产品概览
The PCAL6416AHF from NXP Semiconductors is a 16-bit I2C/SMBus GPIO expander with Agile I/O features in a 24-pin HWQFN (4×4 mm) package. It provides remote I/O expansion via the I2C bus with dual-supply voltage ranging from 1.65V to 5.5V, enabling level translation between incompatible voltage domains. Enhanced features include programmable pull-up/pull-down resistors, output drive strength control, input latching, and maskable interrupts.
主要规格
| I/O Channels | 16 (2 ports x 8 bits) |
| Interface | I2C/SMBus up to 400 kHz |
| Supply Voltage (VDD I2C) | 1.65V to 5.5V |
| Supply Voltage (VDD P) | 1.65V to 5.5V |
| Sink Current per Bit | 25 mA max |
| Source Current per Bit | 50 mA max |
| I2C Addresses | 2 (hardware selectable via ADDR pin) |
| Interrupt Output | Open-drain, maskable |
| 工作温度 | -40°C to +85°C |
| 包装 | HWQFN-24 (4 x 4 x 0.75 mm) |
特点
- Agile I/O: programmable output drive strength, latchable inputs
- Integrated pull-up and pull-down resistors per I/O
- Built-in level translation between I2C bus and port sides
- Maskable interrupt with input latch for reliable event capture
- Programmable open-drain or push-pull output configuration
- Pin-to-pin compatible with PCA6416A, powers up with interrupts masked
应用
- Smartphone and tablet I/O expansion
- LED and button matrix control
- Sensor interface aggregation
- Industrial control I/O modules
- Battery-powered portable device GPIO