PCF8574DWIn StockTexas Instruments
PCF8574DW is an 8-bit I2C I/O expander by Texas Instruments in SOIC-16 package, operating 2.5V to 6V, with interrupt output. In stock from $0.55; global shipping, 1-piece minimum order.
- Manufacturer
- Texas Instruments
- Package
- SOIC-16
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- PCF8574DW Datasheet PDF
- Category
- interface-io-expanders
- Price
- From $0.5507(MOQ 320)
- Temp Range
- 0.0°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Applications
Commonly used in industrial controllers, home automation, and embedded systems to expand microcontroller GPIO over I2C. Also found in display drivers, keyboard matrices, and sensor hubs where additional I/O lines are needed without extra MCU pins.
Specifications
| supply_voltage | 2.5V to 6V |
| interface | I2C / SMBus (400kHz Fast-mode) |
| io_count | 8 |
| operating_temperature | 0C to 70C |
| package | SOIC-16 Wide |
| interrupt | Active-low interrupt output |
| Package | SOIC-16 |
Compliance & Regulatory
| RoHS Status | Compliant |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the PCF8574DW used for?
The PCF8574DW is an 8-bit I2C I/O expander from Texas Instruments. It is used to add 8 additional GPIO lines to a microcontroller over a 2-wire I2C bus, commonly in industrial panels, home automation, keyboard matrices, and display controllers where MCU pin count is limited.
What package and pin count does the PCF8574DW have?
The PCF8574DW comes in a 16-pin SOIC wide-body (DW) package. It has 8 I/O pins, 3 address select pins (A0-A2), SDA/SCL for I2C, an interrupt output pin, VCC, and GND, totaling 16 pins.
What is the supply voltage and operating temperature for PCF8574DW?
The PCF8574DW operates from 2.5V to 6V supply voltage, making it compatible with both 3.3V and 5V systems. The commercial grade device supports 0C to 70C operating temperature range.
What are the alternatives to PCF8574DW?
Common alternatives to the PCF8574DW include the PCF8574ATW (same function, alternate I2C address range, also TI), MCP23008 (Microchip, 8-bit I2C I/O expander, SOIC-18), and PCA9534 (NXP, 8-bit I2C I/O expander, lower power). All provide 8 quasi-bidirectional I/O ports over I2C.
Is the PCF8574DW RoHS compliant?
Yes, the PCF8574DW is RoHS compliant and manufactured as a lead-free component by Texas Instruments. It meets EU RoHS Directive requirements restricting hazardous substances in electronic equipment.
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Why Buy from FindMyChip
About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 320+ | $1.3907 | $445.04 |
| 340+ | $0.5955 | $202.47 |
| 440+ | $0.5731 | $252.16 |
| 545+ | $0.5507 | $300.13 |
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