PCA9571GUX

输入/输出扩展, 8bit, 400 kHz, I2C, SMBus, 1.1 V, 3.6 V, XQFN

Overview

The PCA9571 is a CMOS device that provide 8 bits of General Purpose parallel Output GPO expansion in low voltage processor and handheld battery powered mobile applications. They operate at 1 MHz I²C-bus speeds on a lightly loaded bus <100 pF while maintaining backward compatibility to Fast-mode 400 kHz and Standard-mode 100 kHz.

The PCA9571 is a streamlined GPO that consists of 8-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 PCA9571 output expanders provide 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 PCA9571 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: XQFN12, TSSOP14 and DHVQFN14

## Target Applications

* Smartphones and tablets

* Portable medical equipment

* Portable instrumentation and test measurement

## Features