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PCA9306DC1125中文資料恩智浦?jǐn)?shù)據(jù)手冊(cè)PDF規(guī)格書

PCA9306DC1125
廠商型號(hào)

PCA9306DC1125

功能描述

Dual bidirectional I2C-bus and SMBus voltage-level translator

文件大小

624.21 Kbytes

頁面數(shù)量

38

生產(chǎn)廠商 NXP Semiconductors
企業(yè)簡稱

nxp恩智浦

中文名稱

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更新時(shí)間

2024-10-30 22:30:00

PCA9306DC1125規(guī)格書詳情

1 General description

The PCA9306 is a dual bidirectional I2C-bus and SMBus voltage-level translator with an enable (EN) input, and is operational from 1.0 V to 3.6 V (Vref(1)) and 1.8 V to 5.5 V (Vbias(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 (Ron) 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 isolate 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 controller 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 I2C-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 I2C-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 I2C-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 (Vpu(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.

All channels have the same electrical characteristics and there is minimal deviation from one output to another in voltage or propagation delay. This is a benefit over discrete transistor voltage translation solutions, since the fabrication of the switch is symmetrical. The translator provides excellent ESD protection to lower voltage devices, and at the same time protects less ESD-resistant devices.

2 Features and benefits

? 2-bit bidirectional translator for SDA and SCL lines in mixed-mode I2C-bus applications

? Standard-mode, Fast-mode, and Fast-mode Plus I2C-bus and SMBus compatible

? Less than 1.5 ns maximum propagation delay to accommodate Standard-mode and Fast-mode I2C-bus

devices and multiple controllers

? Allows voltage level translation between:

– 1.0 V Vref(1) and 1.8 V, 2.5 V, 3.3 V or 5 V Vbias(ref)(2)

– 1.2 V Vref(1) and 1.8 V, 2.5 V, 3.3 V or 5 V Vbias(ref)(2)

– 1.8 V Vref(1) and 3.3 V or 5 V Vbias(ref)(2)

– 2.5 V Vref(1) and 5 V Vbias(ref)(2)

– 3.3 V Vref(1) and 5 V Vbias(ref)(2)

? Provides bidirectional voltage translation with no direction pin

? Low 3.5 Ω ON-state connection between input and output ports provides less signal distortion

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

? 5 V tolerant I2C-bus I/O ports to support mixed-mode signal operation

? High-impedance SCL1, SDA1, SCL2 and SDA2 pins for EN = LOW

? Lock-up free operation

? Flow through pinout for ease of printed-circuit board trace routing

? ESD protection exceeds 2000 V HBM per JESD22-A114 and 1000 V CDM per JESD22-C101

? Packages offered: SO8, TSSOP8, VSSOP8, XQFN8, XSON8, X2SON8

產(chǎn)品屬性

  • 型號(hào):

    PCA9306DC1125

  • 制造商:

    Rochester Electronics LLC

  • 制造商:

    NXP

  • 制造商:

    NXP Semiconductors

供應(yīng)商 型號(hào) 品牌 批號(hào) 封裝 庫存 備注 價(jià)格
NXP
2020+
VSSOP8
80000
只做自己庫存,全新原裝進(jìn)口正品假一賠百,可開13%增
詢價(jià)
NXP(恩智浦)
23+
VSSOP-8
9865
原裝正品,假一賠十
詢價(jià)
NXP/恩智浦
23+
TSSOP8
51000
實(shí)單可談 只有原裝
詢價(jià)
NXP/恩智浦
23+
VSSOP-8
90000
只做原裝 全系列供應(yīng) 價(jià)格優(yōu)勢(shì) 可開增票
詢價(jià)
NXP
23+
8-VFSOP
17686
確保原裝正品,專注終端客戶一站式BOM配單
詢價(jià)
NXP/恩智浦
23
VSOP8
9800
全新原裝現(xiàn)貨 假一賠十
詢價(jià)
NXP
VSSOP8
30000
集團(tuán)化配單-有更多數(shù)量-免費(fèi)送樣-原包裝正品現(xiàn)貨-正規(guī)
詢價(jià)
NXP -恩智浦 /供應(yīng)
23+
NA
60000
代理元器件優(yōu)質(zhì)供應(yīng)/全新現(xiàn)貨/長期供應(yīng)
詢價(jià)
NXP(恩智浦)
23+
VSSOP8
7350
現(xiàn)貨供應(yīng),當(dāng)天可交貨!免費(fèi)送樣,原廠技術(shù)支持!!!
詢價(jià)
NXP(恩智浦)
23+
NA/
8735
原廠直銷,現(xiàn)貨供應(yīng),賬期支持!
詢價(jià)