935296524125 datasheet, PDF - EEWORLD Datasheet

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935296524125: DescriptionInterface Circuit; CategoryAnalog mixed-signal IC Drivers and interfaces; File Size450KB，35 Pages; ManufacturerNXP; Websitehttps://www.nxp.com

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935296524125 Overview

Interface Circuit

935296524125 Parametric

Parameter Name	Attribute value
Maker	NXP
Reach Compliance Code	unknown
Interface integrated circuit type	INTERFACE CIRCUIT
Base Number Matches	1

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PCA9306

Dual bidirectional I

C-bus and SMBus voltage-level translator

Rev. 8 — 22 January 2014

Product data sheet

1. General description

The PCA9306 is a dual bidirectional I

C-bus and SMBus voltage-level translator with an

enable (EN) input, and is operational from 1.0 V to 3.6 V (V

ref(1)

) and 1.8 V to 5.5 V

bias(ref)(2)

The PCA9306 allows bidirectional voltage translations between 1.0 V and 5 V without the

use of a direction pin. The low ON-state resistance (R

) of the switch allows connections

to be made with minimal propagation delay. When EN is HIGH, the translator switch is on,

and the SCL1 and SDA1 I/O are connected to the SCL2 and SDA2 I/O, respectively,

allowing bidirectional data flow between ports. When EN is LOW, the translator switch is

off, and a high-impedance state exists between ports.

The PCA9306 is not a bus buffer like the PCA9509 or PCA9517A that provide both level

translation and physically isolates the capacitance to either side of the bus when both

sides are connected. The PCA9306 only isolates both sides when the device is disabled

and provides voltage level translation when active.

The PCA9306 can also be used to run two buses, one at 400 kHz operating frequency

and the other at 100 kHz operating frequency. If the two buses are operating at different

frequencies, the 100 kHz bus must be isolated when the 400 kHz operation of the other

bus is required. If the master is running at 400 kHz, the maximum system operating

frequency may be less than 400 kHz because of the delays added by the translator.

As with the standard I

C-bus system, pull-up resistors are required to provide the logic

HIGH levels on the translator’s bus. The PCA9306 has a standard open-collector

configuration of the I

C-bus. The size of these pull-up resistors depends on the system,

but each side of the translator must have a pull-up resistor. The device is designed to work

with Standard-mode, Fast-mode and Fast-mode Plus I

C-bus devices in addition to

SMBus devices. The maximum frequency is dependent on the RC time constant, but

generally supports > 2 MHz.

When the SDA1 or SDA2 port is LOW, the clamp is in the ON-state and a low resistance

connection exists between the SDA1 and SDA2 ports. Assuming the higher voltage is on

the SDA2 port when the SDA2 port is HIGH, the voltage on the SDA1 port is limited to the

voltage set by VREF1. When the SDA1 port is HIGH, the SDA2 port is pulled to the drain

pull-up supply voltage (V

pu(D)

) by the pull-up resistors. This functionality allows a

seamless translation between higher and lower voltages selected by the user without the

need for directional control. The SCL1/SCL2 channel also functions as the SDA1/SDA2

channel.

935296524125 Related Products

	935296524125	935283119118	935290855125	PCA9306GD1,125	PCA9306DC1	PCA9306DC,125	935283118118	935283122125	935283123125	935283124125
Description	Interface Circuit	Interface Circuit	Interface Circuit	IC TRNSLTR BIDIRECTIONAL 8XSON	Level converter		Interface Circuit	Interface Circuit	Interface Circuit	Interface Circuit
Reach Compliance Code	unknown	unknown	unknown	compliant	compliant	compliant	unknown	unknown	unknown	unknown
Interface integrated circuit type	INTERFACE CIRCUIT	INTERFACE CIRCUIT	INTERFACE CIRCUIT	INTERFACE CIRCUIT	INTERFACE CIRCUIT	INTERFACE CIRCUIT	INTERFACE CIRCUIT	INTERFACE CIRCUIT	INTERFACE CIRCUIT	INTERFACE CIRCUIT
Maker	NXP	NXP	NXP	NXP	NXP	NXP	NXP	-	-	-

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