Overview
●The PCA9570 is a CMOS device that provides 4 bits of General Purpose parallel Output (GPO) expansion in low voltage processor and handheld battery powered mobile applications. It operates at 1 MHz I²C‑bus speeds while maintaining backward compatibility to Fast-mode (400 kHz) and Standard-mode (100 kHz).
●The PCA9570 is a streamlined GPO that consists of 4-bit push-pull outputs that offer low current consumption, small packaging options and a low operating voltage range of 1.1 V to 3.6 V. The latched outputs are symmetrical 4 mA current drive capability at 3.3 V to drive various control logic. The PCA9570 output expander provides a simple solution when additional outputs are needed while keeping interconnections and floor space to a minimum, for example, in battery powered mobile applications where PCBs are crowded for interfacing to sensors, push buttons, etc.
●The PCA9570 contains an internal Power-On Reset (POR) and a Software Reset feature that initializes the device to its default state.
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●## Features
● 1 MHz I²C-bus interface with 6 mA SDA sink capability for lightly loaded buses (<100 pF) and improved power consumption
● Compliant with the I²C-bus Fast and Standard modes
● 1.1 V to 3.6 V operation
● Latched outputs with a sink/source capability of 4 mA at 3.3 V
● Readable device ID (manufacturer, device type, and revision)
● Software Reset
● Power-On Reset
● Low standby current
● -40 °C to +85 °C operation
● ESD protection exceeds 2000 V HBM per JESD22-A114 and 1000 V CDM per JESD22-C101
● Latch-up testing is done to JEDEC standard JESD78 which exceeds 100 mA
● Packages offered: TSSOP8, XQFN8 (0.4 mm lead pitch), XQFN8 (0.5 mm lead pitch)
●## Target Applications
● Smart phones and tablets
● Portable medical equipment
● Portable instrumentation and test measurement
●## Features
