产品概览
The TXS02612RTWR from Texas Instruments is an SDIO port expander with voltage-level translation in a WQFN-24 (RTW) 4×4 mm package. It integrates a 6-channel SPDT switch with level translation, allowing a single SDIO port to interface with two SDIO peripherals at independent voltages (1.1V to 3.6V), with +/-8 kV IEC ESD on the B port.
主要规格
| 功能 | 6-channel SPDT switch + level translation |
| Ports | 1 SDIO (A) to 2 SDIO (B0/B1) |
| 数据速率 | 120 Mbps |
| Voltage Range | 1.1V – 3.6V (VCCA, VCCB0, VCCB1) |
| Supply Current | 36 uA max |
| Select Input | SEL (referenced to VCCA) |
| ESD (B Port) | +/-8 kV IEC 61000-4-2 contact |
| 包装 | WQFN-24 (RTW) 4×4 mm |
| Temperature | -40至+85摄氏度 |
特点
- 6-to-12 demultiplexer/multiplexer for SDIO port expansion
- Built-in level translation eliminates voltage mismatch between baseband and SD card
- Three independent supply rails (VCCA, VCCB0, VCCB1) for maximum flexibility
- +/-8 kV IEC ESD on B port for robust SD card interface protection
- 70 kOhm pull-up resistors on unselected B port data and command lines
应用
- Cell phone baseband to SD card and SDIO peripheral interfacing
- Bluetooth and WLAN module expansion via SDIO
- Mobile TV and DVB-H module connection
- Multi-card SD/MMC reader designs
- Portable consumer electronics SDIO multiplexing