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PCA9541BS/02中文资料
PCA9541BS/02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
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
恩XP |
22+ |
16HVQFN |
9000 |
原厂渠道,现货配单 |
|||
恩XP |
25+ |
QFN-16 |
1001 |
就找我吧!--邀您体验愉快问购元件! |
|||
恩XP |
25+ |
电联咨询 |
7800 |
公司现货,提供拆样技术支持 |
|||
恩XP |
25+ |
16-HVQFN(4x4) |
9350 |
独立分销商 公司只做原装 诚心经营 免费试样正品保证 |
|||
恩XP |
24+ |
16-HVQFN(4x4) |
35200 |
一级代理/放心采购 |
|||
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 |
23+ |
NA |
6000 |
全新、原装 |
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Datasheet数据表PDF页码索引
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