位置:PCA9541BS/03 > PCA9541BS/03详情

PCA9541BS/03中文资料

厂家型号

PCA9541BS/03

文件大小

216.82Kbytes

页面数量

43

功能描述

2-to-1 I2C-bus master selector with interrupt logic and reset

数据手册

原厂下载下载地址一下载地址二到原厂下载

生产厂商

恩XP

PCA9541BS/03数据手册规格书PDF详情

General description

The PCA9541 is a 2-to-1 I2C-bus master selector designed for high reliability dual master I2C-bus applications where system operation is required, even when one master fails or the controller card is removed for maintenance. The two masters (for example, primary and back-up) are located on separate I2C-buses that connect to the same downstream I2C-bus slave devices. I2C-bus commands are sent by either I2C-bus master and are used to select one master at a time. Either master at any time can gain control of the slave devices if the other master is disabled or removed from the system. The failed master is isolated from the system and will not affect communication between the on-line master and the slave devices on the downstream I2C-bus.

Features

■ 2-to-1 bidirectional master selector

■ I2C-bus interface logic; compatible with SMBus standards

■ PCA9541/01 powers up with Channel 0 selected

■ PCA9541/03 powers up with no channel selected and either master can take control of the bus

■ Active LOW interrupt input

■ 2 active LOW interrupt outputs

■ Active LOW reset input

■ 4 address pins allowing up to 16 devices on the I2C-bus

■ Channel selection via I2C-bus

■ Bus initialization/recovery function

■ Bus traffic sensor

■ Low Ron switches

■ Allows voltage level translation between 1.8 V, 2.5 V, 3.3 V and 5 V buses

■ No glitch on power-up

■ Supports hot insertion

■ Software identical for both masters

■ Low standby current

■ Operating power supply voltage range of 2.3 V to 5.5 V

■ 6.0 V tolerant inputs

■ 0 Hz to 400 kHz clock frequency

■ ESD protection exceeds 2000 V HBM per JESD22-A114, 200 V MM per JESD22-A115, and 1000 V CDM per JESD22-C101

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

■ Packages offered: SO16, TSSOP16, HVQFN16

Applications

■ High reliability systems with dual masters

■ Gatekeeper multiplexer on long single bus

■ Bus initialization/recovery for slave devices without hardware reset

■ Allows masters without arbitration logic to share resources

更新时间:2025-10-18 8:02:00
供应商 型号 品牌 批号 封装 库存 备注 价格
恩XP
23+
NA
6000
原装现货,实单价格可谈
恩XP
24+
QFN
5154
只做原厂渠道 可追溯货源
恩XP
24+
QFN
80000
只做自己库存 全新原装进口正品假一赔百 可开13%增
恩XP
25+
QFN
3000
百分百原装正品 真实公司现货库存 本公司只做原装 可
恩XP
23+
SOP8
5000
原装正品,假一罚十
恩XP
16+
NA
8800
诚信经营
恩XP
23+
QFN
8560
受权代理!全新原装现货特价热卖!
恩XP
22+
16HVQFN
9000
原厂渠道,现货配单
恩XP
25+
SOT629
188600
全新原厂原装正品现货 欢迎咨询
恩XP
23+
QFN
6000
全新原装正品现货,支持订货