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位置:PCA9849PW > PCA9849PW詳情

PCA9849PW中文資料

廠家型號

PCA9849PW

文件大小

449.18Kbytes

頁面數(shù)量

27

功能描述

4-channel ultra-low voltage, Fm I2C-bus multiplexer with reset

數(shù)據(jù)手冊

原廠下載下載地址一下載地址二到原廠下載

生產(chǎn)廠商

恩XP

PCA9849PW數(shù)據(jù)手冊規(guī)格書PDF詳情

1 General description

The PCA9849 is an ultra-low voltage, quad bidirectional translating multiplexer controlled via the I2C-bus. The SCL/SDA upstream pair fans out to four downstream pairs, or channels. A single SCx/SDx channel can be selected, determined by the programmable control register. This feature allows multiple devices with the same I2C-bus address to reside on the same bus. The multiplexer device can also separate a heavily loaded I2C-bus into separate bus segments, eliminating the need for a bus buffer. An active LOW reset input allows the PCA9849 to recover from a situation where one of the downstream I2Cbuses is stuck in a LOW state. Pulling the RESET pin LOW resets the I2C-bus state machine and deselects all the channels, as does the internal Power-On Reset (POR) function. The pass gates of the switches are constructed such that the VDD1 pin is used to limit the maximum high voltage which is passed by the PCA9849. This allows the use of different bus voltages on each channel, so that 0.8 V, 1.8 V, 2.5 V or 3.3 V parts can communicate without any additional protection. External pull-up resistors pull the bus up to the desired voltage level for each channel. All I/O pins are 3.6 V tolerant.

2 Features and benefits

? Ultra-low voltage operation, down to 0.8 V to interface with next-generation CPUs

? 1-of-4 bidirectional translating multiplexer

? Fm+ I2C-bus interface logic; compatible with SMBus standards

? Active LOW reset input

? 2 address pins allowing up to 16 devices on the I2C-bus

? Channel selection via I2C-bus

? Power-up with all switch channels deselected

? Low Ron switches

? Allows voltage level translation between 0.8 V, 1.8 V, 2.5 V and 3.3 V buses

? Reset via I2C-bus software command

? I2C Device ID function

? No glitch on power-up

? Supports hot insertion since all channels are de-selected at power-on

? Low standby current

? 3.6 V tolerant inputs

? 0 Hz to 1 MHz clock frequency

? ESD protection exceeds 6000 V HBM per JESD22-A114 and 1000 V CDM per JESD22-C101

? Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA

? Offered in TSSOP16 package

更新時間:2025-7-10 9:37:00
供應商 型號 品牌 批號 封裝 庫存 備注 價格
恩XP
24+
TSSOP16
2669
只做原裝,提供一站式配單服務,代工代料。BOM配單
恩XP
20+
SSOP-16
4854
就找我吧!--邀您體驗愉快問購元件!
恩XP
22+
16TSSOP
9000
原廠渠道,現(xiàn)貨配單
恩XP
25+
TSSOP-16
8880
原裝認準芯澤盛世!
恩XP
23+
TSSOP-16
8080
原裝正品,支持實單
恩XP
21+
TSSOP-16
2500
進口原裝,優(yōu)勢現(xiàn)貨
恩XP
2021+
TSSOP-16
12000
只做原裝,可提供樣品
恩XP
25
TSSOP-16
6000
原裝正品
恩XP
2023+
TSSOP-16
6000
原裝正品現(xiàn)貨、支持第三方檢驗、終端BOM表可配單提供
恩XP
23+
TSSOP-16
12700
買原裝認準中賽美

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