PCF8574 Datasheet
PCF8574 Datasheet (NXP Semiconductors)
NXP Semiconductors
The PCF8574/74A 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, 10.
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 .
PCF8574 Datasheet (Texas Instruments)
Texas Instruments
This 8-bit input/output (I/O) expander for the two-line bidirectional bus (I2C) is designed for 2.5V to 6V VCC operation. The PCF8574 device provides general-purpose remote I/O expansion for most mi.
* Low standby-current consumption of 10μA max
* I2C to parallel-port expander
* Open-drain interrupt output
* Compatible with most microcontrollers
* Latched outputs with high-current drive capability
for directly driving LEDs
* Latch-up performance exceeds 100mA per JESD
78, Class II
2 Applications.