PCA8550 4位多路复用/1位闭锁的5位I2C EEPROM DIP开关
4位二选一 I²C多路复用器的主要功能是从非易失性寄存器选择4位输入或数据并将该值驱动至输出引脚。还提供一个额外的非多路复用寄存器输出。非多路复用输出为闭锁，以防I²C写入非易失性寄存器过程中输出值发生改变。提供写保护输入以启用/禁用写入非易失性寄存器的能力。“超驰”输入功能强制所有输出为逻辑0。
产品特点 Features
- 4位二选一多路复用器、1位闭锁DIP开关
- 5位内部非易失性寄存器
- 超驰输入强制所有输出为逻辑0
- 可通过I²C总线进行内部非易失性寄存器写入/读取
- 写保护引脚可启用/禁用I²C写入至寄存器
- 2.5 V多路复用输出
- 3.3 V非多路复用输出（闭锁）
- 5 V耐受输入
- 非常适用于PC主板的“无跳线”配置
- 为在Pentium Pro/Pentium IItm系统中使用而设计
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产品实物图
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封装
| 型号 |
可订购的器件编号 |
订购码 (12NC) |
产品状态 |
封装 |
| PCA8550D |
9352 614 57118 |
PCA8550D,118 |
量产 |
SO16
(SOT109-1) |
| PCA8550D |
9352 614 57112 |
PCA8550D,112 |
量产 |
SO16
(SOT109-1) |
| PCA8550D/G |
9352 760 99118 |
PCA8550D/G,118 |
量产 |
SO16
(SOT109-1) |
| PCA8550DB |
9352 614 58118 |
PCA8550DB,118 |
量产 |
SSOP16
(SOT338-1) |
| PCA8550DB |
9352 614 58112 |
PCA8550DB,112 |
量产 |
SSOP16
(SOT338-1) |
| PCA8550PW |
9352 598 70118 |
PCA8550PW,118 |
量产 |
TSSOP16
(SOT403-1) |
| PCA8550PW |
9352 598 70112 |
PCA8550PW,112 |
量产 |
TSSOP16
(SOT403-1) |
| PCA8550PW/DG |
9352 858 95118 |
PCA8550PW/DG,118 |
量产 |
TSSOP16
(SOT403-1) |
订货和供应
| 型号 |
订购码 (12NC) |
可订购的器件编号 |
化学成分 |
| PCA8550D |
9352 614 57118 |
PCA8550D,118 |
PCA8550D |
| PCA8550D |
9352 614 57112 |
PCA8550D,112 |
PCA8550D |
| PCA8550D/G |
9352 760 99118 |
PCA8550D/G,118 |
PCA8550D/G |
| PCA8550DB |
9352 614 58118 |
PCA8550DB,118 |
PCA8550DB |
| PCA8550DB |
9352 614 58112 |
PCA8550DB,112 |
PCA8550DB |
| PCA8550PW |
9352 598 70118 |
PCA8550PW,118 |
PCA8550PW |
| PCA8550PW |
9352 598 70112 |
PCA8550PW,112 |
PCA8550PW |
| PCA8550PW/DG |
9352 858 95118 |
PCA8550PW/DG,118 |
PCA8550PW/DG |
PCA8550 技术支持
| 档案名称 |
标题 |
类型 |
格式 |
| PCA8550 |
4-bit multiplexed/1-bit latched 5-bit I2C EEPROM DIP switch |
Data sheet |
pdf |
| AN10441 |
Level shifting techniques in I2C-bus design
|
Application note |
pdf |
| AN255 |
I2C / SMBus Repeaters, Hubs and Expanders
|
Application note |
pdf |
| AN10710 |
Features and applications of the PCA8550 I2C-bus extender
|
Application note |
pdf |
| 75016527 |
Extend standard I2C-bus devices without worrying about offset voltages; NXP I2C-bus extender PCA8550 in a proven application
|
Brochure |
pdf |
| 75016532 |
Extend the I2C-bus with advanced repeaters and hubs; NXP 2-channel I2C-bus repeaters PCA9515x and 5-channel I2C-bus hubs PCA9516x
|
Leaflet |
pdf |
| 75016080 |
Extend the reach of any I2C-bus system without special offset voltage levels; NXP I2C-bus extender PCA8550
|
Leaflet |
pdf |
| 75017424 |
NXP I2C-bus solutions 2013: Smart, simple solutions for the 12 most common design concerns
|
Leaflet |
pdf |
| UM10204 |
I2C-bus specification and user manual
|
User manual |
pdf |
| UM10206 |
I2C Demonstration Board 2005-1 Quick Start Guide
|
User manual |
pdf |
| UM10323 |
PCA9600 demonstration board OM6293
|
User manual |
pdf |
