Texas Instruments PCF8575C
The PCF8575C provides general-purpose remote I/O expansion for most microcontroller families via the I2C interface serial clock (SCL) and serial data (SDA). The device features a 16-bit quasi-bidirectional input/output (I/O) port (P07–P00, P17–P10), including latched outputs with high-current drive capability for directly driving LEDs. Each quasi-bidirectional I/O can be used as an input or output without the use of a data-direction control signal.| Part No. | PCF8575C |
|---|---|
| Datasheet | PCF8575C Download |
| Manufacturer |  Texas Instruments |
| Description | Remote 16-Bit I2C AND SMBus Low-Power I/O Expander |
| Buy | Stock & Price |
FEATURES
●1 I2C to Parallel-Port Expander● Open-Drain Interrupt Output
● Low Standby-Current Consumption of 10 μA Maximum
● Compatible With Most Microcontrollers
● 400-kHz Fast I2C Bus
● Address by Three Hardware Address Pins for Use of up to Eight Devices
● Latched Outputs With High-Current Drive Capability for Directly Driving LEDs
● Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
● ESD Protection Exceeds JESD 22 – 2000-V Human-Body Model – 200-V Machine Model – 1000-V Charged-Device Model 2
APPLICATIONS
● Telecom Shelters: Filter Units● Servers
● Routers (Telecom Switching Equipment)
● Personal Computers
● Personal Electronics
● Industrial Automation
● Products with GPIO-Limited Processors 3
DESCRIPTION
This 16-bit I/O expander for the two-line bidirectional bus (I2C) is designed for 4.5-V to 5.5-V VCC operation. At power on, the I/Os are in 3-state mode. The strong pullup to VCC allows fast-rising edges into heavily loaded outputs. This device turns on when an output is written high and is switched off by the negative edge of SCL.
