General description

The PCA8575 provides general purpose remote I/O expansion for most microcontroller families via the two-line bidirectional I2C-bus (serial clock (SCL), serial data (SDA)).

The device consists of a 16-bit quasi-bidirectional port and an I2C-bus interface. The PCA8575 has a low current consumption and includes latched outputs with high current drive capability for directly driving LEDs.

Features

400 kHz I2C-bus interface

2.3 V to 5.5 V operation with 5.5 V tolerant I/Os

16-bit remote I/O pins that default to inputs at power-up

Latched outputs with 25 mA sink capability for directly driving LEDs

Total package sink capability of 400 mA

Active LOW open-drain interrupt output

8 programmable slave addresses using 3 address pins

Readable device ID (manufacturer, device type, and revision)

Low standby current (10μA max.)

?40°C to +85°C operation

ESD protection exceeds 2000 V HBM per JESD22-A114, 200 V MM per JESD22-A115, and 1000 V CDM per JESD22-C101

Latch-up testing is done to JEDEC standard JESD78 which exceeds 100 mA

Packages offered: SO24, SSOP24 (QSOP24), TSSOP24, HVQFN24, DHVQFN24

Applications

LED signs and displays

Servers

Industrial control

Medical equipment

PLCs

Cellular telephones

Gaming machines

Instrumentation and test measurement

PCA8575BS屬于集成電路（IC） > I/O 擴(kuò)展器。恩智浦半導(dǎo)體公司制造生產(chǎn)的PCA8575BSI/O 擴(kuò)展器該系列器件可與微控制器、微處理器或類似器件結(jié)合使用，目的是增加可用于連接外設(shè)的信號(hào)連接數(shù)量。典型的工作概念涉及使用串行通信，只需主機(jī)設(shè)備上的幾根 I/O 線，即可讀/寫擴(kuò)展器設(shè)備上的許多輸入/輸出引腳的狀態(tài)。該技術(shù)的通信速度不佳，但連通性較高，最適合快速響應(yīng)不是很關(guān)鍵的應(yīng)用，例如許多人機(jī)界面應(yīng)用。