I/O Expanders
Browse available I/O Expanders part numbers with manufacturer references, stock information, pricing, datasheets and key specifications. Use the table below to compare options for your project.
For BOM, shortage or hard-to-find requirements, send your part number and quantity to Winsun (HK) Electronics for availability, lead-time and quotation support.
| Photo | Mfr. Part # | Availability | Price | Quantity | Datasheet | Series | Package/Case | Packaging | Product Status | Programmable | Number of I/O | Interface | Interrupt Output | Features | Output Type | Current - Output Source/Sink | Clock Frequency | Voltage - Supply | Operating Temperature | Grade | Qualification | Mounting Type | Supplier Device Package |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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CAT9554AYI-GIC XPND 400KHZ I2C SMBUS 16TSSOP |
475 | - |
|
Datasheet | CAT9554A | 16-TSSOP (0.173", 4.40mm Width) | Bulk | Active | Not Verified | 8 | I2C, SMBus | Yes | POR | Push-Pull | 10mA, 24mA | 400 kHz | 2.3V ~ 5.5V | -40°C ~ 85°C | - | - | Surface Mount | 16-TSSOP |
|
PCA9674APW,112IC XPNDR 1MHZ I2C 16TSSOP |
3,722 | - |
|
Datasheet | - | 16-TSSOP (0.173", 4.40mm Width) | Tube | Obsolete | Not Verified | 8 | I2C | Yes | POR | Push-Pull | 100µA, 25mA | 1 MHz | 2.3V ~ 5.5V | -40°C ~ 85°C | - | - | Surface Mount | 16-TSSOP |
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PCA9554BBSHPIC XPND 400KHZ I2C SMBUS 16HVQFN |
1,751 | - |
|
Datasheet | - | 16-VFQFN Exposed Pad | Tape & Reel (TR) | Active | Not Verified | 8 | I2C, SMBus | Yes | POR | Push-Pull | 10mA, 25mA | 400 kHz | 1.65V ~ 5.5V | -40°C ~ 85°C | - | - | Surface Mount | 16-HVQFN (3x3) |
|
|
PCA9554PW/DG,118IC XPND 400KHZ I2C SMBUS 16TSSOP |
4,588 | - |
|
Datasheet | - | 16-TSSOP (0.173", 4.40mm Width) | Tape & Reel (TR) | Obsolete | Not Verified | 8 | I2C, SMBus | Yes | POR | Push-Pull | 10mA, 25mA | 400 kHz | 2.3V ~ 5.5V | -40°C ~ 85°C | - | - | Surface Mount | 16-TSSOP |
|
TCA9554ADWTIC XPNDR 400KHZ I2C SMBUS 16SOIC |
500 | - |
|
Datasheet | - | 16-SOIC (0.295", 7.50mm Width) | Tape & Reel (TR) | Active | Not Verified | 8 | I2C, SMBus | Yes | POR | Push-Pull | - | 400 kHz | 1.65V ~ 5.5V | -40°C ~ 85°C | - | - | Surface Mount | 16-SOIC |
|
PCA9557DIC XPNDR 400KHZ I2C SMBUS 16SOIC |
3,550 | - |
|
Datasheet | - | 16-SOIC (0.154", 3.90mm Width) | Bulk | Obsolete | Not Verified | 8 | I2C, SMBus | No | POR | Open Drain, Push-Pull | 10mA, 25mA | 400 kHz | 2.3V ~ 5.5V | -40°C ~ 85°C | - | - | Surface Mount | 16-SOIC |
|
MC1225FIC XPNDR 14CFLATPK |
3,407 | - |
|
Datasheet | MC1200 | 14-CFlatPack | Bulk | Active | Not Verified | 4 | - | No | - | - | - | - | 5.2V | -55°C ~ 125°C | - | - | Surface Mount | 14-CFlatPack |
|
VSC7157XYS-03IC INTERFACE CONTROLLER |
4,687 | - |
|
Datasheet | * | - | Bulk | Obsolete | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
|
CY8C9560A-24AXICY8C9560A-24AXI - 20-, 40-, AND |
2,019 | - |
|
Datasheet | - | 100-LQFP | Bulk | Active | Not Verified | 60 | I2C | Yes | EEPROM, POR, PWM, WDT | Open Drain | 10mA, 25mA | 100 kHz | 3V ~ 5.25V | -40°C ~ 85°C | - | - | Surface Mount | 100-TQFP (14x14) |
|
CQ82C55AZIC XPNDR PARALLEL 44MQFP |
4,674 | - |
|
Datasheet | - | 44-QFP | Tray | Active | Not Verified | 24 | Parallel | No | - | Open Drain | 2.5mA | - | 4.5V ~ 5.5V | 0°C ~ 70°C | - | - | Surface Mount | 44-MQFP (10x10) |
|
MCP23009-E/SSIC XPNDR 3.4MHZ I2C 20SSOP |
4,308 | - |
|
