NXP PCA9518PW,112 i2C I/O Expander TSSOP (Pk of 2)

Manufactured by NXP - Part # PCA9518PW,112
Pack of 2 Expanders

NXP PCA9518PW,112 i2C I/O Expander in a TSSOP Surface Mount package

Supplied in a sealed RS Components package of 2 Expanders.
RS Components Part # - 727-5670
RoHS Compliant Item

The PCA9518 is a BiCMOS integrated circuit intended for application in I2C-bus and SMBus systems.

While retaining all the operating modes and features of the I2C-bus system, it permits extension of the I2C-bus by buffering both the data (SDA) and the clock (SCL) lines, thus enabling virtually an unlimited number of buses of 400 pF.

The I2C-bus capacitance limit of 400 pF restricts the number of devices and bus length. Using the PCA9518 enables the system designer to divide the bus into an unlimited number of segments off of a hub where any segment to segment transition sees only one repeater delay and is multiple master capable on each segment.

Using multiple PCA9518 parts, any width hub (in multiples of five)1 can be implemented using the expansion pins.

The PCA9518 is a wider voltage range (2.3 V to 3.6 V) version of the PCA9518 and also improves partial power-down performance, keeping I2C-bus I/O pins in high-impedance state when VDD is below 2.0 V.

• Expandable 5 channel, bidirectional buffer
• i2C and SMBus compatible
• Active HIGH individual repeater enable inputs
• Open-drain inputs/outputs
• 0Hz to 400kHz clock frequency
• Pin Count 20
• Package Type SM TSSOP20
• Mounting Type Surface Mount
• Operating Temperature -40°C to +85°C