Texas Instruments TMUX1575 2:1 SPDT Powered-Off Protection Switch
Texas Instruments TMUX1575 2:1 SPDT Powered-Off Protection Switch is a complementary metal-oxide semiconductor (CMOS) switch with four channels in a 2:1 (SPDT) configuration. Its small size and operating supply voltage of 1.08V to 3.6V allows it to be used in various applications, from servers and communication equipment to personal electronics. The device supports bidirectional analog and digital signals on the source (SxA, SxB) and drain (Dx) pins and can pass signals up to VDD x 2 with a maximum input/output voltage of 3.6V.
Powered-off protection on the signal path of the Texas Instruments TMUX1575 provides isolation when the supply voltage is removed (VDD = 0V). Without this protection feature, switches can back-power the supply rail through an internal ESD diode and potentially damage the system.
Fail-safe logic circuitry allows voltages on the logic control pins to be applied before the supply pin, protecting the device from potential damage. All control inputs have 1.2V logic-compatible thresholds, eliminating the need for external logic translation. An integrated pull-down resistor on the logic pins removes external components to reduce system size and cost.
Features
- 1.08V to 3.6V wide supply range
- 5pF low on-capacitance
- 1.8GHz high bandwidth
- -40°C to +125°C operating temperature
- 1.2V logic compatible
- Supports input voltage beyond supply
- Integrated pull-down resistor on logic pins
- Bidirectional signal path
- Fail-safe logic
- Powered-off protection
Applications
- Flash memory sharing
- JTAG multiplexing
- SPI multiplexing
- eMMC multiplexing
- Smartwatches
- Smart trackers
- Mobile phones
- PC & notebooks
- Network Interface Card (NIC)
- Servers
- Datacenter switches & routers
- Wireless infrastructure
- Building automation
- ePOS
Functional Block Diagram
Related Development Tool
Texas Instruments TMUX1575EVM Switch Evaluation Module (EVM)
Supports the evaluation of the TMUX1575 device in the 16-pin WSCP (YCJ) package.