I/O Expanders
Devices in this family are used in conjunction with microcontrollers, microprocessors, or similar devices for the purpose of increasing the number of signal connections available for connecting peripheral devices. The typical concept of operation involves the use of serial communications requiring only a few I/O lines on the host device to read/write the status of many input/output pins on the expander device. The technique exchanges speed of communication for increased connectivity, and is best suited for applications where fast response is not critical, such as in many human interface applications.
| Part Number | Manufacturer | Description | Quantity | Price | Option |
|---|---|---|---|---|---|
PCA9538PW
|
Texas Instruments | IC I/O EXPANDER I2C 8B 16TSSOP | 247 | $1.84 | |
PCA9557D
|
Texas Instruments | IC I/O EXPANDER I2C 8B 16SOIC | 347 | $1.75 | |
PCF8574PW
|
Texas Instruments | IC I/O EXPANDER I2C 8B 20TSSOP | 160 | $1.74 | |
MCP23018-E/SO
|
Microchip Technology | IC I/O EXPANDER I2C 16B 28SOIC | 309 | $1.56 | |
PCA9536D
|
Texas Instruments | IC I/O EXPANDER I2C 4B 8SOIC | 140 | $1.55 | |
|
PCF8574APW
|
Texas Instruments | IC I/O EXPANDER I2C 8B 20TSSOP | 668 | $1.53 | |
PCF8574ADW
|
Texas Instruments | IC I/O EXPANDER I2C 8B 16SOIC | 886 | $1.53 | |
MCP23S09-E/SO
|
Microchip Technology | IC I/O EXPANDER SPI 8B 18SOIC | 387 | $1.24 | |
MCP23009-E/SS
|
Microchip Technology | IC I/O EXPANDER I2C 8B 20SSOP | 88 | $1.16 | |
|
MCP23009-E/SO
|
Microchip Technology | IC I/O EXPANDER I2C 8B 18SOIC | 475 | $1.16 |