NXP Semiconductors

PCA9306

Dual bidirectional I2C-bus and SMBus voltage-level translator

6 Functional description

Refer to Figure 1.

6.1 Function table

H = HIGH level; L = LOW level.

Input EN[1]

Function

H

SCL1 = SCL2; SDA1 = SDA2

L

disconnect

Table 4. Function selection (example)

[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.

7 Limiting values

In accordance with the Absolute Maximum Rating System (IEC 60134).

Over operating free-air temperature range.

Symbol

Parameter

Conditions

Min

Max

Unit

Vref(1)

reference voltage (1)

-0.5

+6

V

Vbias(ref)(2) reference bias voltage (2)

-0.5

+6

V

VI

input voltage

-0.5[1]

+6

V

VI/O

voltage on an input/output pin

-0.5[1]

+6

V

Ich

channel current (DC)

-

128

mA

IIK

input clamping current

VI < 0 V

-

-50

mA

Tstg

storage temperature

-65

+150

°C

Table 5. Limiting values

[1]

The input and input/output negative voltage ratings may be exceeded if the input and input/output clamp current ratings

are observed.

8 Recommended operating conditions

Symbol

Parameter

Conditions

Min

Max

Unit

VI/O

voltage on an input/output pin SCL1, SDA1,

SCL2, SDA2

0

5

V

Vref(1)[1]

reference voltage (1)

VREF1

0

5

V

Vbias(ref)(2)[1] reference bias voltage (2)

VREF2

0

5

V

VI(EN)

input voltage on pin EN

0

5

V

Isw(pass)

pass switch current

-

64

mA

Tamb

ambient temperature

operating in free-air

-40

+105

°C

Table 6. Operating conditions

[1]

Vref(1) ≤ Vbias(ref)(2) - 1 V for best results in level shifting applications.

PCA9306

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Product data sheet

Rev. 9.3 — 14 November 2022

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