0
ACTIVE
Number of I/Os |
8 |
Features |
Interrupt pin |
Supply voltage (min) (V) |
2.5 |
Supply voltage (max) (V) |
6 |
Addresses |
8 |
Rating |
Catalog |
Frequency (max) (MHz) |
0.1 |
Operating temperature range (°C) |
-40 to 85 |
PDIP (N)-16-181.42 mm² 19.3 x 9.4
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 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 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.
WELL LINK CHIPS GROUP CO.,LIMITED FLAT/RM 1802 BEVERLY HOUSE 93-107 LOCKHART ROAD WANCHAI HK
