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.
Sourcing Texas Instruments I/O Expanders: in-stock lines for quick ship, BOM matching for multi-line builds, and original-channel screening — not keyword stuffing.
Product List
Total Components: 233
| Product | Pricing | Datasheet | Number of I/O | Interrupt Output | Current - Output Source/Sink | Clock Frequency | Features | Interface | Mounting Type | Operating Temperature | Output Type | Voltage - Supply | Package / Case | Supplier Device Package | Stock & Quantity |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 TCA9534PWR Texas Instruments | 1 $1.3235 100 $1.0588 500 $0.8823 | 8 | Yes | - | 400 kHz | - | I²C | Surface Mount | -40°C ~ 85°C | Push-Pull | 1.65V ~ 5.5V | 16-TSSOP (0.173", 4.40mm Width) | 16-TSSOP | 63 | |
PCA9534APWR Texas Instruments | 1 $2.0900 | 8 | Yes | 10mA, 25mA | 400 kHz | POR | I²C, SMBus | Surface Mount | -40°C ~ 85°C | Push-Pull | 2.3V ~ 5.5V | 16-TSSOP (0.173", 4.40mm Width) | 16-TSSOP | 3,254 | |
 TCA6408ARSVR Texas Instruments | 1 $10.8923 100 $8.7138 500 $7.2615 | 8 | Yes | 10mA, 25mA | 400 kHz | POR | I²C, SMBus | Surface Mount | -40°C ~ 85°C | Push-Pull | 1.65V ~ 5.5V | 16-UFQFN | 16-UQFN (2.6x1.8) | 115 | |
 TCA9534DWR Texas Instruments | 1 $1.4500 | 8 | Yes | - | 400 kHz | POR | I²C | Surface Mount | -40°C ~ 85°C | Push-Pull | 1.65V ~ 5.5V | 16-SOIC (0.295", 7.50mm Width) | 16-SOIC | 5,914 | |
 TCA9536DGKR Texas Instruments | 1 $1.5700 | 4 | Yes | 10mA, 25mA | 1 MHz | POR | I²C, SMBus | Surface Mount | -40°C ~ 125°C | Open Drain | 1.65V ~ 5.5V | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | 8-VSSOP | 8,391 | |
TCA6408APWR Texas Instruments | 1 $1.5800 | 8 | Yes | 10mA, 25mA | 400 kHz | POR | I²C, SMBus | Surface Mount | -40°C ~ 85°C | Push-Pull | 1.65V ~ 5.5V | 16-TSSOP (0.173", 4.40mm Width) | 16-TSSOP | 6,675 | |
 TCA9554DBR Texas Instruments | 1 $0.7696 | 8 | Yes | - | 400 kHz | POR | I²C | Surface Mount | -40°C ~ 85°C | Push-Pull | 1.65V ~ 5.5V | 16-SSOP (0.209", 5.30mm Width) | 16-SSOP | 9,095 | |
PCF8574DWRE4 Texas Instruments | 8 | Yes | 1mA, 25mA | 100 kHz | POR | I²C | Surface Mount | -40°C ~ 85°C | Push-Pull | 2.5V ~ 6V | 16-SOIC (0.295", 7.50mm Width) | 16-SOIC | 5,298 | ||
 PCF8574NG4 Texas Instruments | 8 | Yes | 1mA, 25mA | 100 kHz | POR | I²C | Through Hole | -40°C ~ 85°C | Push-Pull | 2.5V ~ 6V | 16-DIP (0.300", 7.62mm) | 16-PDIP | 6,304 | ||
 PCF8575CDWE4 Texas Instruments | 16 | Yes | 10mA, 25mA | 400 kHz | POR | I²C, SMBus | Surface Mount | -40°C ~ 85°C | Open Drain | 4.5V ~ 5.5V | 24-SOIC (0.295", 7.50mm Width) | 24-SOIC | 5,629 | ||
 PCF8575DBQRG4 Texas Instruments | 16 | Yes | 1mA, 25mA | 400 kHz | POR | I²C, SMBus | Surface Mount | -40°C ~ 85°C | Push-Pull | 2.5V ~ 5.5V | 24-SSOP (0.154", 3.90mm Width) | 24-SSOP | 8,231 | ||
 PCF8575PWE4 Texas Instruments | 1 $1.0000 | 16 | Yes | 1mA, 25mA | 400 kHz | POR | I²C, SMBus | Surface Mount | -40°C ~ 85°C | Push-Pull | 2.5V ~ 5.5V | 24-TSSOP (0.173", 4.40mm Width) | 24-TSSOP | 5,269 | |
PCF8575PWRE4 Texas Instruments | 1 $14.7692 | 16 | Yes | 1mA, 25mA | 400 kHz | POR | I²C, SMBus | Surface Mount | -40°C ~ 85°C | Push-Pull | 2.5V ~ 5.5V | 24-TSSOP (0.173", 4.40mm Width) | 24-TSSOP | 100,000 | |
PCA9534PW Texas Instruments | 1 $1.0000 | 8 | Yes | 10mA, 25mA | 400 kHz | POR | I²C, SMBus | Surface Mount | -40°C ~ 85°C | Push-Pull | 2.3V ~ 5.5V | 16-TSSOP (0.173", 4.40mm Width) | 16-TSSOP | 4,457 | |
PCA9539PW Texas Instruments | 1 $1.0000 | 16 | Yes | 10mA, 25mA | 400 kHz | POR | I²C, SMBus | Surface Mount | -40°C ~ 85°C | Push-Pull | 2.3V ~ 5.5V | 24-TSSOP (0.173", 4.40mm Width) | 24-TSSOP | 1,329 | |
PCA9554PW Texas Instruments | 1 $1.4900 | 8 | Yes | 10mA, 25mA | 400 kHz | POR | I²C, SMBus | Surface Mount | -40°C ~ 85°C | Push-Pull | 2.3V ~ 5.5V | 16-TSSOP (0.173", 4.40mm Width) | 16-TSSOP | 1,275 | |
PCA9555PW Texas Instruments | 1 $0.9750 100 $0.7800 500 $0.6500 | 16 | Yes | 10mA, 25mA | 400 kHz | POR | I²C, SMBus | Surface Mount | -40°C ~ 85°C | Push-Pull | 2.3V ~ 5.5V | 24-TSSOP (0.173", 4.40mm Width) | 24-TSSOP | 50 | |
 PCA6107DWR Texas Instruments | 1 $1.1000 | 8 | Yes | 10mA, 25mA | 400 kHz | POR | I²C, SMBus | Surface Mount | -40°C ~ 85°C | Open Drain, Push-Pull | 2.3V ~ 5.5V | 18-SOIC (0.295", 7.50mm Width) | 18-SOIC | 2,112 | |
TCA6408PWR Texas Instruments | 1 $1.0000 | 8 | Yes | 10mA, 25mA | 400 kHz | POR | I²C, SMBus | Surface Mount | -40°C ~ 85°C | Push-Pull | 1.65V ~ 5.5V | 16-TSSOP (0.173", 4.40mm Width) | 16-TSSOP | 5,399 | |
 TCA6408RGTR Texas Instruments | 1 $1.0000 | 8 | Yes | 10mA, 25mA | 400 kHz | POR | I²C, SMBus | Surface Mount | -40°C ~ 85°C | Push-Pull | 1.65V ~ 5.5V | 16-VFQFN Exposed Pad | 16-VQFN (3x3) | 1,658 |