| Distributor | SKU | Stock | Cost | |
|---|---|---|---|---|
| DigiKey | 296-21777-2-ND | 0 | $1.73 | Buy |
| Mouser Electronics | 595-PCA9554ADBR | 0 | $1.72 | Buy |
| Arrow North American Components | PCA9554ADBR | 0 | $0.55 | Buy |
| Win Source | PCA9554ADBR | 25660 | $2.91 | Buy |
| Quarktwin Electronic Components | PCA9554ADBR | 24000 | $0.68 | Buy |
| AVNET Europe | PCA9554ADBR | * $0.82 | Buy | |
| Texas Instruments | PCA9554ADBR | 10 | $1.13 | Buy |
| AVNET Express | PCA9554ADBR | 2495 | $0.62 | 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 |