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.
Browse I/O Expanders by MPN. We highlight stock availability, support BOM matching, and source through original / verified channels.
Product List
Total Components: 1,093
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 PCA9500D,118 Freescale / NXP Semiconductors | 1 $0.8700 | 8 | No | 100µA, 25mA | 400 kHz | EEPROM, POR | I²C, SMBus | Surface Mount | -40°C ~ 85°C | Push-Pull | 2.5V ~ 3.6V | 16-SOIC (0.295", 7.50mm Width) | 16-SO | 8,988 | |
 PCA9534PW,112 Freescale / NXP Semiconductors | 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 | 8,107 | ||
 PCA9536D,112 Freescale / NXP Semiconductors | 1 $1.0000 | 4 | No | 10mA, 25mA | 400 kHz | POR | I²C, SMBus | Surface Mount | -40°C ~ 85°C | Push-Pull | 2.3V ~ 5.5V | 8-SOIC (0.154", 3.90mm Width) | 8-SO | 3,571 | |
PCA9538D,112 Freescale / NXP Semiconductors | 8 | Yes | 10mA, 25mA | 400 kHz | POR | I²C, SMBus | Surface Mount | -40°C ~ 85°C | Push-Pull | 2.3V ~ 5.5V | 16-SOIC (0.295", 7.50mm Width) | 16-SO | 1,535 | ||
PCA9538PW,112 Freescale / NXP Semiconductors | 1 $0.6900 | 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 | 4,964 | |
 MCP23017-E/ML Microchip Technology | 1 $7.7142 100 $6.1714 500 $5.1428 | 16 | Yes | 25mA | 1.7 MHz | POR | I²C | Surface Mount | -40°C ~ 125°C | Push-Pull | 1.8V ~ 5.5V | 28-VQFN Exposed Pad | 28-QFN (6x6) | 25 | |
 MCP23016T-I/SO Microchip Technology | 1 $2.1400 | 16 | Yes | 25mA | 400 kHz | POR | I²C | Surface Mount | -40°C ~ 85°C | Push-Pull | 2V ~ 5.5V | 28-SOIC (0.295", 7.50mm Width) | 28-SOIC | 3,023 | |
MCP23S17-E/ML Microchip Technology | 1 $15.4286 100 $12.3428 500 $10.2857 | 16 | Yes | 25mA | 10 MHz | POR | SPI | Surface Mount | -40°C ~ 125°C | Push-Pull | 1.8V ~ 5.5V | 28-VQFN Exposed Pad | 28-QFN (6x6) | 35 | |
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 | |
 MCP23S18-E/MJ Microchip Technology | 1 $9.4500 100 $7.5600 500 $6.3000 | 16 | Yes | 25mA | 10 MHz | - | SPI | Surface Mount | -40°C ~ 125°C | Open Drain | 1.8V ~ 5.5V | 24-VFQFN Exposed Pad | 24-QFN (4x4) | 50 | |
 PCA9575HF,118 Freescale / NXP Semiconductors | 1 $2.5900 | 16 | Yes | 1mA, 3mA | 400 kHz | POR | I²C, SMBus | Surface Mount | -40°C ~ 85°C | Push-Pull | 1.1V ~ 3.6V | 24-WFQFN Exposed Pad | 24-HWQFN (4x4) | 4,224 | |
 LPC47U332QFP None | 1 $1.0000 | - | - | - | - | - | - | - | - | - | - | - | - | 8,832 | |
 IS82C55A96 None | 1 $1.0000 | 24 | No | 2.5mA | - | - | Parallel | Surface Mount | -40°C ~ 85°C | Open Drain | 4.5V ~ 5.5V | 44-LCC (J-Lead) | 44-PLCC (16.58x16.58) | 3,491 | |
 MCP23018T-E/SS Microchip Technology | 1 $2.2500 | 16 | Yes | 25mA | 3.4 MHz | POR | I²C | Surface Mount | -40°C ~ 125°C | Open Drain | 1.8V ~ 5.5V | 24-SSOP (0.209", 5.30mm Width) | 24-SSOP | 7,961 | |
MAX7317ATE ADI (Analog Devices, Inc.) | - | - | - | - | - | - | - | - | - | - | - | - | 1,331 | ||
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 |