PCA9509 - Level translating I2C-bus/SMBus repeater

NXP

The PCA9509 by NXP is a Level translating I2C-bus/SMBus repeater. Below is the official datasheet preview.

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PCA9509 Level translating I2C-bus/SMBus repeater by NXP - Datasheet Preview — Official preview page of the **PCA9509** Level translating I2C-bus/SMBus repeater datasheet (NXP).

Datasheet Details

Part number	PCA9509
Manufacturer	NXP
File Size	301.61 KB
Description	Level translating I2C-bus/SMBus repeater
Datasheet	PCA9509_PhilipsSemiconductors.pdf
Additional preview pages of the PCA9509 datasheet.

PCA9509 Product details

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.

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Other Datasheets by NXP

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Published: Jan 19, 2007 |