Description
The PCA9509 is a level translating I2C-bus/SMBus repeater that enables processor low voltage 2-wire serial bus to interface with standard I2C-bus or SMBus I/O.
Features
- Bidirectional buffer isolates capacitance and allows 400 pF on port B of the device.
- Voltage level translation from port A (1.35 V to VCC(B) 1.0 V) to port B (3.0 V to 5.5 V).
- Requires no external pull-up resistors on lower voltage port A.
- Active HIGH repeater enable input.
- Open-drain inputs/outputs.
- Lock-up free operation.
- Supports arbitration and clock stretching across the repeater.
- Accommodates Standard-mode and Fast-mode I2C-bus devices and multipl.
PCA9509 Datasheet
