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I2C & SPI general-purpose I/Os (GPIOs) — in-stock parts

As of September 18, 2026, TI-ADI (ONE BOM LIMITED) lists 286 I2C & SPI general-purpose I/Os (GPIOs) parts. Stock and lead time are confirmed with every quote.

Part numberPackageStockManufacturer
TCA9536CDTMR
Remote 4-Bit I²C and SMBus I/O expander with configuration register and interrupt
8-X2SON (DTM)653,909Texas InstrumentsQuote
TCA6418EYFPR
18-bit 1.65- to 3.6-V I2C/SMBus I/O expander with interrupt, reset & config registers
25-DSBGA (YFP)263,713Texas InstrumentsQuote
TCAL9539RPWR
16-bit I2C/SMBus I/O expander with interrupt, reset and advanced sticky registers
24-TSSOP (PW)179,704Texas InstrumentsQuote
TCA8418RTWR
18-bit 1.65- to 3.6-V 1MHz I2C/SMBus keypad scanner with interrupt, reset & 80 key support
24-WQFN (RTW)143,878Texas InstrumentsQuote
PCF8574ARGYR
8-bit 2.5- to 5.5-V I2C/SMBus I/O expander with interrupt
20-VQFN (RGY)138,230Texas InstrumentsQuote
TCA9535MRGER
16-bit 1.65- to 5.5-V I2C/SMBus I/O expander with interrupt & config registers
24-VQFN (RGE)114,622Texas InstrumentsQuote
TCA9539BQPWRQ1
Automotive 16-bit 1.65 to 5.5V I²C/SMBus I/O expander with interrupt, reset and config registers
24-TSSOP (PW)114,535Texas InstrumentsQuote
TCA9554ADWR
8-bit 1.65- to 5.5-V I2C/SMBus I/O expander with interrupt, weak pull-up & config registers
16-SOIC (DW)104,138Texas InstrumentsQuote
TCA9554DBR
8-bit 1.65- to 5.5-V I2C/SMBus I/O expander with interrupt, weak pull-up & config registers
16-SSOP (DB)98,924Texas InstrumentsQuote
TCAL6416PWR
16-bit translating I²C-bus/SMBus I/O expander with interrupt, reset and agile I/O configuration</
24-TSSOP (PW)93,983Texas InstrumentsQuote
TCA6507PWR
7-bit 1.65- to 5.5-V I2C/SMBus LED driver with intensity control, shutdown & config registers
14-TSSOP (PW)92,009Texas InstrumentsQuote
TCA6507PWRG4
7-bit 1.65- to 5.5-V I2C/SMBus LED driver with intensity control, shutdown & config registers
14-TSSOP (PW)92,009Texas InstrumentsQuote
PCF8574APWR
8-bit 2.5- to 5.5-V I2C/SMBus I/O expander with interrupt
20-TSSOP (PW)90,728Texas InstrumentsQuote
PCF8574APWRE4
8-bit 2.5- to 5.5-V I2C/SMBus I/O expander with interrupt
20-TSSOP (PW)90,728Texas InstrumentsQuote
PCF8574APWRG4
8-bit 2.5- to 5.5-V I2C/SMBus I/O expander with interrupt
20-TSSOP (PW)90,728Texas InstrumentsQuote
TCA9539RGER
16-bit 1.65- to 5.5-V I2C/SMBus I/O expander with interrupt, reset & config registers
24-VQFN (RGE)86,425Texas InstrumentsQuote
TCA9554ADBQR
8-bit 1.65- to 5.5-V I2C/SMBus I/O expander with interrupt, weak pull-up & config registers
16-SSOP (DBQ)79,865Texas InstrumentsQuote
PCF8574PWRE4
8-bit 2.5- to 5.5-V I2C/SMBus I/O expander with interrupt
20-TSSOP (PW)75,665Texas InstrumentsQuote
PCF8574RGTR
8-bit 2.5- to 5.5-V I2C/SMBus I/O expander with interrupt
16-VQFN (RGT)74,815Texas InstrumentsQuote
PCF8574PWR
8-bit 2.5- to 5.5-V I2C/SMBus I/O expander with interrupt
20-TSSOP (PW)70,666Texas InstrumentsQuote
PCA9557D
8-bit 2.3- to 5.5-V I2C/SMBus I/O expander with reset & config registers
16-SOIC (D)70,250Texas InstrumentsQuote
PCA9554ARGTR
8-bit 2.3- to 5.5-V I2C/SMBus I/O expander with interrupt, weak pull-up & config registers
16-VQFN (RGT)62,848Texas InstrumentsQuote
TCA6507PW
7-bit 1.65- to 5.5-V I2C/SMBus LED driver with intensity control, shutdown & config registers
14-TSSOP (PW)61,650Texas InstrumentsQuote
PCA9557RGYR
8-bit 2.3- to 5.5-V I2C/SMBus I/O expander with reset & config registers
