NXP Semiconductors PCF8574
The PCF8574 and PCF8574A are identical, except for the different fixed portion of the slave address. The three hardware address pins allow eight of each device to be on the same I2C-bus, so there can be up to 16 of these I/O expanders PCF8574/74A together on the same I2C-bus, supporting up to 128 I/Os (for example, 128 LEDs). The active LOW open-drain interrupt output (INT) can be connected to the interrupt logic of the microcontroller and is activated when any input state differs from its corresponding input port register state.| Part No. | PCF8574 |
|---|---|
| Datasheet | PCF8574 Download |
| Manufacturer |  NXP Semiconductors |
| Description | Remote 8-bit I/O expander |
| Buy | Stock & Price |
FEATURES AND BENEFITS
● I2C-bus to parallel port expander● 100 kHz I2C-bus interface (Standard-mode I2C-bus)
● Operating supply voltage 2.5 V to 6 V with non-overvoltage tolerant I/O held to VDD with 100 A current source
● 8-bit remote I/O pins that default to inputs at power-up
● Latched outputs directly drive LEDs
● Total package sink capability of 80 mA
● Active LOW open-drain interrupt output
● Eight programmable slave addresses using three address pins
● Low standby current (2.5 A typical)
● 40 C to +85 C operation
● ESD protection exceeds 2000 V HBM per JESD22-A114 and 1000 V CDM per JESD22-C101 NXP Semiconductors PCF8574; PCF8574A Remote 8-bit I/O expander for I2C-bus with interrupt
● Latch-up testing is done to JEDEC standard JESD78 which exceeds 100 mA
● Packages offered: DIP16, SO16, SSOP20 3.
APPLICATIONS
● LED signs and displays● Servers
● Key pads
● Industrial control
● Medical equipment
● PLC
● Cellular telephones
● Mobile devices
● Gaming machines
● Instrumentation and test measurement 4.
