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PCAL6416AHF,128 PCAL6416AHF
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- NXP PCAL6416AHF, 128
- Type
- NXP
- Minimum package
- 6000 编带
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- NXP
- Electronic Component
- PCAL6416AHF,128
- Electronic Component
- 1
- Package
- HWQFN-24
- Electronic Component
- I / O Expander
- Electronic Component
- 0.093g
- Electronic Component
- 1
- I / O
- 16
- Features
- Built-in LEDDriver; positions; and; IOLevel
- Electronic Component
- BM0231111240
- Operating Temperature
- 40℃~+85℃
- Operating Voltage
- 1.65V~5.5V
- Interface Type
- I2C；SMBus
- Current(IOL)
- 25mA
- Clock Frequency(fc)
- 400kHz
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
PCAL6416AHF,128 产品概述
一、产品简介
PCAL6416AHF,128 为恩智浦（NXP）推出的一款高集成度 I/O 扩展器，采用 HWQFN-24 封装。器件通过 I2C / SMBus 总线与主控通信，提供 16 路可编程通用 I/O（GPIO），并带有中断输出，适用于需要扩展 GPIO 数量且对功耗与工作电压范围有较高要求的嵌入式与消费类产品设计。
二、主要参数
- 接口类型：I2C；SMBus
- I/O 数量：16（通常为两组 8-bit 端口）
- 中断输出：支持（用于主控快速响应 I/O 事件）
- 输出类型：开漏；推挽式（可满足不同负载与接口需求）
- 工作电压：1.65 V ～ 5.5 V（宽电压范围，易于不同电源域兼容）
- 灌电流 (IOL)：25 mA（单端口/单引脚输出驱动能力，请参考芯片手册具体限制）
- 时钟频率 (fc)：400 kHz（支持标准与快速 I2C 速率）
- 工作温度：-40 ℃ ～ +85 ℃（工业级）
- 支持设备数量：2（器件地址位等使能总线上最多并联两个相同器件）
- 静态电流 (Iq)：1 µA（典型值，适合电池供电应用）
- 封装：HWQFN-24
- 品牌：NXP（恩智浦）
三、功能与特性
PCAL6416AHF 提供灵活的 I/O 配置能力，通常包括方向配置、输入读取、输出写入及极性反转等寄存器（具体寄存器与位域请参考数据手册）。器件具备中断输出，当配置为输入并使能中断后，GPIO 状态变化可触发中断线，从而减少主控制器轮询负担。开漏与推挽式输出选项可支持不同驱动场景：开漏适合集电极-拉高结构与多主设备总线，推挽式适合主动驱动负载。
四、典型应用场景
- 嵌入式系统 GPIO 扩展（按键扫描、指示灯、外设控制）
- 工业与通讯设备的状态监测与信号采集
- 消费电子与便携设备的低功耗控制节点
- 多模块系统中不同电压域之间的接口扩展（1.65–5.5 V 兼容性有利于直接连接）
五、设计与使用建议
- 对于开漏输出，请在总线上或目标端添加上拉电阻；上拉阻值需根据工作电压与 I2C 时序计算。
- 主控侧需提供合适的 I2C 拉升与限流保护，保证 400 kHz 下信号完整性。
- 注意 IOL 限值（25 mA），避免在单引脚或单端口上长期超过额定电流以防过热或损伤。
- 利用中断功能可降低主控轮询与功耗，建议设计清晰的中断清除与去抖逻辑。
- 在多器件并联时，合理配置地址位并验证总线负载与电容以保持通信可靠性。
- PCB 布局时关注 HWQFN-24 散热与接地，必要时在热焊盘下增加过孔改善散热。
六、注意事项
在最终设计前请阅读恩智浦官方数据手册与典型应用电路，核对引脚定义、电气特性（绝对最大额定值、ESD 保护要求等）与寄存器映射，以保证产品在目标系统中的可靠性与长期稳定工作。
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