NXP Semiconductors PCA8574A
The PCA8574/74A provides general-purpose remote I/O expansion via the two-wire bidirectional I2C-bus (serial clock (SCL), serial data (SDA)). The devices consist of eight quasi-bidirectional ports, 400 kHz I2C-bus interface, three hardware address inputs and interrupt output operating between 2.3 V and 5.5 V. The quasi-bidirectional port can be independently assigned as an input to monitor interrupt status or keypads, or as an output to activate indicator devices such as LEDs.| Part No. | PCA8574A |
|---|---|
| Datasheet | PCA8574A Download |
| Manufacturer |  NXP Semiconductors |
| Description | Remote 8-bit I/O expander |
| Buy | Stock & Price |
FEATURES AND BENEFITS
● I2C-bus to parallel port expander● 400 kHz I2C-bus interface (Fast-mode I2C-bus)
● Operating supply voltage 2.3 V to 5.5 V with 5.5 V tolerant I/Os held to VDD with 100 A current source
● 8-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 200 mA
● Active LOW open-drain interrupt output
● Eight programmable slave addresses using three address pins
● Low standby current (4.5 A typical)
● 40 C to +85 C operation NXP Semiconductors PCA8574; PCA8574A Remote 8-bit I/O expander for I2C-bus with interrupt
● 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: SO16, TSSOP16, SSOP20 3.
APPLICATIONS
● LED signs and displays● Servers
● Key pads
● Industrial control
● Medical equipment
● PLCs
● Cellular telephones
● Mobile devices
● Gaming machines
● Instrumentation and test measurement 4.
