40-bit I2C-bus I/O port with RESET, OE and INT - # of Addresses: 8 ; I2C-bus: 400 kHz; Interrupt: 0-1 ; Max Sink Current per bit: 25 mA; Max Sink Current, per package: 500 mA; Number of bits: 40 ; Operating temperature: -40~85 Cel; Operating voltage: 2.3~5.5 VDC; Source Current per bit: 10 mA; Weak Pull-Up Current Source: no internal pull up resistor; Package: SOT684-1 (HVQFN56); Container: Reel Pack, SMD, 13"
A good PCB layout for the PCA9506BS involves keeping the input and output traces as short as possible, using a solid ground plane, and minimizing the distance between the device and the capacitors. It's also recommended to use a 4-layer PCB with a dedicated power plane and a dedicated ground plane.
To ensure reliable communication, make sure to use the correct baud rate, data bits, and stop bits in the microcontroller. Also, use a pull-up resistor on the SCL line and a pull-down resistor on the SDA line. Additionally, ensure that the microcontroller's I2C clock frequency is within the PCA9506BS's specified range.
The PCA9506BS supports cable lengths up to 10 meters (33 feet) at a data rate of 100 kHz. However, the actual cable length may vary depending on the specific application, cable quality, and environmental conditions.
The PCA9506BS has built-in error detection and correction mechanisms. In case of errors, the device will retry the transmission up to 3 times. If the error persists, the device will NACK the transmission. It's recommended to implement a retry mechanism in the microcontroller to handle errors and ensure reliable data transfer.
The PCA9506BS has a typical current consumption of 1.5 mA in active mode, 1.2 mA in standby mode, and 0.5 mA in power-down mode. The actual power consumption may vary depending on the specific application, operating frequency, and environmental conditions.
PCA9506BS,118 datasheet
by NXP Semiconductors
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