| Distributor | SKU | Stock | Cost | |
|---|---|---|---|---|
| Mouser Electronics | 595-PCA9557DBR | 1363 | $1.43 | Buy |
| Win Source | PCA9557DBR | 7000 | $1.82 | Buy |
| Quarktwin Electronic Components | PCA9557DBR | 25215 | $1.42 | Buy |
| Arrow North American Components | PCA9557DBR | 0 | $1.24 | Buy |
| AVNET Express | PCA9557DBR | 59544 | $0.62 | Buy |
| AVNET Europe | PCA9557DBR | * $0.82 | Buy | |
| Texas Instruments | PCA9557DBR | 13789 | $1.13 | Buy |
| Newark | PCA9557DBR | $0.66 | Buy |
PCA9557 Remote 8-Bit I2C and SMBus Low-Power I/O Expander with Reset 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 |