16-VQFN (RGY)56,780Texas InstrumentsQuote
TCA9554APWR
8-bit 1.65- to 5.5-V I2C/SMBus I/O expander with interrupt, weak pull-up & config registers
16-TSSOP (PW)55,880Texas InstrumentsQuote
PCF8574N
8-bit 2.5- to 5.5-V I2C/SMBus I/O expander with interrupt
16-PDIP (N)55,411Texas InstrumentsQuote
PCF8574NE4
8-bit 2.5- to 5.5-V I2C/SMBus I/O expander with interrupt
16-PDIP (N)55,411Texas InstrumentsQuote
TCA9554DWR
8-bit 1.65- to 5.5-V I2C/SMBus I/O expander with interrupt, weak pull-up & config registers
16-SOIC (DW)51,905Texas InstrumentsQuote
TCA9536DTMR
Remote 4-Bit I²C and SMBus I/O expander with configuration register and interrupt
8-X2SON (DTM)51,038Texas InstrumentsQuote
PCA9539DBQR
16-bit 2.3- to 5.5-V I2C/SMBus I/O expander with interrupt, reset & config registers
24-SSOP (DBQ)48,840Texas InstrumentsQuote
TCAL9538RSVR
Low-voltage 8-bit I²C-bus/SMBus I/O expander with interrupt, reset and agile I/O configuration
16-UQFN (RSV)48,831Texas InstrumentsQuote
PCA9554PWRG4
8-bit 2.3- to 5.5-V I2C/SMBus I/O expander with interrupt, weak pull-up & config registers
16-TSSOP (PW)47,675Texas InstrumentsQuote
TCAL9538DTUR
Low-voltage 8-bit I²C-bus/SMBus I/O expander with interrupt, reset and agile I/O configuration
16-X2QFN (DTU)45,928Texas InstrumentsQuote
TCA9534ADWR
8-bit 1.65- to 5.5-V I2C/SMBus I/O expander with interrupt, & config registers
16-SOIC (DW)45,922Texas InstrumentsQuote
PCF8575PW
16-bit 2.5- to 5.5-V I2C/SMBus I/O expander with interrupt
24-TSSOP (PW)45,020Texas InstrumentsQuote
PCF8574ADWR
8-bit 2.5- to 5.5-V I2C/SMBus I/O expander with interrupt
16-SOIC (DW)44,903Texas InstrumentsQuote
PCF8575RGER
16-bit 2.5- to 5.5-V I2C/SMBus I/O expander with interrupt
24-VQFN (RGE)43,821Texas InstrumentsQuote
TCAL6408PWR
8-bit translating I²C-bus/SMBus I/O expander with interrupt, reset, and agile I/O
16-TSSOP (PW)43,804Texas InstrumentsQuote
PCA9539DWR
16-bit 2.3- to 5.5-V I2C/SMBus I/O expander with interrupt, reset & config registers
24-SOIC (DW)40,446Texas InstrumentsQuote
PCF8574DWRG4
8-bit 2.5- to 5.5-V I2C/SMBus I/O expander with interrupt
16-SOIC (DW)40,000Texas InstrumentsQuote
PCF8574DW
8-bit 2.5- to 5.5-V I2C/SMBus I/O expander with interrupt
16-SOIC (DW)39,920Texas InstrumentsQuote
PCA9557DR
8-bit 2.3- to 5.5-V I2C/SMBus I/O expander with reset & config registers
16-SOIC (D)38,678Texas InstrumentsQuote
PCA9534DBR
8-bit 2.3- to 5.5-V I2C/SMBus I/O expander with interrupt & config registers
16-SSOP (DB)38,230Texas InstrumentsQuote
LM8323JGR8AXMX/NOPB
Mobile I/O Companion Supporting Keyscan, I/O Expansion, PWM, and ACCESS.bus Host Interface
36-CS-BGA (NYB)37,898Texas InstrumentsQuote
TCA9538DBR
8-bit 1.65- to 5.5-V I2C/SMBus I/O expander with interrupt, reset & config registers
16-SSOP (DB)37,856Texas InstrumentsQuote
TCA9534DWT
8-bit 1.65- to 5.5-V I2C/SMBus I/O expander with interrupt & config registers
16-SOIC (DW)36,725Texas InstrumentsQuote
PCA9554ADGVR
8-bit 2.3- to 5.5-V I2C/SMBus I/O expander with interrupt, weak pull-up & config registers
16-TVSOP (DGV)34,492Texas InstrumentsQuote
TCA9534ADWT
8-bit 1.65- to 5.5-V I2C/SMBus I/O expander with interrupt, & config registers
16-SOIC (DW)33,073Texas InstrumentsQuote
PCF8575DB
16-bit 2.5- to 5.5-V I2C/SMBus I/O expander with interrupt
24-SSOP (DB)32,700Texas InstrumentsQuote
PCF8574ADW
8-bit 2.5- to 5.5-V I2C/SMBus I/O expander with interrupt
16-SOIC (DW)31,760Texas InstrumentsQuote

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