| Distributor | SKU | Stock | Cost | |
|---|---|---|---|---|
| DigiKey | 296-21779-1-ND | 77 | $1.63 | Buy |
| Mouser Electronics | 595-PCA9554ADW | 504 | $1.93 | Buy |
| Win Source | PCA9554ADW | 3000 | Buy | |
| Quarktwin Electronic Components | PCA9554ADW | 13004 | $1.71 | Buy |
| Verical Marketplace | PCA9554ADW | 720 | $0.77 | Buy |
| Texas Instruments | PCA9554ADW | 4571 | $1.36 | Buy |
| AVNET Europe | PCA9554ADW | * $0.98 | Buy | |
| Newark | PCA9554ADW | $1.41 | Buy | |
| AVNET Express | PCA9554ADW | 25945 | $0.75 | Buy |
| Arrow North American Components | PCA9554ADW | 4 | $0.07 | Buy |
PCA9554A Remote 8-Bit I2C and SMBus I/O Expander with Interrupt Output and Configuration Registers
| Title | Manufacturer | Published |
|---|---|---|
| Programming Fun Lights With TI's TCA6507 | Texas Instruments | 11/30/2007 |
| Maximum Clock Frequency of I2C Bus Using Repeaters | Texas Instruments | 05/15/2015 |
| I2C Bus Pull-Up Resistor Calculation | Texas Instruments | 02/13/2015 |
| Understanding the I2C Bus | Texas Instruments | 06/30/2015 |