PCA9306DC1 datasheet(5/21 Pages) PHILIPS

Part #	PCA9306DC1

Description	Dual bidirectional I2C-bus and SMBus voltage-level translator

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Manufacturer	PHILIPS [NXP Semiconductors]

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PCA9306_2

Product data sheet

Rev. 02 — 21 February 2007

5 of 21

NXP Semiconductors

PCA9306

Dual bidirectional I2C-bus and SMBus voltage-level translator

5.2 Pin description

6.

Functional description

Refer to Figure 1 “Logic diagram of PCA9306 (positive logic)”.

6.1 Function table

[1]

EN is controlled by the Vbias(ref)(2) logic levels and should be at least 1 V higher than Vref(1) for best translator

operation.

Table 2.

Pin description

Symbol

Description

SO8,

TSSOP8 (MSOP8),

TSSOP8,

VSSOP8 (DC1),

XQFN8

VSSOP8 (DC)

GND

1

4

ground (0 V)

VREF1

2

1

low-voltage side reference supply voltage for

SCL1 and SDA1

SCL1

3

2

serial clock, low-voltage side; connect to

VREF1 through a pull-up resistor

SDA1

4

3

serial data, low-voltage side; connect to VREF1

through a pull-up resistor

SDA2

5

serial data, high-voltage side; connect to

VREF2 through a pull-up resistor

SCL2

6

serial clock, high-voltage side; connect to

VREF2 through a pull-up resistor

VREF2

7

high-voltage side reference supply voltage for

SCL2 and SDA2

EN

8

switch enable input; connect to VREF2 and

pull-up through a high resistor

Table 3.

Function selection (example)

H = HIGH level; L = LOW level.

Input EN[1]

Function

H

SCL1 = SCL2; SDA1 = SDA2

L

disconnect

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