| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
|---|---|---|---|---|---|---|---|---|---|
|
9,705 pcs
|
9705 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request |
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The PCF8574AT/3 from NXP Semiconductors is a general-purpose remote I/O expander designed for the two-wire I2C-bus. It provides eight quasi-bidirectional ports that can function as either inputs or outputs, controlled through a single register. This device operates with a supply voltage ranging from 2.5 V to 6 V and features a 100 kHz I2C-bus interface.
Key features include latched output ports capable of directly driving LEDs, a total package sink capability of 80 mA, and an active LOW open-drain interrupt output. The interrupt output is activated when any input state changes, signaling the microcontroller without continuous polling. The device defaults to inputs with a weak internal pull-up at power-up.
This I/O expander is suitable for applications such as LED signs and displays, keypads, industrial control, and mobile devices. It is available in a 16-SOIC surface mount package.
| Qty | Low | High |
|---|---|---|
| 1+ | $1.15 | $1.15 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The PCF8574AT/3 operates between 2.5 V and 6 V.
The PCF8574AT/3 uses an I2C interface.
The PCF8574AT/3 provides 8 I/O pins.
The PCF8574AT/3 operates from -40 °C to 85 °C.
Yes, the PCF8574AT/3 has an active LOW open-drain interrupt output.
The PCF8574AT/3 is supplied in a 16-SOIC package.