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PCA9306D,118 PCA9306D
Configuration
1 options
Configuration
24+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- NXP PCA9306D, 118
- Type
- NXP
- Minimum package
- 2500 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- NXP
- Electronic Component
- PCA9306D,118
- Electronic Component
- 1
- Package
- SO-8
- Electronic Component
- Converter / Level positions
- Electronic Component
- 0.255g
- Electronic Component
- 1
- Electronic Component
- 1
- Features
- Output
- Electronic Component
- BM0231096211
- 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.
PCA9306D,118 产品概述
一、产品简介
PCA9306D,118 是恩智浦（NXP）推出的一款双通道双向电平转换器，专为开放漏极（open-drain）总线信号（如 I2C/SMBus/PMBus 等）在不同电源域之间的安全透明传输而设计。器件采用单一 SO-8 封装，内含两路通道，支持自动方向检测和无源传输机制，使得在低电压与高电压系统之间实现双向通信变得简单可靠。
二、主要特性
- 通道类型：双向（自动方向检测），适用于开放漏极信号。
- 通道数：1 个器件内含 2 路通道。
- 数据速率：最高支持 2 Mbps，能满足快速模式及更高速率的总线需求。
- 电源范围：VCCA = 1.0 V ~ 3.6 V；VCCB = 1.8 V ~ 5.5 V，覆盖从低压 MCU 到 5 V 外设的常见组合。
- 输出形式：开漏（open-drain），需外部上拉电阻到各侧电源。
- 工作温度：-40 ℃ ~ +105 ℃，适合工业级应用。
- 封装：SO-8，便于 PCB 布局与手工焊接调试。
三、电气与使用要点
PCA9306D 工作原理基于双向 MOSFET（传输门）和外部上拉电阻：每侧总线需配置独立上拉电阻，分别拉至对应电源（VCCA、VCCB）。器件不提供内部上拉，因此在设计时应根据总线频率与负载电容选择合适阻值；典型值范围为 2 kΩ ~ 10 kΩ，高速时取较小阻值。器件适用于开漏/开集电极驱动，不适用于推挽输出信号的直接电平转换。建议在 VCCA、VCCB 靠近引脚处放置 0.1 μF 旁路电容以抑制噪声。
四、典型应用场景
- 多电压系统中 I2C 总线电平匹配（MCU 1.8 V 与外设 3.3 V / 5 V）。
- 嵌入式设备与传感器之间的 SMBus/PMBus 接口电平转换。
- 电源管理、外设扩展板、工业控制模块的跨域通信。
- 需要低成本、低功耗且透明双向电平转换的场合。
五、设计与布局建议
- 将上拉电阻放置在靠近器件或靠近主控端以控制上升时间与回路电感。
- 保证两侧总线的回流路径短且阻抗可控，避免长线造成信号完整性问题。
- 若总线包含多个节点，注意总线电容累积对上升沿和总线带宽的影响，必要时降低上拉阻值或进行分段设计。
- 禁止在任一侧使用主动推挽驱动直接驱动另一侧总线；若存在推挽信号，需采用专用双向隔离或电平翻转器。
- 温度与散热：在高温与大电容负载条件下，评估上拉电阻功耗与器件工作点，确保在 -40 ℃ ~ +105 ℃ 下稳定运行。
六、封装与订购信息
PCA9306D,118 采用 SO-8 封装，适合批量贴装及手工调试。型号后缀与包装方式（如卷带、散装）请参考恩智浦最新产品目录与订购信息。如需样片或大批量采购，建议向授权分销商确认型号后缀与可得性，同时索取最新数据手册以获取完整时序图、电气特性表与典型应用电路。
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