PCF8574N Datasheet | Texas Instruments

Features - 1 Low Standby-Current Consumption of 10 μA Max - I2C to Parallel-Port Expander - Open-Drain Interrupt Output - patible With Most Microcontrollers - Latched Outputs With High-Current Drive Capability for Directly Driving LEDs - Latch-Up Performance Exceeds 100 m A Per JESD 78, Class II 2 Applications - Tele Shelters: Filter Units - Servers - Routers (Tele Switching Equipment) - Personal puters - Personal Electronics - Industrial Automation - Products with GPIO-Limited Processors 3 Description This 8-bit input/output (I/O) expander for the two-line bidirectional bus (I2C) is designed for 2.5-V to 6-V VCC operation. The PCF8574 device provides general-purpose remote I/O expansion for most microcontroller families by way of the I2C interface [serial clock (SCL), serial data (SDA)]. The device features an 8-bit quasi-bidirectional I/O port (P0- P7), including latched outputs with highcurrent 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. At power on, the I/Os are high. In this mode, only a current source to VCC is active. PART NUMBER PCF8574 Device Information(1) PACKAGE (PIN) BODY SIZE (NOM) TVSOP (20) 5.00 mm × 4.40 mm SOIC (16) 10.30 mm × 7.50 mm PDIP (16) 19.30 mm × 6.35 mm TSSOP (20) 6.50 mm × 4.40 mm QFN (16) 3.00 mm × 3.00 mm VQFN (20) 4.50 mm × 3.50 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. I2C or SMBus Master (e.g....