This 16-bit I/O expander for the two-line bidirectional bus (I2C) is designed for 2.5V to 5.5V VCC operation.
The PCF8575 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 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. At power on, the I/Os are high. In this mode, only a current source to VCC is active.
PART NUMBER | PACKAGE(1) | PACKAGE SIZE(2) |
---|---|---|
PCF8575 | SSOP (DB, 24) | 8.2mm × 7.8mm |
SSOP (DBQ, 24) | 8.65mm × 6mm | |
TVSOP (DGV, 24) | 5mm × 6.4mm | |
SOIC (DW, 24) | 15.5mm × 10.3mm | |
TSSOP (PW, 24) | 7.8mm × 6.4mm | |
VQFN (RGV, 24) | 4mm × 4mm |