Texas Instruments TMUX821x SPST Four-Channel Switches
Texas Instruments TMUX821x SPST Four-Channel Switches are modern high-voltage capable analog switches with latch-up immunity. Each device has four independently controllable 1:1, single-pole, single-throw (SPST) switch channels. The devices work well with single, dual, or asymmetric supplies up to a supply voltage of 100V (max.). The TMUX821x devices provide consistent analog parametric performance across the entire supply voltage range. The TMUX821x family supports bidirectional digital and analog signals on the drain (Dx) and source (Sx) pins.
All logic inputs support logic levels of 1.8V, 3.3V, and 5V and can be connected as high as 48V, allowing system flexibility with control signal voltage. Fail-safe logic circuitry allows voltages on the logic pins to be applied before the supply pin, protecting the device from potential damage.
The Texas Instruments TMUX821x prevents undesirable high current events between parasitic structures within the device by providing latch-up immunity. Typically, a latch-up condition continues until the power supply rails are turned off, which can lead to device failure. Because of this latch-up immunity feature, this family of multiplexers can be used in harsh environments.
Features
- High supply voltage capable
- ±10V to ±50V dual supply
- 10V to 100V single supply
- Asymmetric dual supply operation
- Consistent parametrics across supply voltages
- Latch-up immune
- 200mA high continuous current
- –110dB low crosstalk
- 10pA low input leakage
- 0.05Ω low on-resistance flatness
- 5Ω low on-resistance
- 12pF low capacitance
- Removes the need for additional logic rail (VL)
- 1.8V logic capable
- Fail-safe logic up to 48V independent of supply
- Integrated pull-down resistor on logic pins
- Bidirectional signal path
- –40°C to 125°C wide operating temperature TA
- Industry-standard TSSOP and smaller WQFN packages
Applications
- High voltage bidirectional switching
- Analog and digital signal switching
- Semiconductor test equipment
- LCD test equipment
- Battery test equipment
- Data acquisition systems (DAQ)
- Digital multi-meter (DMM)
- Factory automation and control
- Programmable logic controllers (PLC)
- Analog input modules
Functional Block Diagram
Related Development Tool
Texas Instruments TMUX-24PW-EVM Analog Switch Evaluation Module
The module allows for the quick prototyping and DC characterization of TI's line of TMUX products.