 Description This 8-bit I/O expander for the two-line bidirectional bus (I2C) is designed for 2.3-V to 5.5-V VCC operation. It provides general-purpose remote I/O expansion for most microcontroller families via the I2C interface [serial clock (SCL), serial data (SDA)]. The PCA9538 consists of one 8-bit Configuration (input or output selection), Input Port, Output Port, and Polarity Inversion (active high or active low) registers. At power on, t...