Texas Instruments TMUX4157N 2:1 SPDT Negative Voltage Switch
Texas Instruments TMUX4157N 2:1 Single-Pole Double-Throw (SPDT) Negative Voltage Switch supports a negative supply rail only. The supply voltage can range from -4V to -12V and the device supports bidirectional analog and digital signals on the source (Sx) and drain (D) pins ranging from GND to VSS. The state of the select pin (SEL) controls which of the two sources pins are connected to the drain pin.
While TMUX4157N supports negative voltages on the supply pin and signal path, the logic input pin is controlled with a positive voltage to allow interfacing with typical control logic circuitry such as a GPIO signal. The logic input pin has 1.8V logic compatible thresholds and can operate as high as 5.5V for added system flexibility. Fail-Safe Logic circuitry allows voltages on the control pins to be applied before the supply pin, protecting the device from potential damage.
Fast transition times and high continuous current through the switch make the Texas Instruments TMUX4157N well suited for applications where the system needs to quickly switch between two different voltage inputs.
Features
- -4V to -12V negative voltage support
- Rail-to-rail operation
- Bidirectional signal path
- 1.8V logic compatible
- Fail-safe logic
- 150mA high continuous current support
- 1.8Ω low on-resistance
- -55°C to +125°C operating temperature
- Break-Before-Make switching
- 2000V ESD protection HBM
Applications
- Analog and digital switching
- GaN power amplifier gate switching
- Remote Radio Units (RRU)
- Active Antenna System mMIMO (AAS)
- Baseband Unit (BBU)
- Wireless communications test
Functional Block Diagram
Published: 2021-04-26
| Updated: 2022-03-11