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 # | Manufacturer | Description | Availability | Pricing | Quantity |
|---|---|---|---|---|---|
PCF8574RGYRI/O Expanders | Texas Instruments | 8-bit 2.5- to 5.5-V I2C/SMBus I/O expander with interrupt 20-VQFN -40 to 85 | 1325 | 1+: $1.54880 10+: $1.13696 25+: $1.03382
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PCF8574ARGYRI/O Expanders | Texas Instruments | 8-bit 2.5- to 5.5-V I2C/SMBus I/O expander with interrupt 20-VQFN -40 to 85 | 39 | 1+: $1.19828 10+: $1.16915 30+: $1.14857 | |
PCA9535RTWRI/O Expanders | Texas Instruments | Remote 16-Bit I2C and SMBus, Low-Power I/O Expander With Interrupt Output and Config Registers 24-WQFN -40 to 85 | In Stock | 3000+: $1.41184 6000+: $1.38539 | |
PCA9554ARGTRI/O Expanders | Texas Instruments | Remote 8-Bit I2C and SMBus I/O Expander with Interrupt Output and Configuration Registers 16-VQFN -40 to 85 | 60 | 1+: $1.88400 10+: $1.58915 30+: $1.40572 | |
TCA6408APWRI/O Expanders | Texas Instruments | 8-bit translating 1.65- to 5.5-V I2C/SMBus I/O expander with interrupt, reset & config registers 16-TSSOP -40 to 85 | 2142 | 1+: $0.66685 10+: $0.54515 30+: $0.48343
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TCA6416RTWTI/O Expanders | Texas Instruments | Low-voltage 16-bit I2C & SMBus I/O expander with interrupt output, reset & config registers 24-WQFN -40 to 85 | In Stock | 132+: $2.00640 250+: $2.26417 500+: $2.03164
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ADP5587ACPZ-R7I/O Expanders | Analog Devices Inc. | IC XPNDR 400KHZ I2C 24LFCSP | 3055 | 1+: $4.21520 10+: $2.73856 25+: $2.35382
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MAX7313DATG+I/O Expanders | Analog Devices Inc./Maxim Integrated | IC XPNDR 400KHZ I2C SMBUS 24TQFN | In Stock | 75+: $2.48171 | |
MAX7318AWG+I/O Expanders | Analog Devices Inc./Maxim Integrated | IC XPNDR 400KHZ I2C SMBUS 24SOIC | 55 | 1+: $6.28320 10+: $4.84704 30+: $4.42640
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MAX7318AWG+TI/O Expanders | Analog Devices Inc./Maxim Integrated | IC XPNDR 400KHZ I2C SMBUS 24SOIC | In Stock | 1000+: $3.69764 2000+: $3.62078 | |
PCA9535EMTTXGI/O Expanders | onsemi | 16-Bit I/O Expander, I2C, 400kHz, 5.5V, QFN | 1 | 1+: $2.84240 55+: $1.44320 3000+: $0.85030 | |
TCA1116PWRI/O Expanders | Texas Instruments | Low Voltage 16-Bit I2C and SMBus Low-Power I/O Expander 24-TSSOP -40 to 85 | In Stock | 1+: $1.80400 2000+: $1.21942 4000+: $1.19340
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NLVPCA9535EDTR2GI/O Expanders | onsemi | I/O Port Expander, I2C, 16-bit, Low-Power w/Interrupt Automotive, TSSOP24 7.8x4.4, 0.65P, 2500-REEL | 7909 | 1+: $2.03280 10+: $1.50656 25+: $1.37491
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PCA9654EDR2GI/O Expanders | onsemi | I/O Expander, I2C / SMBus, 8-bit, with Interrupt, 2500-REEL | In Stock | 1+: $4.40880 127+: $2.07680 2500+: $1.57113 | |
PCA9654EDTR2GI/O Expanders | onsemi | I/O Expander, I2C / SMBus, 8-bit, with Interrupt, 2500-REEL | 244 | 1+: $2.73943 10+: $2.60915 30+: $2.53028
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TCA9554DBQRI/O Expanders | Texas Instruments | Remote 8-Bit I2C and SMBus I/O Expander 16-SSOP -40 to 85 | 359 | 1+: $1.31120 10+: $0.95480 25+: $0.86627
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TCA9554ADBQRI/O Expanders | Texas Instruments | Remote 8-Bit I2C and SMBus I/O Expander 16-SSOP -40 to 85 | 1790 | 1+: $1.68685 10+: $1.40743 30+: $1.25485
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TCA9555RGERI/O Expanders | Texas Instruments | I2C/SMBus Interface 400kHz 5.5V 24-Pin VQFN EP T/R | 3927 | 1+: $1.37280 10+: $1.00496 25+: $0.91203
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TCA6408AQPWRQ1I/O Expanders | Texas Instruments | 8-Bit I/O Expander, 1.8V, 16-TSSOP, Automotive, AEC-Q100 | 5439 | 1+: $1.32880 10+: $0.97328 25+: $0.88317
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TCA9534ADWTI/O Expanders | Texas Instruments | I2C/SMBus Interface 5.5V 16-Pin SOIC T/R | 457 | 1+: $1.53120 10+: $1.12376 25+: $1.02150
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TCA9534DWTI/O Expanders | Texas Instruments | Remote 8-Bit I2C Low-Power I/O Expander With Interrupt Output and Configuration Registers 16-SOIC -40 to 85 | 14 | 1+: $1.41943 10+: $1.16572 30+: $1.02515 | |
TCA9554ADWTI/O Expanders | Texas Instruments | Remote 8-Bit I2C and SMBus I/O Expander 16-SOIC -40 to 85 | 275 | 1+: $1.41680 250+: $0.78954 | |
TCA9534ADWRI/O Expanders | Texas Instruments | Remote 8-Bit I2C and Low-Power I/O Expander With Interrupt Output and Configuration Registers 16-SOIC -40 to 85 | 33 | 1+: $0.88972 10+: $0.86743 30+: $0.85200 | |
TCA9535MRGERI/O Expanders | Texas Instruments | Remote 16-Bit I2C and SMBus, Low-Power I/O Expander With Interrupt Output and Config Registers 24-VQFN -40 to 85 | In Stock | 100+: $0.87497 200+: $0.85988 300+: $0.82972 | |
PM8054B-F3GII/O Expanders | Microchip Technology | PM8054: SXP 12G | In Stock | 40+: $110.00000 |