Datasheet | - | 20-SSOP (0.209", 5.30mm Width) | Tube | Active | Not Verified | 8 | I2C | Yes | POR | Open Drain | 25mA | 3.4 MHz | 1.8V ~ 5.5V | -40°C ~ 125°C | - | - | Surface Mount | 20-SSOP |
|
MCP23S09-E/PIC XPNDR 10MHZ SPI 18DIP |
3,604 | - |
|
Datasheet | - | 18-DIP (0.300", 7.62mm) | Tube | Active | Not Verified | 8 | SPI | Yes | - | Open Drain | 25mA | 10 MHz | 1.8V ~ 5.5V | -40°C ~ 125°C | - | - | Through Hole | 18-PDIP |
|
MAX7312AUG+IC XPND 400KHZ I2C SMBUS 24TSSOP |
2,521 | - |
|
Datasheet | - | 24-TSSOP (0.173", 4.40mm Width) | Tube | Active | Not Verified | 16 | I2C, SMBus | Yes | POR | Push-Pull | 31mA, 43mA | 400 kHz | 2V ~ 5.5V | -40°C ~ 125°C | - | - | Surface Mount | 24-TSSOP |
|
|
MAX7312AUG+TIC XPND 400KHZ I2C SMBUS 24TSSOP |
2,679 | - |
|
Datasheet | - | 24-TSSOP (0.173", 4.40mm Width) | Tape & Reel (TR) | Active | Not Verified | 16 | I2C, SMBus | Yes | POR | Push-Pull | 31mA, 43mA | 400 kHz | 2V ~ 5.5V | -40°C ~ 125°C | - | - | Surface Mount | 24-TSSOP |
|
|
PCA9538PW/Q900,118IC XPND 400KHZ I2C SMBUS 16TSSOP |
4,831 | - |
|
Datasheet | - | 16-TSSOP (0.173", 4.40mm Width) | Tape & Reel (TR) | Active | Not Verified | 8 | I2C, SMBus | Yes | POR | Push-Pull | 10mA, 25mA | 400 kHz | 2.3V ~ 5.5V | -40°C ~ 85°C | - | - | Surface Mount | 16-TSSOP |
|
|
PI4IOE5V6416AZDEXINTERFACE IO EXPANDER V-QFN4040- |
3,120 | - |
|
Datasheet | - | 24-VFQFN Exposed Pad | Tape & Reel (TR) | Active | - | 16 | I2C | Yes | POR | Open Drain, Push-Pull | 10mA, 25mA | 400 kHz | 1.65V ~ 5.5V | -40°C ~ 85°C | - | - | Surface Mount | 24-TQFN (4x4) |
|
|
PI4IOE5V6416ALEXINTERFACE IO EXPANDER TSSOP-24 T |
4,109 | - |
|
Datasheet | - | 24-TSSOP (0.173", 4.40mm Width) | Tape & Reel (TR) | Active | - | 16 | I2C | Yes | POR | Open Drain, Push-Pull | 10mA, 25mA | 400 kHz | 1.65V ~ 5.5V | -40°C ~ 85°C | - | - | Surface Mount | 24-TSSOP |
|
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TPT29555A-TS5RIC BUS EXPANDER I2C 16BIT 24-TSS |
2,185 | - |
|
Datasheet | - | 24-TSSOP (0.173", 4.40mm Width) | Tape & Reel (TR) | Active | - | 16 | I2C | Yes | POR | Push-Pull | 10mA, 25mA | 400 kHz | 1.65V ~ 5.5V | -40°C ~ 85°C | - | - | Surface Mount | 24-TSSOP |
|
AAT4296IJS-T1IC XPNDR SERIAL SC70 |
1,600 | - |
|
Datasheet | - | 8-TFSOJ (0.069", 1.75mm Width) | Tape & Reel (TR) | Obsolete | Not Verified | 5 | Serial | No | - | Push-Pull | - | - | 1.8V ~ 5.5V | -40°C ~ 85°C | - | - | Surface Mount | 8-SC70JW |
|
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PI4IOE5V9521XTEXIC XPNDR 1MHZ I2C 8UQFN |
4,444 | - |
|
Datasheet | - | 8-UFQFN Exposed Pad | Tape & Reel (TR) | Obsolete | Not Verified | 1 | I2C | Yes | - | - | 20mA | 1 MHz | 2.3V ~ 5.5V | - | - | - | Surface Mount | 8-UQFN (1.6x1.6) |
I/O Expanders FAQ
Common questions about selecting, comparing and sourcing I/O Expanders components through Winsun (HK) Electronics.
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Compare the manufacturer part number, electrical specifications, package, operating conditions and application requirements. The product datasheet should be used to confirm technical suitability.
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Yes. Our sourcing team can review shortage and obsolete-part requirements and help check available supply channels or possible alternatives when appropriate.
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Submit an RFQ with the part number, manufacturer, quantity and target delivery requirement. Our sales team will review your request and follow up with current sourcing information.
