Datasheet > NCA9306

NCA9306

更新时间： 2024-04-09 19:03:25

品牌	Logo	应用领域
纳芯微 - NOVOSENSE		开关转换器电平转换器
页数	文件大小	规格书
22页	4588K
描述
NCA9306器件是一款采用使能(EN)输入的双路双向I2C和SMBus电压电平转换器，可以在1.2V到5V之间实现双向电压转换而无须使用方向引脚。此开关具有低导通状态电阻(RON)，可以在最短传

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NCA9306 数据手册

NCA9306

Dual Bidirectional I2C Bus and SMBus

Voltage-Level Translator

Datasheet (EN) 1.2



Open-drain I²C I/O ports (SCL1, SDA1, SCL2, and SDA2)

Product Overview

5V Tolerant I²C I/O Ports to Support Mixed-mode Signal

Operation

The NCA9306 device is a dual bidirectional I²C and SMBus

voltage-level translator with an enable (EN) input, and is



High-impedance SCL1, SDA1, SCL2, and SDA2 pins for

EN = Low

operational from 1.2V to 3.3V V_REF1and 1.8V to 5.5V V_REF2

The NCA9306 device allows bidirectional voltage

translations between 1.2 V and 5 V, without the use of a

direction pin. The low ON-state resistance (R_ON) 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.



Lockup-free Operation for Isolation when EN = Low

Flow-through Pinout for Ease of Printed-circuit board

Trace Routing



Latch-up Performance Exceeds 100 mA Per JESD 78,

Class II

ESD Protection Exceeds JESD 22

– 2000V Human-Body Model (A114-A)

– 1000V Charged-Device Model (C101)

In addition to voltage translation, the NCA9306 device can

be used to isolate a 400kHz bus from a 100kHz bus by

controlling the EN pin to disconnect the slower bus during

fast-mode communication.

Applications



I²C, SMBus, PMBus, MDIO, UART, low-speed SDIO, GPIO,

and other two-signal interfaces



Servers

Key Features

Routers (Telecom Switching Equipment)

Personal Computers



2 Bit bidirectional translator for SDA and SCL lines in

mixed-mode I²C Applications



I²C and SMBus Compatible

Industrial Automation

Less than 1.5-ns Maximum Propagation Delay to

Accommodate Standard-mode and Fast-mode I²C Devices

and Multiple Masters

Device Information

Part Number

Package

Body Size



Allows Voltage-level Translation Between

– 1.2V V_REF1and 1.8V, 2.5V, 3.3V, or 5V V_REF2

– 1.8V V_REF1and 2.5V, 3.3V, or 5V V_REF2

– 2.5V V_REF1and 3.3V or 5V V_REF2

NCA9306-DVSR

VSSOP8

2.00mm × 2.30mm

NCA9306-DTSHR

TSSOP8

3.00mm × 3.00mm

Functional Block Diagrams

– 3.3V V_REF1and 5V V_REF2



Provides Bidirectional Voltage Translation with no

Direction Pin

Low 3.5 Ω ON-state Resistance Between Input and

Output Ports Provides Less Signal Distortion

Figure 1. NCA9306BlockDiagram

Page 1

12 3 4 5 6 7...22

中文翻译

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与NCA9306相关器件

型号	品牌	获取价格	描述	数据表
NCA9306DC	NEXPERIA	获取价格	2-bit bidirectional multi-voltage level translator; open-drain; push-pullProduction
NCA9306DC-Q100	NEXPERIA	获取价格	2-bit bidirectional multi-voltage level translator; open-drain; push-pullProduction
NCA9306DP	NEXPERIA	获取价格	2-bit bidirectional multi-voltage level translator; open-drain; push-pullProduction
NCA9306GX	NEXPERIA	获取价格	2-bit bidirectional multi-voltage level translator; open-drain; push-pullProduction
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NCA9534B	NOVOSENSE	获取价格	NCA9534B是一款16引脚CMOS器件，提供8位通用并行I2C总线数输入/输出GPIO
NCA9535BY	NEXPERIA	获取价格	Low-voltage 16-bit I2C and SMBus low-power I/O expander with interrupt output and configur
NCA9535BY-Q100	NEXPERIA	获取价格	Low-voltage 16-bit I2C and SMBus low-power I/O expander with interrupt output and configur
NCA9535PW	NEXPERIA	获取价格	Low-voltage 16-bit I²C and SMBus low-power I/
NCA9535PW-Q100	NEXPERIA	获取价格	Low-voltage 16-bit I²C and SMBus low-power I/

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