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PCA9306GM,125 PCA9306GM
Configuration
1 options
Configuration
24+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- NXP PCA9306GM, 125
- Type
- NXP
- Minimum package
- 4000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- NXP
- Electronic Component
- PCA9306GM,125
- Electronic Component
- 1
- Package
- XQFN-8(1.6x1.6)
- Electronic Component
- Converter / Level positions
- Electronic Component
- 0.016g
- Electronic Component
- 1
- Electronic Component
- 1
- Features
- Output
- Electronic Component
- BM0257165777
- Operating Temperature
- 40℃~+105℃
- Data
- 2Mbps
- Output Type
- Electronic Component
- Type
- Electronic Component
- Operating Voltage(VCCA)
- 1V~3.6V
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
PCA9306GM,125 — 双向电压电平转换器产品概述
一、产品简介
PCA9306GM,125（NXP）是一款双通道、单电路的双向电压电平转换器，专为I²C/SMBus等开漏总线设计。器件采用小尺寸XQFN-8（1.6×1.6 mm）封装，适合空间受限的移动、物联网与消费类电子产品。其典型数据速率可达2 Mbps，支持自动方向检测，工作温度范围宽（-40℃ 至 +105℃），适应工业级应用。
二、主要电气特性
- 通道类型：双向（2通道）
- 电路数：1个器件包含2路通道
- 数据速率：最高可达 2 Mbps
- 工作电压：VCCA = 1.0 V ~ 3.6 V；VCCB = 1.8 V ~ 5.5 V
- 输出类型：开漏（需外部上拉电阻）
- 自动方向检测：支持基于MOSFET双向传导的自动方向切换
- 工作温度：-40℃ ~ +105℃
- 封装：XQFN-8（1.6×1.6 mm）
- 品牌：NXP（恩智浦）
三、工作原理要点
PCA9306采用低门控电阻的MOSFET结构与两侧独立电源引脚配合外部上拉电阻实现双向电平移位。任一侧被拉低时，MOSFET导通，将信号传递到另一侧；高电平时器件基本呈高阻态，依赖各侧上拉到相应电源电平。该结构使其能在不需要方向控制信号的情况下自动完成双向传输，特别适合I²C之类的开漏总线。
四、典型应用场景
- 不同电压域的I²C/SMBus互联（MCU、传感器、PMIC等）
- 电源管理与电池监控系统的信号隔离与电平匹配
- 移动设备、可穿戴与消费电子中的低功耗接口电平转换
- 多板互联与模块化设计中不同VCC域间的总线桥接
五、设计要点与注意事项
- 上拉电阻：器件为开漏结构，必须在VCCA和VCCB侧分别配置适当值的上拉电阻，上拉值取决于总线容量和所需速率（高速率需较小阻值以满足上升时间要求）。
- 总线容量与速率：在高达2 Mbps的数据速率下，须控制总线寄生电容与拓扑，避免过大上拉时间常数。
- 不能用于推挽驱动信号：仅适用于开漏/开集电极接口，推挽输出或高频差分信号不适用。
- 布局与去耦：VCCA/VCCB应靠近器件布置去耦电容，SDA/SCL走线尽量短且并行，减少串扰。
- 热与可靠性：XQFN-8小封装利于热散与系统小型化，但在高功率或高环境温度时需评估热特性。
六、选型与替代考虑
PCA9306GM适合需要超小封装与宽电压兼容的双向开漏转换场合。若需要更高速率、更大驱动能力或推挽支持，可考虑其他专用电平转换器或隔离器。选型时注意工作电压范围与封装形式以匹配系统布局与电气需求。
总结：PCA9306GM,125以其自动方向检测、宽电压兼容和小尺寸封装，在多电压域I²C互联中提供简单可靠的电平转换解决方案。合理选择上拉和良好的PCB布局能最大化其性能并保证系统可靠性。
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