This 16-bit I/O expander for the two-line bidirectional bus (I2C) is designed for 2.5-V to 5.5-V 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.
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|Part number||Order||Number of I/Os||VCC (Min) (V)||VCC (Max) (V)||Frequency (Max) (kHz)||Features||Addresses||Rating||Operating temperature range (C)||Package Group|
||16||2.5||5.5||400||Interrupt pin||8||Catalog||-40 to 85||
SOIC | 24
SSOP | 24
SSOP | 24
TSSOP | 24
TVSOP | 24
VQFN | 24
||8||2.5||6||100||Interrupt pin||8||Catalog||-40 to 85||
PDIP | 16
SOIC | 16
TSSOP | 20
TVSOP | 16
TVSOP | 20
VQFN | 16
VQFN | 20